Nonblocking Video Crosspoint Switch with On-Screen Display Insertion B

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Nonblocking Video Crosspoint Switch with On-Screen Display Insertion B

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19-2113; 8/01
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
MAX4356 highly integrated video crosspoint switch matrix with input output buffers On-Screen Display (OSD) Insertion. This device operates from dual supplies from single supply. Digital logic supplied from independent single +2.7V +5.5V supply. Individual outputs switched between input video signal source information through internal, dedicated fast (40ns switching times) located before output buffer. inputs outputs buffered, with outputs able drive standard reverse-terminated video loads. switch matrix configuration output buffer gain programmed SPI/QSPITM-compatible, threewire serial interface initialized with single update signal. unique serial interface operates modes facilitating both fast updates initialization. power-up, outputs initialized disabled state avoid output conflicts large-array configurations. Superior flexibility, high integration, space-saving packaging make this nonblocking switch matrix ideal routing video signals security video-ondemand systems. MAX4356 available 128-pin TQFP package specified over extended -40°C 85°C temperature range.
Features
Nonblocking Matrix with Buffered Inputs Outputs Operates from ±3V, ±5V, Supplies Individually Programmable Output Buffer Gain +1V/V +2V/V) High-Impedance Output Disable Wired-OR Connections Fast-Switching (40ns) Insertion 0.1dB Gain Flatness 14MHz -62dB Crosstalk, -110dB Isolation 6MHz 0.02%/0.12° Differential Gain/Differential Phase Error 195mW Power Consumption (0.76mW Point)
MAX4356
Ordering Information
PART MAX4356ECD TEMP. RANGE -40°C +85°C PIN-PACKAGE TQFP
Applications
Security Systems Video Routing Video-on-Demand Systems
Configuration appears data sheet.
Functional Diagram
OSDFILL1 OSDFILL0 OSDFILL15
Typical Operating Circuit
MAX4356 ENABLE/DISABLE OUT0
CAMERAS
OUT0 MONITOR IN15 MAX4356 OSDFILL0 OUT1 MONITOR
SWITCH MATRIX
OUT1
OUT2
IN15 RESET POWER-ON RESET THERMAL SHUTDOWN
OUT15
DISABLE OUTPUTS
AGND DGND DOUT
GENERATOR
OSDKEY0 OSDFILL1 OSDKEY1 OUT15 MONITOR
DECODE LOGIC SCLK UPDATE SERIAL INTERFACE LATCHES MATRIX REGISTER BITS UPDATE REGISTER BITS
OSDFILL15 OSDKEY15
AOUT
A0-A3 MODE +1V/V +2V/V
OSDKEY0 OSDKEY15 OSDKEY1
QSPI trademarks Motorola, Inc. Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ABSOLUTE MAXIMUM RATINGS
Analog Supply Voltage (VCC VEE) .+11V Digital Supply Voltage (VDD DGND) .+6V Analog Supplies Analog Ground (VCC AGND) (AGND VEE) .+6V Analog Ground Digital Ground .-0.3V +0.3V IN_, OSDFILL_ Voltage Range. (VCC 0.3V) (VEE 0.3V) OUT_ Short-Circuit Duration AGND, VCC, .Indefinite SCLK, UPDATE, MODE, DIN, DOUT, RESET, AOUT, OSDKEY_.(VDD 0.3V) (DGND 0.3V) Current into Analog Input (IN_, OSDFILL_) .±50mA Current into Analog Output (OUT_).±75mA Continuous Power Dissipation +70°C) 128-Pin TQFP (derate 25mW/°C above +70°C).2W Operating Temperature Range .-40°C +85°C Junction Temperature .+150°C Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10s) +300°C
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES
(VCC +5V, -5V, +5V, AGND DGND VIN_= VOSDFILL_ AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Operating Supply Voltage Range Logic Supply Voltage Range SYMBOL DGND (VEE 2.5V) VIN_ (VCC 2.5V), +1V/V, CONDITIONS Guaranteed PSRR test 10.5 UNITS
0.97
0.995
(VEE 2.5V) VIN_ (VCC 2.5V), +1V/V,
0.99
0.999
Gain (Note
(VEE 3.75V) VIN_ (VCC 3.75V), +2V/V,
1.92
1.996
2.08
(VEE 3.75V) VIN_ (VCC 3.75V) +2V/V,
1.94
2.008
2.06
(VEE VIN_ (VCC 1.2V), +1V/V, Gain Matching (Channel Channel)
0.95
0.994
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES (continued)
(VCC +5V, -5V, +5V, AGND DGND VIN_= VOSDFILL_ AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Temperature Coefficient Gain SYMBOL TCAV +1V/V Input Voltage Range VIN_ +2V/V VOUT Input Bias Current Input Resistance Output Offset Voltage Output Short-Circuit Current Enabled Output Impedance Output Leakage Current, Disable Mode Power-Supply Rejection Ratio RIN_ VOFFSET ZOUT PSRR (VEE VIN_ (VCC 1.2V) +1V/V +2V/V Sinking sourcing, (VEE VIN_ (VCC 1.2V) (VEE VOUT_ (VCC 1.2V) 4.5V (VCC VEE) 10.5V Outputs enabled, +25°C Outputs enabled Outputs disabled Quiescent Supply Current Outputs enabled, +25°C Outputs enabled Outputs disabled 3.75 0.004 CONDITIONS 3.75 UNITS ppm/°C
MAX4356
Output Voltage Range
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES
(VCC +3V, -3V, +3V, AGND DGND VIN_ VOSDFILL_ AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Operating Supply Voltage Range Logic Supply Voltage Range SYMBOL DGND (VEE VIN_ (VCC 1.2V), +1V/V, (VEE VIN_ (VCC 1.2V), +1V/V, Gain (Note (VEE VIN_ (VCC 2.1V), +2V/V, (VEE VIN_ (VCC 2.1V) +2V/V, Gain Matching (Channel Channel) Temperature Coefficient Gain TCAV +1V/V Input Voltage Range VIN_ +2V/V Output Voltage Range VOUT Input Bias Current Input Resistance Output Offset Voltage VOFFSET (VEE VIN_ (VCC 1.2V) +1V/V +2V/V 1.92 1.985 2.08 CONDITIONS Guaranteed PSRR test 0.94 0.983 10.5 UNITS
0.96
0.993
1.94
2.000
2.06
ppm/°C
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES (continued)
(VCC +3V, -3V, +3V, AGND DGND VIN_ VOSDFILL_ AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Output Short-Circuit Current Enabled Output Impedance Output Leakage Current, Disable Mode Power-Supply Rejection Ratio SYMBOL ZOUT PSRR Quiescent Supply Current CONDITIONS Sinking sourcing, (VEE VIN_ (VCC 1.2V) (VEE VOUT_ (VCC 1.2V) 4.5V (VCC VEE) 10.5V Outputs enabled Outputs disabled Outputs enabled Outputs disabled 0.004 UNITS
MAX4356
ELECTRICAL CHARACTERISTICS-SINGLE SUPPLY
(VCC +5V, +5V, AGND DGND VIN_ VOSDFILL_ +1.75V, +1V/V, AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Operating Supply Voltage Range Logic-Supply Voltage Range SYMBOL DGND (VEE (VCC 2.5V), +1V/V, (VEE (VCC 1.2V), +1V/V, TCAV Input Voltage Range +1V/V CONDITIONS Guaranteed PSRR test 0.94 0.94 0.995 0.995 ppm/° UNITS
Gain (Note
Gain Matching (Channel Channel) Temperature Coefficient Gain
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ELECTRICAL CHARACTERISTICS-SINGLE SUPPLY (continued)
(VCC +5V, +5V, AGND DGND VIN_ VOSDFILL_ +1.75V, +1V/V, AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.)
PARAMETER Output Voltage Range Input Bias Current Input Resistance Output Offset Voltage Output Short-Circuit Current Enabled Output Impedance Output Leakage Current, Disable Mode Power-Supply Rejection Ratio SYMBOL CONDITIONS +1V/V, VOUT +1V/V, VOFFSET ZOUT PSRR 1.2V +1V/V Sinking sourcing, (VEE VIN- (VCC 1.2V) (VEE VOUT- (VCC 1.2V) 4.5V (VCC VEE) 5.5V Outputs enabled, +25°C Outputs disabled Quiescent Supply Current Outputs enabled, +25°C Outputs disabled 0.004 UNITS
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
LOGIC-LEVEL CHARACTERISTICS
(VCC VEE) +4.5V +10.5V, +2.7V +5.5V, AGND DGND VIN_ VOSDFILL_ AGND, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note
PARAMETER Input Voltage High Level Input Voltage Level Input Current High Level Input Current Level Output Voltage High Level Output Voltage Level Output Current High Level Output Current Level SYMBOL +5.0V +2.7V +5.0V +2.7V Excluding RESET RESET Excluding RESET RESET -300 0.01 0.01 -235 CONDITIONS UNITS
ISOURCE 1mA, ISOURCE 1mA, ISINK 1mA, ISINK 1mA, +5V, +4.9V +3V, +2.7V +5V, +0.1V +3V, +0.3V
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES
(VCC +5V, -5V, +5V, AGND DGND VIN_ VOSDFILL_ AGND, +25°C, unless otherwise noted.)
PARAMETER Small-Signal -3dB Bandwidth Medium-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth Small-Signal 0.1dB Bandwidth Medium-Signal 0.1dB Bandwidth Large-Signal 0.1dB Bandwidth SYMBOL BWSS BWMS BWLS BW0.1dB-SS BW0.1dB-MS BW0.1dB-LS CONDITIONS VOUT 20mVp-p VOUT_ 200mVp-p VOUT_ 2Vp-p VOUT_ 20mVp-p VOUT_ 200mVp-p VOUT_ 2Vp-p VOUT_ step, +1V/V Slew Rate VOUT_= step, +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V V/µs UNITS
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES (continued)
(VCC +5V, -5V, +5V, AGND DGND VIN_ VOSDFILL_ AGND, +1V/V, +25°C, unless otherwise noted.)
PARAMETER Settling Time Switching Transient (Glitch) (Note Power-Supply Rejection Ratio Differential Gain Error (Note Differential Phase Error (Note Crosstalk, Hostile Off-Isolation, Input-to-Output Input Noise Voltage Density Input Capacitance Disabled Output Capacitance Capacitive Load Output Peaking Output Impedance ZOUT 6MHz Output enabled Output disabled Amplifier disable mode SYMBOL 0.1% CONDITIONS VOUT_ step +1V/V +2V/V 100kHz 1MHz 6MHz 6MHz 6MHz +1V/V +2V/V 0.002 0.02 0.02 0.12 -110 UNITS degrees µVRMS
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES
(VCC +3V, -3V, +3V, AGND DGND VIN_= VOSDFILL_ AGND, +1V/V, +25°C, unless otherwise noted.)
PARAMETER Small-Signal -3dB Bandwidth Medium-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth Small-Signal 0.1dB Bandwidth Medium-Signal 0.1dB Bandwidth Large-Signal 0.1dB Bandwidth SYMBOL BWSS BWMS BWLS BW0.1dB-SS BW0.1dB-MS BW0.1dB-LS VOUT_ 20mVp-p VOUT_ 200mVp-p VOUT_ 2Vp-p VOUT_ 20mVp-p VOUT_ 200mVp-p VOUT_ 2Vp-p CONDITIONS +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V +1V/V +2V/V UNITS
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ELECTRICAL CHARACTERISTICS-DUAL SUPPLIES (continued)
(VCC +3V, -3V, +3V, AGND DGND VIN_= VOSDFILL_ AGND, +1V/V, +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS VOUT_ step +1V/V VOUT_ step +2V/V Settling Time Switching Transient (Glitch) (Note Power-Supply Rejection Ratio Differential Gain Error (Note Differential Phase Error (Note Crosstalk, Hostile Off-Isolation, Input Output Input Noise Voltage Density Input Capacitance Disabled Output Capacitance Capacitive Load Output Peaking Output Impedance
ZOUT
UNITS
Slew Rate
V/µs +1V/V +2V/V 0.02 0.15 0.05 -112 degrees µVRMS
0.1%
step +1V/V +2V/V 100kHz 1MHz 6MHz 6MHz
CIN_
6MHz Amplifier disable mode
6MHz
Output enabled Output disabled
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
ELECTRICAL CHARACTERISTICS-SINGLE SUPPLY
(VCC +5V, +5V, AGND DGND VIN_ VOSDFILL_ 1.75V, AGND, +1V/V, +25°C, unless otherwise noted.)
PARAMETER Small-Signal -3dB Bandwidth Medium-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth Small-Signal 0.1dB Bandwidth Medium-Signal 0.1dB Bandwidth Large-Signal 0.1dB Bandwidth Slew Rate Settling Time Switching Transient (Glitch) Power-Supply Rejection Ratio Differential Gain Error (Note Differential Phase Error (Note Crosstalk, Hostile Off-Isolation, Input-toOutput Input Noise Voltage Density Input Capacitance Disabled Output Capacitance Capacitive Load Output Peaking Output Impedance ZOUT 6MHz Output enabled Output disabled 100kHz 1MHz 6MHz 6MHz CIN_ Amplifier disable mode 6MHz SYMBOL BWSS BWMS BWLS BW0.1dB-SS BW0.1dB-MS BW0.1dB-LS 0.1% CONDITIONS VOUT_ 20mVp-p VOUT_ 200mVp-p VOUT_ 1.5Vp-p VOUT_ 20mVp-p VOUT_ 200mVp-p VOUT_ 1.5Vp-p VOUT_ step, +1V/V VOUT_ step 0.05 -110 UNITS V/µs degrees µVRMS
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
SWITCHING CHARACTERISTICS
((VCC VEE) +4.5V +10.5V, +2.7V +5.5V, DGND AGND VIN_ VOSDFILL_ dual supplies, VIN_ VOSDFILL_ +1.75V single supply, AGND, 100pF, +1V/V, TMIN TMAX, unless otherwise noted. Typical values +25°C.
PARAMETER Delay: UPDATE Video Delay: UPDATE AOUT Delay: OSDKEY_ Output Delay: SCLK DOUT Valid Delay: Output Disable Delay: Output Enable Setup: SCLK Setup: SCLK Hold Time: SCLK Minimum High Time: SCLK Minimum Time: SCLK Minimum Time: UPDATE Setup Time: UPDATE SCLK Hold Time: SCLK UPDATE Setup Time: MODE SCLK Hold Time: MODE SCLK Minimum Time: RESET Delay: RESET SYMBOL tPdUdVo tPdUdAo tPdOkVo/ tPdOfVo tPdDo tPdHOe tPdLOe tSuCe tSuDi tHdDi tMnHCk tMnLCk tMnLUd tSuHUd tHdHUd tSuMd tHdMd tMnLRst tPdRst pulldown AGND, 0.5V step Rising edge UPDATE falling edge SCLK Falling edge SCLK falling edge UPDATE Minimum time from clock edge MODE with valid data clocking Minimum time from clock edge MODE with valid data clocking CONDITIONS 0.5V step MODE time AOUT after UPDATE VOUT 0.5V step UNITS
Logic state change DOUT active SCLK edge VOUT 0.5V, pulldown AGND Output disabled, pulldown AGND, 0.5V
Note Associated output voltage determined multiplying input voltage specified gain (AV) adding output offset voltage. Gain specified OSDFILL_ signal paths. Note Logic-level characteristics apply following pins: DIN, DOUT, SCLK, UPDATE, RESET, A3-A0, MODE, AOUT, OSDKEY_. Note Switching transient settling time guaranteed settling time (tS) specification. Switching transient result updating switch matrix. Note Input test signal: 3.58MHz sine wave amplitude 40IRE superimposed linear ramp 100IRE). unit video-signal amplitude developed International Radio Engineers: 140IRE 1.0V. Note devices 100% production tested +25°C. Specifications over temperature limits guaranteed design.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Symbol Definitions
SYMBOL TYPE Signal Signal Signal Signal Signal Signal Signal Signal Signal Signal Property Property Property Property Property Property Property Property Property DESCRIPTION Address Valid Flag (AOUT) Clock Enable (CE) Clock (SCLK) Serial Data (DIN) Serial Data Output (DOUT) MODE Output enable Reset Input (RESET) UPDATE Video (OUT) High- Low-to-High transition Hold Low- High-to-Low transition Minimum Maximum Propagation delay Setup Transition Width
Naming Conventions
parameters with time units given designation, with appropriate subscript modifiers. Propagation delays clocked signals from active edge clock. Propagation delay level-sensitive signals from input output point transition. Setup hold times measured from point signal transition point clocking signal transition. Setup time refers signal that must stable before active clock edge, even signal latched clocked itself. Hold time refers signal that must stable during after active clock edge, even signal latched clocked. Propagation delays unobservable internal signals modified setup hold designations applied observable signals.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
DATA CONTROL TIMING tSuCe SCLK tMnHCk tMnLCk DOUT tPdDo UPDATE tMnLUd tHdUd tWTrVo OUT_ AOUT tPdUdAo tPdHOeVo OUTPUT ENABLE tPdLOeVo tPdRstVo tMnlRst Hi-Z tPdUdVo Hi-Z tSuUd tSuDi tHdDi tHdCe TIMING PARAMETER DEFINITIONS NAME tHdDi tMnHCk tMnLCk tMnLUd tSuHUd Valid tHdHUd Valid tPdDiDo tMnMd tMxTr tMnLRst tPdRstVo DESCRIPTION Hold Time: Clock Data High Time: Time: Time: Update Setup Time: UPDATE with UPDATE High Setup Time: UPDATE with UPDATE Hold Time: UPDATE with UPDATE high Hold Time: UPDATE with UPDATE Asynchronous Delay: Data Data Time: MODE Rise Time: Clk, Update Time: Reset Delay: Reset Video Output
Rst: RESET
OSD: FILL TIMING VIDEO SOURCE (SELECTED INPUT)
TIMING PARAMETER DEFINITIONS NAME DESCRIPTION tPdUdVo Delay: Update Video tPdUdAo Delay: UPDATE Aout tPdOkVo Delay: Video Output Delay: Fill Video Output tPdOfVo tPdDo Delay: Data tPdHOeVo Delay: Output Enable Video Output (High: Disable) tPdLOeVo Delay: Output Enable Video Output (Low: Enable) Setup: Clock Enable Clock tSuCe tSuDi Setup Time: Data Clock
OSDFILLi OSDKEYi OUTi tPdHOkVo
VIDEO OUTPUT (WITH SUPERIMPOSED OSD) tPdLOkVo tPdLOfVo
Figure Timing Diagram
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies
(VCC -5V, +5V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc01
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc02
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB) +2V/V +1V/V
MAX4356 toc03
NORMALIZED GAIN (dB) FREQUENCY (MHz) +1V/V +2V/V
NORMALIZED GAIN (dB) +2V/V +1V/V
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc04
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc05
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB) +2V/V +1V/V
MAX4356 toc06
NORMALIZED GAIN (dB) FREQUENCY (MHz) +2V/V +1V/V
NORMALIZED GAIN (dB) +1V/V +2V/V
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
LARGE-SIGNAL GAIN FLATNESS FREQUENCY
MAX4356 toc07
LARGE-SIGNAL GAIN FLATNESS FREQUENCY
MAX4356 toc08
LARGE-SIGNAL FREQUENCY RESPONSE +1V/V)
NORMALIZED GAIN (dB) 30pF 15pF 45pF
MAX4356 toc09
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 FREQUENCY (MHz) +2V/V +1V/V
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 +2V/V +1V/V
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -5V, +5V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
LARGE-SIGNAL FREQUENCY RESPONSE +2V/V)
NORMALIZED GAIN (dB) FREQUENCY (MHz) 1000 FREQUENCY (MHz) 1000 30pF 15pF 45pF
MAX4356 toc10
MEDIUM-SIGNAL FREQUENCY RESPONSE +1V/V)
MAX4356 toc11
MEDIUM-SIGNAL FREQUENCY RESPONSE +2V/V)
NORMALIZED GAIN (dB) FREQUENCY (MHz) 1000 15pF 30pF 45pF
MAX4356 toc12
45pF
NORMALIZED GAIN (dB)
30pF
15pF
CROSSTALK FREQUENCY
MAX4356 toc13
CROSSTALK FREQUENCY
MAX4356 toc14
DISTORTION FREQUENCY
DISTORTION dBc) -100 HARMONIC HARMONIC +1V/V
MAX4356 toc15
+1V/V CROSSTALK (dB) -100 FREQUENCY (MHz)
+2V/V CROSSTALK (dB) -100
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
DISTORTION FREQUENCY
DISTORTION dBc) -100 FREQUENCY (MHz) -0.1 HARMONIC HARMONIC +2V/V
MAX4356 toc16
ENABLED-OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc17
DISABLED-OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc18
1000
100k OUTPUT IMPEDANCE
OUTPUT IMPEDANCE
FREQUENCY (MHz)
1000
100k
FREQUENCY (Hz)
100M
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -5V, +5V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
ISOLATION FREQUENCY
MAX4356 toc19
POWER-SUPPLY REJECTION RATIO FREQUENCY
MAX4356 toc20
INPUT VOLTAGE NOISE FREQUENCY
MAX4356 toc21
ISOLATION (dB)
1000
PSRR (dB)
-100
VOLTAGE NOISE (nV/
-110 -120 100k FREQUENCY (Hz) 100M 100k FREQUENCY (Hz) 100M 100k FREQUENCY (Hz)
LARGE-SIGNAL PULSE RESPONSE +1V/V)
LARGE-SIGNAL PULSE RESPONSE +2V/V)
MAX4356 toc22
MAX4356 toc23
MEDIUM-SIGNAL PULSE RESPONSE +1V/V)
MAX4356 toc24
INPUT 1V/div
INPUT 0.5V/div
INPUT 100mV/div
OUTPUT 0.5V/div
OUTPUT 0.5V/div
OUTPUT 50mV/div
25ns/div
25ns/div
25ns/div
MEDIUM-SIGNAL PULSE RESPONSE +2V/V)
MAX4356 toc25
SWITCHING TIME +1V/V)
MAX4356 toc26
SWITCHING TIME +2V/V)
MAX4356 toc27
INPUT 50mV/div
VUPDATE 5V/div
VUPDATE 5V/div
OUTPUT 50mV/div
VOUT 00mV/div
VOUT 1V/div
25ns/div
20ns/div
20ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -5V, +5V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
SWITCHING TRANSIENT (GLITCH) +1V/V) SWITCHING TRANSIENT (GLITCH) +2V/V)
OFFSET VOLTAGE DISTRIBUTION
MAX4356 toc30
MAX4356 toc28
MAX4356 toc29
VUPDATE 5V/div
VUPDATE 5V/div
VOUT 25mV/div
VOUT 25mV/div
20ns/div
20ns/div
OFFSET VOLTAGE (mV)
DIFFERENTIAL GAIN PHASE 150)
MAX4356 toc31
DIFFERENTIAL GAIN PHASE
DIFF GAIN 0.004 0.002 0.000 -0.002 -0.004
MAX4356 toc32
LARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, +1V/V)
MAX4356 toc33
DIFF GAIN
0.08 0.04 0.02 0.00 -0.02
INPUT 1V/div
0.15 0.10 0.05 0.00 -0.05 0.03 0.02 0.01 0.00 -0.01 DIFF PHASE DIFF PHASE
OUTPUT 0.5/Vdiv
25ns/div
LARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, +2V/V)
MAX4356 toc34
MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, +1V/V)
MAX4356 toc35
MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, +2V/V)
MAX4356 toc36
INPUT 0.5V/div
INPUT 100mV/div
INPUT 50mV/div
OUTPUT 0.5/Vdiv
OUTPUT 50mV/div
OUTPUT 50mV/div
25ns/div
25ns/div
25ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -5V, +5V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
GAIN TEMPERATURE
MAX4356 toc37
RESET DELAY CRESET
100m RESET DELAY 100µ 100n
MAX4356 toc38
0.20 0.15 NORMALIZED GAIN (dB) 0.10 0.05 -0.05 -0.10 -0.15 -0.20 +1V/V +2V/V
100p
100n 100µ CRESET
TEMPERATURE (°C)
SWITCHING TRANSIENT (100IRE LEVEL SWITCH) +2V/V)
MAX4356 toc39
SWITCHING 3.58MHz SIGNAL +2V/V)
MAX4356 toc40
VOSDKEY0 5V/div
VOSDKEY0 5V/div
100IRE
VOUT0 500mV/div 0IRE
VOUT0 500mV/div
50ns/div
50ns/div
SUPPLY CURRENT TEMPERATURE
MAX4358 toc41
SUPPLY CURRENT (mA) TEMPERATURE (°C)
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies
(VCC -3V, +3V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc42
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc43
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB) +2V/V +1V/V
MAX4356 toc44
NORMALIZED GAIN (dB) FREQUENCY (MHz) +1V/V +2V/V
NORMALIZED GAIN (dB) +2V/V +1V/V
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc45
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc46
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB) +2V/V +1V/V
MAX4356 toc47
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
+2V/V
+1V/V
+1V/V
+2V/V
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
LARGE-SIGNAL GAIN FLATNESS
MAX4356 toc48
LARGE-SIGNAL GAIN FLATNESS
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5
MAX4356 toc49
LARGE-SIGNAL FREQUENCY RESPONSE +1V/V)
NORMALIZED GAIN (dB) 30pF 15pF 45pF
MAX4356 toc50
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7
+1V/V +2V/V
+1V/V
+2V/V FREQUENCY (MHz) 1000
-0.6 -0.7 FREQUENCY (MHz) 1000
FREQUENCY (MHz)
1000
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -3V, +3V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
LARGE-SIGNAL FREQUENCY RESPONSE +2V/V)
MAX4356 toc51
MEDIUM-SIGNAL FREQUENCY RESPONSE +1V/V)
MAX4356 toc52
MEDIUM-SIGNAL FREQUENCY RESPONSE +2V/V)
NORMALIZED GAIN (dB) 15pF 30pF 45pF
MAX4356 toc53
NORMALIZED GAIN (dB) FREQUENCY (MHz) 30pF 15pF 45pF
NORMALIZED GAIN (dB) 15pF 30pF 45pF
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
CROSSTALK FREQUENCY
MAX4356 toc54
CROSSTALK FREQUENCY
MAX4356 toc55
DISTORTION FREQUENCY
DISTORTION (dBc) -100 HARMONIC HARMONIC 1V/V
MAX4356 toc56
CROSSTALK (dB)
CROSSTALK (dB)
+1V/V
2V/V
FREQUENCY (Hz)
100M
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
DISTORTION FREQUENCY
MAX4356 toc57
ENABLED OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc58
DISABLED OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc59
CROSSTALK (dBc)
1000
100k OUTPUT IMPEDANCE
OUTPUT IMPEDANCE 100M
-100
HARMONIC
HARMONIC
FREQUENCY (MHz) 1000 FREQUENCY (Hz)
FREQUENCY (MHz)
1000
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -3V, +3V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO FREQUENCY
MAX4356 toc60
MAX4356 toc61
ISOLATION FREQUENCY
ISOLATION (dB)
PSRR (dB)
INPUT VOLTAGE NOISE FREQUENCY
MAX4356 toc62
1000
-100
VOLTAGE NOISE (nV/
-110 -120 100k FREQUENCY (Hz) 100M
100k FREQUENCY (Hz) 100M 100k FREQUENCY (Hz)
LARGE-SIGNAL PULSE RESPONSE +1V/V)
MAX4356 toc63
LARGE-SIGNAL PULSE RESPONSE +2V/V)
MAX4356 toc64
MEDIUM-SIGNAL PULSE RESPONSE +1V/V)
MAX4356 toc65
INPUT 1V/div
INPUT 0.5V/div
INPUT 100mV/div
OUTPUT 0.5V/div
OUTPUT 0.5V/div
OUTPUT 50mV/div
25ns/div MEDIUM-SIGNAL PULSE RESPONSE +2V/V)
25ns/div SWITCHING TIME +1V/V)
25ns/div SWITCHING TIME +2V/V)
MAX4356 toc66
MAX4356 toc67
MAX4356 toc68
INPUT 50mV/div
VUPDATE 3V/div
VUPDATE 3V/div
OUTPUT 50mV/div
VOUT 500mV/div
VOUT 1V/div
25ns/div
20ns/div
20ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -3V, +3V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
SWITCHING TRANSIENT (GLITCH) +1V/V) MAX4356 toc69 SWITCHING TRANSIENT (GLITCH) +2V/V) MAX4356 toc70 OFFSET VOLTAGE DISTRIBUTION
MAX4356 toc71
VUPDATE 3V/div
VUPDATE 3V/div
VOUT 25mV/div
VOUT 25mV/div
20ns/div
20ns/div
OFFSET VOLTAGE (mV)
DIFFERENTIAL GAIN PHASE 150)
0.20 0.15 0.10 0.05 -0.05
MAX4356 toc72
DIFFERENTIAL GAIN PHASE
0.010 0.005 0.010 0.015 0.020 0.08 DIFFERENTIAL GAIN
MAX4356 toc73
LARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, +1V/V) MAX4356 toc74
DIFFERENTIAL GAIN
INPUT 1V/div
0.25 0.20 0.15 0.10 0.05 -0.05
DIFFERENTIAL PHASE
0.06 0.04 0.02
DIFFERENTIAL PHASE
OUTPUT 500mV/div
-0.02
25ns/div
LARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, 2V/V)
MAX4356 toc75
MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, 1V/V)
MAX4356 toc76
MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF, 2V/V)
MAX4356 toc77
INPUT 0.5V/div
100mV/div
INPUT 50mV/div
OUTPUT 0.5V/div
OUTPUT 50mV/div
OUTPUT 50mV/div
25ns/div
25ns/div
25ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Dual Supplies (continued)
(VCC -3V, +3V, AGND DGND VIN_ AGND, +25°C, unless otherwise noted.)
GAIN TEMPERATURE
MAX4356 toc78
RESET DELAY CRESET
100m RESET DELAY 100µ 100n
MAX4356 toc79
0.20 0.15 NORMALIZED GAIN (dB) 0.10 0.05 -0.05 -0.10 +1V/V -0.15 -0.20 +2V/V
100p
100n 100µ CRESET
TEMPERATURE (°C)
SWITCHING TRANSIENT (100IRE LEVEL SWITCH)
MAX4356 toc80
SWITCHING 3.58MHz SIGNAL
MAX4356 toc81
+2V/V
2V/V
VOSDKEY0 3V/div 100IRE VOUT0 500mV/div 0IRE 50ns/div
VOSDKEY0 3V/div
VOUT0 500mV/div
50ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Single Supply
(VCC +5V, AGND DGND VIN_ AGND, +1V/V, +25°C, unless otherwise noted.)
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc82
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc83
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB)
MAX4356 toc84
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
LARGE-SIGNAL FREQUENCY RESPONSE
MAX4356 toc85
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc86
SMALL-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB)
MAX4356 toc87
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
100k
FREQUENCY (Hz)
100M
100k
FREQUENCY (Hz)
100M
100k
FREQUENCY (Hz)
100M
LARGE-SIGNAL GAIN FLATNESS
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 FREQUENCY (MHz) 1000
MAX4356 toc88
LARGE-SIGNAL GAIN FLATNESS
MAX4356 toc89
LARGE-SIGNAL FREQUENCY RESPONSE
NORMALIZED GAIN (dB) 15pF 30pF 45pF
MAX4356 toc90
NORMALIZED GAIN (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7
FREQUENCY (MHz)
1000
FREQUENCY (MHz)
1000
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Single Supply (continued)
(VCC +5V, AGND DGND VIN_ AGND, +1V/V, +25°C, unless otherwise noted.)
MEDIUM-SIGNAL FREQUENCY RESPONSE
MAX4356 toc91
CROSSTALK FREQUENCY
MAX4356 toc92
DISTORTION FREQUENCY
DISTORTION -100 HARMONIC HARMONIC
MAX4356 toc93
NORMALIZED GAIN (dB) 45pF 30pF
CROSSTALK (dB)
100k FREQUENCY (Hz) 100M 15pF
-100 100k 100M FREQUENCY (MHz)
FREQUENCY (MHz)
ENABLED-OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc94
DISABLED-OUTPUT IMPEDANCE FREQUENCY
MAX4356 toc95
ISOLATION FREQUENCY
ISOLATION (dB) -100
MAX4356 toc96
100k OUTPUT IMPEDANCE
OUTPUT IMPEDANCE
-110 FREQUENCY (MHz) 1000 100k FREQUENCY (Hz) 100M -120 100k FREQUENCY (Hz) 100M
POWER-SUPPLY REJECTION RATIO FREQUENCY
MAX4356 toc97
INPUT VOLTAGE NOISE FREQUENCY
MAX4356 toc98
LARGE-SIGNAL PULSE RESPONSE
MAX4356 toc99
1000
PSRR (dB)
VOLTAGE NOISE (nV/
INPUT 1V/div
OUTPUT 0.5V/div
100k FREQUENCY (Hz) 100M
100k 25ns/div FREQUENCY (Hz)
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Single Supply (continued)
(VCC +5V, AGND DGND VIN_ AGND, +1V/V, +25°C, unless otherwise noted.)
MEDIUM-SIGNAL PULSE RESPONSE
MAX4356 toc100
SWITCHING TIME
MAX4356 toc101
INPUT 100mV/div
VUPDATE 5V/div
OUTPUT 50mV/div
VOUT 500mV/div
25ns/div
20ns/div
SWITCHING TRANSIENT (GLITCH)
MAX4356 toc102
OFFSET VOLTAGE HISTOGRAM
MAX4356 toc103
VUPDATE 5V/div
VOUT 25mV/div
20ns/div
OFFSET VOLTAGE (mV)
DIFFERENTIAL GAIN PHASE 150)
MAX4356 toc104
DIFFERENTIAL GAIN PHASE
DIFF GAIN 0.20 0.10 0.00 0.10 -0.20 0.06 0.04 0.02 0.00 -0.02 DIFF PHASE
MAX4356 toc105
DIFF GAIN
0.30 0.20 0.10 0.00 -0.10
-0.1 DIFF PHASE
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Typical Operating Characteristics-Single Supply (continued)
(VCC +5V, AGND DGND VIN_ AGND, +1V/V, +25°C, unless otherwise noted.)
LARGE-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF) MEDIUM-SIGNAL PULSE RESPONSE WITH CAPACITIVE LOAD 30pF)
MAX4356 toc107
MAX4356 toc106
INPUT 1V/div
INPUT 100mV/div
OUTPUT 0.5V/div
OUTPUT 50mV/div
25ns/div
25ns/div
GAIN TEMPERATURE
MAX4356 toc108
RESET DELAY CRESET
MAX4356 toc109
0.20 0.15 NORMALIZED GAIN (dB) 0.10 0.05 -0.05 -0.10 -0.15 -0.20
100m RESET DELAY 100µ 100n
100p
100n 100µ CRESET
TEMPERATURE (°C)
SWITCHING TRANSIENT (100IRE LEVEL SWITCH)
MAX4356 toc110
SWITCHING 3.58MHz SIGNAL
MAX4356 toc111
VOSDKEY0 5V/div
100IRE
VOSDKEY0 5V/div
0IRE
VOUT0 250mV/div
VOUT0 250mV/div
50ns/div
50ns/div
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Description
1-4, 30-38, 121, 123, 125, 100, 101, 102, 120, 122, 124, NAME N.C. FUNCTION Connection. internally connected. Connect AGND.
IN0-IN15
Buffered Analog Inputs
AGND
Analog Ground
A3-A0
Address Programming Inputs. Connect DGND select address individual output address mode. Table Positive Analog Supply. Bypass each with 0.1µF capacitor AGND. Connect single 10µF capacitor from AGND. Serial Data Output. complete matrix mode, data clocked through 96-bit Matrix Control Shift register. individual output address mode, data passes directly DOUT. Digital Ground Address Recognition Output. AOUT drives after successful chip address recognition. Serial Clock Input Clock Enable Input. Drive enable serial data interface. Serial Interface Mode Select Input. Drive high complete matrix mode (mode drive individual output address mode (mode Asynchronous Reset Input/Output. Drive RESET initiate hardware reset. matrix settings power-up defaults analog outputs disabled. Additional power-on reset delay connecting small capacitor from RESET DGND. Update Input. Drive UPDATE transfer data from Mode registers matrix switch. Serial Data Input. Data clocked falling edge SCLK. Digital Logic Supply. Bypass with 0.1µF capacitor DGND. Digital Control Input. Control fast insertion multiplexer routing signal output buffers. logic high routes programmed analog input signal output buffer. logic routes dedicated OSDFILL_ input corresponding output buffer.
DOUT DGND AOUT SCLK MODE
RESET UPDATE OSDKEY0- OSDKEY15
49-64
104-119
OUT0- OUT15
Buffered Analog Outputs. Gain individually programmable +1V/V +2V/V through serial interface. Outputs individually disabled (high impedance). power-up assertion RESET, outputs disabled. Negative Analog Supply. Bypass each with 0.1µF capacitor AGND. Connect single 10µF capacitor from AGND. Dedicated Analog Signal Buffered Inputs. each output buffer amplifier OSDFILL, input signal routed output buffer amplifier when corresponding OSDKEY low.
OSDFILL0- OSDFILL15
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
Functional Diagram
OSDFILL1 OSDFILL0 OSDFILL15
MAX4356
MAX4356 ENABLE/DISABLE OUT0
SWITCH MATRIX
OUT1
OUT2
IN15 RESET POWER-ON RESET THERMAL SHUTDOWN
OUT15
DISABLE OUTPUTS SCLK UPDATE
AGND DGND DOUT
DECODE LOGIC SERIAL INTERFACE LATCHES MATRIX REGISTER BITS UPDATE REGISTER BITS
AOUT
A0-A3 MODE +1V/V +2V/V
OSDKEY0 OSDKEY15 OSDKEY1
Detailed Description
MAX4356 highly integrated nonblocking video crosspoint switch matrix. inputs outputs buffered, with outputs able drive standard reverse-terminated video loads. 3-wire interface programs switch matrix initializes with single update signal. unique serial interface operates modes: Complete Matrix Mode (Mode Individual Output Address Mode (Mode Functional Diagram, signal path MAX4356 from inputs (IN0-IN15), through switching matrix, buffered output amplifiers, presented output terminals (OUT0-OUT15). other functional blocks serial interface control logic. Each functional blocks described detail below.
mized maximize bandwidth each gain selection. Each output individually enabled disabled through serial control word. When disabled, output high impedance, presenting typically load, output capacitance, allowing multiple outputs connected together building large arrays. power-up asynchronous RESET), outputs initialized disabled state avoid output conflicts large array configurations. programming operation MAX4356 output referred. Outputs configured individually connect analog inputs, programmed desired gain +1V/V +2V/V), disabled high-impedance state.
Analog Inputs
MAX4356 offers analog input channels. Each input buffered before crosspoint switch matrix, allowing input cross-connect outputs. input buffers voltage feedback amplifiers with high input impedance low-input bias current. This allows very simple input clamp circuits.
Analog Outputs
MAX4356 outputs high-speed voltage feedback amplifiers capable driving back-terminated) loads. gain, +1V/V +2V/V, selectable through programming serial control word. Amplifier compensation automatically opti-
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Table Operation Truth Table
UPDATE SCLK DOUT MODE AOUT RESET OPERATION/COMMENTS change logic. Data clocked negative edge SCLK into 96-bit Complete Matrix Mode register. DOUT supplies original data SCLK pulses later. Data serial 96-bit Complete Matrix Mode register transferred into parallel latches that control switching matrix. Data routed Individual Output Address Mode shift register. also connected directly DOUT that devices serial addressed parallel. 4-bit chip address compared D10. equal, remaining bits Individual Output Address Mode register decoded, allowing reprogramming single output. AOUT signals successful individual matrix update. Asynchronous reset. outputs disabled. Other logic remains unchanged.
Di-96
OSDFILL OSDKEY Inputs
Intended on-screen display insertion, OSDFILL inputs buffered analog signal inputs that routed exclusively dedicated output buffer through fast Mux. signal presented output buffer selected from programmed analog input signal (IN_) dedicated OSDFILL input signal. Each Insertion controlled through corresponding OSDKEY digital input provide fast pixel switching.
Digital Interface
digital interface consists following pins: DIN, DOUT, SCLK, AOUT, UPDATE, A3-A0, MODE, RESET. serial data input; DOUT serial data output. SCLK serial data clock that clocks data into Data Input registers (Figure Data loaded each falling edge SCLK. DOUT data shifted 96-bit Complete Matrix Mode (Mode passes directly DOUT when Individual Output Address Mode (Mode falling edge UPDATE latches data programs matrix. When using individual output address mode, address recognition output AOUT drives when control word bits match address programming inputs (A3-A0) UPDATE low. Table operation truth table.
Switch Matrix
MAX4356 individual T-switches making switch matrix switching matrix 100% nonblocking, which means that input routed output. switch matrix programming output-referred. Each output connected analog inputs. input routed outputs with signal degradation.
Programming Matrix
MAX4356 offers programming modes: individual output address mode complete matrix mode.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Table 16-Bit Serial Control Word Assignments (Mode Individual Output Address Mode)
(LSB) NAME Input Address Input Address Input Address Input Address input channel select address Gain Select output buffer, gain +1V/V, gain +2V/V Enable output, disable, enable output buffer address FUNCTION input channel select address
Table Chip Address Programming 16-Bit Control Word (Mode Individual Output Address Mode)
ADDRESS (MSB) (LSB) ADDRESS CHIP ADDRESS (HEX) CHIP ADDRESS (DECIMAL)
Gain
(MSB)
Output Enable Output Address Output Address Output Address Output Address Address Address Address Address
output buffer address selected chip address
selected chip address Don't care Don't care
output gain-set bit, input address bits (Tables through Figure mode data passes directly DOUT through data routing gate (Figure this configuration, 16-bit control word simultaneously sent chips array addresses. Complete Matrix Mode (MODE Drive MODE logic high select mode single 96-bit control word consisting six-bit control words programs outputs. 96-bit control word's first 6-bit control word (MSBs) programs output last 6-bit control word (LSBs) programs output (Table Figures Data clocked into 96-bit Complete Matrix Mode register latched falling edge UPDATE, outputs immediately updated. Initialization String Complete Matrix Mode (Mode convenient program matrix power-up. large matrix consisting many MAX4356 devices, devices programmed sending single-bit
These distinct programming modes selected toggling single MODE high low. Both modes operate with same physical board layout. This flexibility allows initial programming daisychaining sending long data word while still being able address immediately update individual outputs matrix. Individual Output Address Mode (MODE Drive MODE logic select mode Individual outputs programmed through serial interface with single 16-bit control word. control word consists don't care MSBs, chip address bits, output address bits, output enable/disable bit,
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
16-BIT INDIVIDUAL OUTPUT ADDRESS MODE: FIRST BITS DON'T CARE BITS, LAST BITS CLOCKED INTO WHEN MODE CREATE ADDRESS WORD; ADDRESS A3-A0 COMPARED DIN13-DIN10 WHEN UPDATE LOW; EQUAL, ADDRESSED OUTPUT UPDATED. UPDATE MODE tSuMd tHdMd
SCLK
GAIN +1V/V INPUT ADDRESS (MSB) INPUT ADDRESS (LSB) DON'T CARE DON'T CARE ADDRESS ADDRESS ADDRESS ADDRESS OUTPUT ENABLED INPUT ADDRESS INPUT ADDRESS OUTPUT ADDRESS OUTPUT ADDRESS OUTPUT ADDRESS OUTPUT ADDRESS
ADDRESS
OUTPUT ADDRESS
OUTPUT ENABLED, +1V/V, CONNECTED INPUT
EXAMPLE 16-BIT SERIAL CONTROL WORD OUTPUT CONTROL INDIVIDUAL OUTPUT ADDRESS MODE
Figure Mode Individual Output Address Mode Timing Programming Example
Table Chip Address A3-A0 Programming
ADDRESS CHIP CHIP ADDRESS ADDRESS (DECIMAL) (HEX)
Table Output Selection Programming
OUTPUT ADDRESS (MSB) (LSB) SELECTED OUTPUT
DGND DGND DGND DGND DGND DGND DGND DGND
DGND DGND DGND DGND DGND DGND DGND DGND
DGND DGND DGND DGND DGND DGND DGND DGND
DGND DGND DGND DGND DGND DGND DGND DGND
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
SCLK MODE 16-BIT INDIVIDUAL OUTPUT ADDRESS MODE REGISTER SCLK MODE MODE DATA ROUTING GATE MODE OUTPUT ADDRESS DECODE MODE A0-A3 CHIP ADDRESS
DOUT
96-BIT COMPLETE MATRIX MODE REGISTER
UPDATE
AOUT
96-BIT PARALLEL LATCH SWITCH DECODE SWITCH MATRIX OUTPUT ENABLE
Figure Serial Interface Block Diagram
Table Input Selection Programming
INPUT ADDRESS (MSB) (LSB) SELECTED INPUT
Table 6-Bit Serial Control Word Assignments (Mode Complete Matrix Mode)
(MSB) (LSB) NAME Output Enable Gain Input Address Input Address Input Address Input Address input channel select address FUNCTION Enable output, disable, enable Gain Select output buffer, gain +1V/V, gain +2V/V. input channel select address
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
tMnLCk SCLK tSuDi tHdDi tMnHCk
tSuHUd UPDATE tPdDo
tMnLUd
DOUT
SCLK EXAMPLE 6-BIT SERIAL CONTROL WORD OUTPUT CONTROL NEXT CONTROL WORD
INPUT ADDRESS (MSB)
CROSSPOINT 6-BIT CONTROL WORD
OUTPUT ENABLED, +1V/V, CONNECTED INPUT
Figure 6-Bit Control Word Programming Example (Mode Complete Matrix Mode Programming)
UPDATE
MODE
6-BIT CONTROL WORD
OUT2
OUT1
OUT0
MOST-SIGNIFICANT OUTPUT BUFFER CONTROL BITS SHIFTED FIRST, I.E., OUT15, THEN OUT14, ETC. LAST BITS SHIFTED PRIOR UPDATE NEGATIVE EDGE PROGRAM OUT0.
Figure Mode Complete Matrix Mode Programming
INPUT ADDRESS (LSB)
INPUT ADDRESS
INPUT ADDRESS
OUTPUT ENABLED
GAIN +1V/V
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
stream equal bits, where number MAX4356 devices bus. first 96-bit data word programs last MAX4356 line (see Matrix Programming under Applications Information).
Thermal Shutdown
MAX4356 features thermal shutdown protection with temperature hysteresis. When temperature exceeds +150°C, MAX4356 pulls RESET low, disabling output buffers. When cools 20°C, RESET pulldown deasserted, output buffers remain disabled until device programmed again.
MAX4356
On-Screen-Display Fast
MAX4356 features asynchronous dedicated each output buffer amplifier. Fast 40ns switching times enable pixel switching on-screen-display (OSD) information such text other picture-in-picture signals (Figure OSDFILL_ inputs buffered analog inputs connected each dedicated Mux. Switching between programmed input from crosspoint switch matrix OSDFILL_ accomplished driving dedicated OSDKEY_ digital input. logic OSDKEYi routes analog signal OSDFILLi OUTi output buffer. OSDKEY_ control does affect crosspoint switch matrix programming output buffer enable/disable gain-set programming.
Applications Information
Building Large Video Switching Systems
MAX4356 easily used create larger switching matrices. number required implement matrix function number input channels, number outputs required, whether array needs nonblocking not. most straightforward technique implementing nonblocking matrices arrange building blocks grid. inputs connect each vertical bank devices parallel with other banks. outputs each building block vertical column connect together wired-OR configuration. Figure shows 128-input, 32-output, nonblocking array using MAX4356 crosspoint devices. wired-OR connection outputs shown diagram possible because outputs devices placed disabled high-impedance output state. This disable state output buffers designed maximum impedance frequency while maintaining output capacitance. These characteristics minimize adverse loading effects from disabled outputs. Larger arrays constructed extending this connection technique more devices.
RESET
MAX4356 features asynchronous bidirectional RESET with internal pullup resistor When RESET pulled low, either internal circuitry, driven externally, analog output buffers latched into high-impedance state. After RESET released, output buffers remain disabled. outputs enabled sending 96-bit data word 16-bit individual output address word. reset initiated from three sources. RESET driven external circuitry initiate reset, RESET pulled internal circuitry during power-up (power-on reset) thermal shutdown. Since driving RESET only clears output buffer enable matrix control latches, RESET used disable outputs simultaneously. data been loaded into 96-bit complete matrix mode register, single UPDATE restores previous matrix control settings.
Driving Capacitive Load
Figure shows implementation requiring many outputs wired together. This creates situation where each output buffer sees only normal load impedance, also disabled impedance other outputs. This impedance resistive capacitive component. resistive components reduce total effective load driving output. Total capacitance capacitance disabled outputs function size matrix. Also, size matrix increases, length board traces increases, adding more capacitance. output buffers have been designed drive more than 30pF capacitance while still maintaining good response. Depending size array, capacitance seen output exceed this amount. There several ways improve situation. first more building-block
Power-On-Reset
power-on reset ensures output buffers disabled state when power initially applied. voltage comparator generates power-on-reset. When voltage less than 2.5V, poweron-reset comparator pulls RESET through internal circuitry. digital supply voltage ramps crossing 2.5V, MAX4356 holds RESET 40ns (typ). Connecting small capacitor from RESET DGND extends power-on-reset delay. Power-on Reset RESET Capacitance Typical Operating Characteristics.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
MAX4356 MAX4356 MAX4356
MAX4356
(0-15)
(64-79)
(16-31)
MAX4356
MAX4356
(80-95)
MAX4356
MAX4356
(32-47)
MAX4356
MAX4356
(96-111)
MAX4356
MAX4356
(48-63)
MAX4356
MAX4356
(112-127)
MAX4356
MAX4356
OUTPUTS (0-15)
OUTPUTS (16-32)
Figure Nonblocking Matrix Using Crosspoint Devices
crosspoint devices reduce number outputs that need wired together (see Figure Figure additional devices placed second bank multiplex signals. This reduces number wired-OR connections. Another solution small resistor series with output before capacitive load limit excessive ringing oscillations. Figure shows graph Optimal Isolation Resistor Capacitive Load. lowpass filter created from series resistor parasitic capacitance ground. single affect performance video frequencies, very large system there many R-Cs cascaded series. cumulative effect slight rolling high frequencies causing "softening" picture. There solutions achieve higher performance. design board traces associated with outputs such that they exhibit some inductance. routing traces repeating configuration, traces that nearest each other will exhibit mutual inductance increasing total inductance. This series inductance causes amplitude response increase peak higher frequencies, offsetting rolloff from parasitic capacitance. Another solution smallvalue inductor output.
(0-15)
MAX4356
(16-31)
MAX4356
MAX4356
(32-47)
MAX4356 MAX4356
OUTPUTS (0-15)
(48-63)
MAX4356
Figure Nonblocking Matrix with Reduced Capacitive Loading
On-Screen Display Insertion
MAX4356 facilitates insertion on-screen graphics characters using built-in fast multiplexer associated with each outputs (Functional Diagram). This switches 40ns, much
less than width single pixel. Access this fast through dedicated OSDFILL analog inputs dedicated OSDKEY input controls. timing externally controlled applied OSDKEY inputs (Figure Pulling OSDKEYi switches signal OSDFILLi input OUTi output. When OSDKEY signal logic high, signal switched output. This switching action repeated pixel-by-pixel basis each scan line. this synchronized video signal, including arbitrary graphics, inserted screen (Figure
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
OPTIMAL ISOLATION RESISTANCE CAPACITIVE LOAD
CAPACITIVE LOAD (pF) SYNC15 SYNC0 OSDFILL0 OSDKEY0 SYNC1 OSDFILL1 OSDKEY1 OSDFILL15 OSDKEY15 MEMORY OUT15 MONITOR SYNC15 CAMERAS COMPUTER CONTROL SYNC0 OUT0 MONITOR SYNC1 IN15 MAX4356 OUT1 MONITOR
Figure Optimal Isolation Resistor Capacitive Load
This technique inserting display information improvement over traditionally been done. Other techniques require external fast buffer each output.
ISOLATION RESISTANCE
Figure Improved Implementation On-Screen Display
Crosstalk Signal Board Routing Issues
Improper signal routing causes performance problems such crosstalk. MAX4356 typical crosstalk rejection -62dB 6MHz. board layout degrades crosstalk rejection 20dB more. achieve best crosstalk performance: Place ground isolation between long critical signal board trace runs. These traces shield potential interfering signals. Crosstalk degraded parallel traces well directly above below adjoining board layers. Maintain controlled-impedance traces. Design many board traces possible transmission lines. This lowers impedance traces, reducing potential source crosstalk. More power will dissipated output buffer driving lower impedance. Minimize ground-current interaction using good ground plane strategy. addition crosstalk, another issue concern isolation. Isolation rejection undesirable feedthrough from input output with output disabled. MAX4356 acheives -110dB isolation 6MHz selecting pinout configuration such that inputs outputs opposite sides package. Coupling through power supply function quality location supply bypassing.
appropriate low-impedance components locate them close possible Avoid routing inputs near outputs.
Power-Supply Bypassing
MAX4356 operates from single dual supplies. single-supply operation, connect pins ground bypass power-supply pins with 0.1µF capacitor ground. dual-supply systems, bypass supply pins ground with 0.1µF capacitors.
Power Large Systems
MAX4356 been designed operate with split supplies down single supply +5V. Operating minimum supply voltages reduces power dissipation much 50%. ±5V, MAX4356 consumes 195mW (0.76mW/point).
Driving Board Interconnect Cable +1V/V +2V/V)
MAX4356 output buffers programmed either +1V/V +2V/V. +1V/V configuration typically used when driving short-length (less than 3cm), high-impedance "local" board trace. drive cable transmission line trace program gain output buffer +2V/V place resistor series with output. series termination resistor load impedance voltagedivider that divides video signal half. gain +2V/V transmit standard video signal down
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
cable. series resistor called back-match, reverse termination, series termination. This resistor reduces reflections, provides isolation, increasing output capacitive driving capability.
Single-Supply Operation with +1V/V +2V/V
MAX4356 guarantees operation with single supply gain +1V/V standard video input signals (1Vp-p). implement complete video matrix switching system capable gain +2V/V while operating with single supply, combine MAX4356 crosspoint switch with Maxim's low-cost, high-performance video amplifiers optimized single supply operation (Figure 11). MAX4450 single MAX4451 dual amps unity-gain-stable devices that combine high-speed performance with Rail-toRail® outputs. common-mode input voltage range extends beyond negative power-supply rail (ground single-supply applications). MAX4450 available ultra-small 5-pin SC70 package, while MAX4451 available space-saving 8-pin SOT23. MAX4383 quad available 14-pin TSSOP package. MAX4380/MAX4381/MAX4382 MAX4384 offer individual output high-impedance disable making these amplifiers suitable wired-OR connections.
Matrix Programming
MAX4356's unique digital interface simplifies programming multiple MAX4356 devices array. Multiple devices connected with DOUT first device connecting second device, (Figure 10). distinct programming modes, individual output address mode (MODE complete matrix mode (MODE selected toggling single MODE control high low. Both modes operate with same physical board layout. This allows initial programming daisy-chaining sending long data word while still being able address immediately update individual locations matrix. Individual Output Address Mode (Mode Individual Output Address Mode, devices connected serial configuration, with data routing gate (Figure connecting DOUT, making each device virtual node serial bus. single 16-bit control word sent devices simultaneously. Only device with corresponding chip address responds programming word, updates output. this mode, chip address through hardware strapping A3-A0. host then communicates with device sending 16-bit word consisting don't care bits, chip address bits, bits data make word exactly bytes length. data bits broken down into bits select output programmed; output enable, gain, bits select input connected that output. this method, matrix programmed output time. Complete Matrix Mode (Mode Complete Matrix Mode, devices connected daisy-chain fashion where bits sent program entire matrix, where number MAX4356 devices connected series. This long data word structured such that first last device chain last data first device chain. total length data word equal number crosspoint devices programmed series, times bits crosspoint device. This programming method most often used startup initially configure switching matrix.
Rail-to-Rail registered trademark Nippon Motorola, Ltd.
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
CHIP ADDRESS CHIP ADDRESS CHIP ADDRESS
HOST CONTROLLER
DOUT
DOUT
DOUT
NEXT DEVICE
MAX4356 SCLK MODE UPDATE
MAX4356 SCLK MODE UPDATE
MAX4356 SCLK MODE UPDATE
VIRTUAL SERIAL (MODE INDIVIDUAL OUTPUT ADDRESS MODE)
Figure Matrix Mode Programming
OUT0 OUT15 IN15 OUT1 1VP-P
2VP-P 220µF MONITOR
MAX4356
MAX4450 MAX4383
Figure Typical Single Supply Application
Chip Information
TRANSISTOR COUNT: 24,883 PROCESS: BiCMOS
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers MAX4356
Configuration
ODSFILL15 ODSFILL14 ODSFILL13 ODSFILL12 ODSFILL11 ODSFILL10 ODSFILL9 ODSFILL8 ODSFILL7 ODSFILL6 ODSFILL5 ODSFILL4 ODSFILL3 ODSFILL2 ODSFILL1 AGND AGND AGND ODSFILL0 AGND
N.C. AGND AGND AGND
N.C. N.C. N.C. N.C. AGND AGND
OUT0 OUT1 OUT2 OUT3 OUT4
AGND AGND AGND AGND IN10 AGND IN11 AGND IN12 IN13 IN14 IN15 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. AOUT OSDKEY13 OSDKEY14 OSDKEY12 OSDKEY10 OSDKEY7 DGND DOUT OSDKEY9 OSDKEY8 OSDKEY6 OSDKEY5 OSDKEY3 OSDKEY15 OSDKEY11 OSDKEY0 SCLK MODE RESET UPDATE OSDKEY4 OSDKEY2 OSDKEY1
MAX4356
OUT5 OUT6 OUT7 OUT8 OUT9
OUT10
OUT11 OUT12 OUT13 OUT14 OUT15 AGND AGND
Nonblocking Video Crosspoint Switch with On-Screen Display Insertion Buffers
Package Information
TQFP14x20x1.4mm.EPS
MAX4356
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2001 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

Nonblocking Video Crosspoint Switch with On-Screen Display Insertion B

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