Dual 125MHz Video Current Feedback Amplifier with Disable HA5022/

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Dual 125MHz Video Current Feedback Amplifier with Disable HA5022/

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HA5022/883
Dual 125MHz Video Current Feedback Amplifier with Disable
HA5022/883 dual version popular Intersil HA5020. features wide bandwidth high slew rate, optimized video applications gains between current feedback amplifier thus yields less bandwidth degradation high closed loop gains than voltage feedback amplifiers. differential gain phase, 0.1dB gain flatness, ability drive back terminated cables, make this amplifier ideal demanding video applications. HA5022/883 also features disable function that significantly reduces supply current while forcing output true high impedance state. This functionality allows video multiplexers implemented with single current feedback design allows user take advantage amplifier's bandwidth dependency feedback resistor. reducing bandwidth increased compensate decreases higher closed loop gains heavy output loads.
Features
This Circuit Processed Accordance MIL-STD883 Fully Conformant Under Provisions Paragraph 1.2.1. Dual Version HA-5020 Individual Output Enable/Disable Wide Unity Gain Bandwidth 125MHz Slew Rate 475V/µs Differential Gain 0.03% Differential Phase. 0.03 Deg. Supply Current (per Amplifier) .7.5mA Crosstalk Rejection 10MHz. -60dB Protection. 2000V Guaranteed Specifications Supplies
Applications
Video Multiplexers; Video Switching Routing Video Gain Block Video Distribution Amplifier/RGB Amplifier Flash Driver Current Voltage Converter Radar Imaging Systems Medical Imaging
Ordering Information
PART NUMBER HA5022MJ/883 TEMPERATURE RANGE -55oC +125oC PACKAGE Lead CerDIP
Pinout
HA5022/883 (CERDIP) VIEW
-IN1 +IN1 DIS1 VDIS2 +IN2 -IN2 OUT1 OUT2
CAUTION: These devices sensitive electrostatic discharge; follow proper Handling Procedures. http://www.intersil.com 407-727-9207 Copyright Intersil Corporation 1999
Spec Number
511107-883 File Number 3729.1
Specifications HA5022/883
Absolute Maximum Ratings
Voltage Between Differential Input Voltage Voltage Either Input Terminal VOutput Current Full Short Circuit Protected Junction Temperature +175oC Rating. 2000V Storage Temperature Range -65oC +150oC Lead Temperature (Soldering 10s) +300oC
Thermal Information
Thermal Resistance CerDIP Package 75oC/W 20oC/W Maximum Package Power Dissipation +75oC CerDIP Package 1.33W Package Power Dissipation Derating Factor above +75oC CerDIP Package 13.3mW/oC
CAUTION: Stresses above those listed "Absolute Maximum Ratings" cause permanent damage device. This stress only rating operation device these other conditions above those indicated operational sections this specification implied.
Operating Conditions
Operating Supply Voltage (±VS) ±15V Operating Temperature Range .-55oC +125oC VINCM 1/2(V+ VDISABLE
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS Device Tested VSUPPLY ±5V, RSOURCE 400, VOUT VDISABLE Unless Otherwise Specified. LIMITS PARAMETERS Input Offset Voltage SYMBOL CONDITIONS GROUP SUBGROUPS Common Mode Rejection Ratio CMRR ±2.5V 2.5V, -7.5V 7.5V, -2.5V ±2.25V 2.75V, -7.25V 7.25V, -2.75V Power Supply Rejection Ratio PSRR VSUP ±1.5V 6.5V, 3.5V, TEMPERATURE +25oC +125oC, -55oC +125oC -55oC
UNITS
+25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC -55oC
0.15
µA/V µA/V µA/V
Delta Input Offset Voltage Between Channels Non-Inverting Input (+IN) Current Current Common Mode Sensitivity
IBSP
CMSIBP
±2.5V 2.5V, -7.5V 7.5V, -2.5V ±2.25V 2.75V, -7.25V 7.25V, -2.75V
Inverting Input (-IN) Current Between Channels Inverting Input (-IN) Current
IBSN
+25oC +125oC +25oC +125oC, -55oC
IBSN
Spec Number
511107-883
Specifications HA5022/883
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS (Continued) Device Tested VSUPPLY ±5V, RSOURCE 400, VOUT VDISABLE Unless Otherwise Specified. LIMITS PARAMETERS Current Common Mode Sensitivity SYMBOL CMSIBN CONDITIONS ±2.5V 2.5V, -7.5V 7.5V, -2.5V ±2.25V 2.75V, -7.25V 7.25V, -2.75V Current Power Supply Sensitivity PSSIBN VSUP ±1.5V 6.5V, 3.5V, VSUP ±1.5V 6.5V, 3.5V, ±2.5V VOUT ±2.5V VOUT Note GROUP SUBGROUPS TEMPERATURE +125oC -55oC
UNITS µA/V µA/V µA/V
+25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125o
16.6
-2.5 -2.5 -16.6
µA/V µA/V µA/V µA/V mA/Op mA/Op mA/Op mA/Op
Current Power Supply Sensitivity
PSSIBP
Output Voltage Swing
Short Circuit Output Current
+ISC
-ISC
Output Current
+IOUT
-IOUT
Note
Quiescent Power Supply Current
+25oC +125oC, -55oC
+25oC +125oC, -55oC
Transimpedance
+AZOL1
VOUT ±2.5V VOUT ±2.25V
+25oC +125
-55oC +25oC +125oC -55oC
-AZOL1
VOUT ±2.5V VOUT ±2.25V
Spec Number
511107-883
Specifications HA5022/883
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS (Continued) Device Tested VSUPPLY ±5V, RSOURCE 400, VOUT VDISABLE Unless Otherwise Specified. LIMITS PARAMETERS Disabled Output Current SYMBOL +ILEAK CONDITIONS VOUT +2.5V Open, VDIS VOUT -2.5V Open, VDIS VDIS GROUP SUBGROUPS Minimum DISABLE Current Disable Maximum DISABLE Current Enable Disabled Power Supply Current IDIS Note Note ICCDIS Open, VDIS IEEDIS NOTES: Guaranteed from VOUT Test with 150, IOUT VOUT/150. 100, 2.5V. This minimum current which must pulled Disable order disable output. output considered disabled when -10mV VOUT +10mV. This maximum current that pulled Disable with HA5022/883 remaining enabled. HA5022/883 considered disabled when supply current decreased least 0.5mA. Open, VDIS TEMPERATURE +125oC, -55oC +25oC +125 +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC +125oC, -55oC +25oC
-1.0 -1.5
UNITS mA/Op mA/Op mA/Op
-ILEAK
Disable Input Current
ILOGIC
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS Table Intentionally Left Blank.
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS Device Characterized VSUPPLY ±5V, 681, 400, Unless Otherwise Specified. LIMITS PARAMETERS -3dB Bandwidth SYMBOL BW(+1) CONDITIONS VOUT 100mVRMS VOUT 100mVRMS 5MHz VOUT 100mVRMS 10MHz VOUT 100mVRMS 20MHz VOUT 100mVRMS NOTES TEMPERATURE +125oC, -55oC UNITS
BW(+2)
+125oC, -55oC
Gain Flatness
+125oC, -55oC
±0.045 ±0.085 ±0.65
GF10
+125oC, -55oC
GF20
+125oC, -55oC
Spec Number
511107-883
Specifications HA5022/883
TABLE ELECTRICAL PERFORMANCE CHARACTERISTICS (Continued) Device Characterized VSUPPLY ±5V, 681, 400, Unless Otherwise Specified. LIMITS PARAMETERS Slew Rate SYMBOL +SR(+1) CONDITIONS VOUT VOUT VOUT VOUT VOUT -0.5V -0.5V VOUT +0.5V +0.5V VOUT -0.5V +0.5V VOUT +0.5V -0.5V VOUT VOUT NOTES TEMPERATURE +125oC, -55oC UNITS V/µs
-SR(+1)
+125oC, -55oC
V/µs
+SR(+2) -SR(+2) Rise Fall Time Overshoot Propagation Delay
+125oC, -55oC +125oC, -55oC +125oC, -55oC +125oC, -55oC +125oC, -55oC +125oC, -55oC +125oC, -55oC
V/µs V/µs
+125oC, -55oC
NOTES: Parameters listed Table controlled design process parameters directly tested final production. These parameters characterized upon initial design release, upon design changes. These parameters guaranteed characterization based upon data from multiple production runs which reflect lot-to-lot within variation. Measured between points. 200ps input transition times. Overshoot decreases input transition times increase, especially Please refer Performance Curves. Measured between points.
TABLE ELECTRICAL TEST REQUIREMENTS MIL-STD-883 TEST REQUIREMENTS Interim Electrical Parameters (Pre Burn-In) Final Electrical Test Parameters Group Test Requirements Groups Endpoints NOTE: applies Subgroup only. SUBGROUPS (SEE TABLE (Note
Spec Number
511107-883
HA5022/883 Test Circuits Waveforms
POSITION x100 POSITION -IBIAS +IBIAS 100K HA-5177 200pF 100K (0.01%) V0.1
VOUT
470pF
NOTE: Resistors Capacitors ±10% (µF) Unless Otherwise Noted Chip Components Recommended
FIGURE TEST CIRCUIT (Applies Table
HP4195 NETWORK ANALYZER
FIGURE TEST CIRCUIT TRANSIMPEDANCE MEASUREMENTS
VOUT VOUT
FIGURE SMALL SIGNAL PULSE RESPONSE CIRCUIT
FIGURE LARGE SIGNAL PULSE RESPONSE CIRCUIT
FIGURE SMALL SIGNAL RESPONSE Vertical Scale: 100mV/Div., VOUT 100mV/Div. Horizontal Scale: 20ns/Div.
FIGURE LARGE SIGNAL RESPONSE Vertical Scale: 1V/Div., VOUT 1V/Div. Horizontal Scale: 50ns/Div.
Spec Number
511107-883
HA5022/883 Burn-In Circuit
HA5022MJ/883 CERAMIC
NOTES: (Per Socket) 10k, (Per Socket) 0.01µF (Per Socket) 0.1µF (Per Row) Minimum 1N4002 Equivalent (Per Board) 1N4002 Equivalent (Per Socket) +5.5V 0.5V -5.5V 0.5V
Spec Number
511107-883
HA5022/883 Characteristics
DIMENSIONS: mils mils 1650 2540 483µm 25.4µm METALLIZATION: Type: Metal AlCu (1%), Metal AlCu (1%) Thickness: Metal Metal WORST CASE CURRENT DENSITY: 1.62 A/cm2 35mA SUBSTRATE POTENTIAL (Powered Up): VGLASSIVATION: Type: Nitride Thickness: TRANSISTOR COUNT: PROCESS: Bipolar Dielectric Isolation
Metallization Mask Layout
HA5022/883
OUT1 -IN1
+IN1
DIS1
DIS2
+IN2
OUT2
-IN2
Spec Number
511107-883
HA5022/883 Ceramic Dual-In-Line Frit Seal Packages (CerDIP)
-A-DBASE METAL -Bbbb BASE PLANE SEATING PLANE SECTION LEAD FINISH
F16.3 MIL-STD-1835 GDIP1-T16 (D-2, CONFIGURATION
LEAD CERAMIC DUAL-IN-LINE FRIT SEAL PACKAGE INCHES SYMBOL 0.014 0.014 0.045 0.023 0.008 0.008 0.220 0.200 0.026 0.023 0.065 0.045 0.018 0.015 0.840 0.310 MILLIMETERS 0.36 0.36 1.14 0.58 0.20 0.20 5.59 5.08 0.66 0.58 1.65 1.14 0.46 0.38 21.34 7.87 NOTES Rev. 4/94
eA/2
eA/2
0.100 0.300 0.150 0.125 0.015 0.005 0.200 0.060 105o 0.015 0.030 0.010 0.0015
2.54 7.62 3.81 3.18 0.38 0.13 5.08 1.52 105o 0.38 0.76 0.25 0.038
NOTES: Index area: notch identification mark shall located adjacent shall located within shaded area shown. manufacturer's identification shall used identification mark. maximum limits lead dimensions shall measured centroid finished lead surfaces, when solder plate lead finish applied. Dimensions apply lead base metal only. Dimension applies lead plating finish thickness. Corner leads N/2, N/2+1) configured with partial lead paddle. this configuration dimension replaces dimension This dimension allows off-center lid, meniscus, glass overrun. Dimension shall measured from seating plane base plane. Measure dimension four corners. maximum number terminal positions. Dimensioning tolerancing ANSI Y14.5M 1982. Controlling dimension: INCH.
Spec Number
511107-883
HA5022
DESIGN INFORMATION
Dual 125MHz Video Current Feedback Amplifier with Disable
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
NORMALIZED GAIN (dB) FREQUENCY (MHz) VOUT 0.2VP-P 10pF
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
NORMALIZED GAIN (dB) FREQUENCY (MHz) VOUT 0.2VP-P 10pF
FIGURE NON-INVERTING FREQUENCY RESPONSE
NONINVERTING PHASE (DEGREES) INVERTING PHASE (DEGREES) +180 +135 +10, -10, VOUT 0.2VP-P 10pF FREQUENCY (MHz) -135 -180
FIGURE INVERTING FREQUENCY RESPONSE
-135 -100 -225 -270 -315 -360
-3dB BANDWIDTH (MHz)
-3dB BANDWIDTH
GAIN PEAKING 1100 1300 FEEDBACK RESISTOR 1500
FIGURE PHASE RESPONSE FUNCTION FREQUENCY
VOUT 0.2VP-P 10pF GAIN PEAKING (dB) -3dB BANDWIDTH
FIGURE BANDWIDTH GAIN PEAKING FEEDBACK RESISTANCE
-3dB BANDWIDTH (MHz)
-3dB BANDWIDTH (MHz)
-3dB BANDWIDTH GAIN PEAKING (dB)
GAIN PEAKING FEEDBACK RESISTOR 1100
GAIN PEAKING
VOUT 0.2VP-P 10pF
1000
LOAD RESISTOR
FIGURE BANDWIDTH GAIN PEAKING FEEDBACK RESISTANCE
FIGURE BANDWIDTH GAIN PEAKING LOAD RESISTANCE
GAIN PEAKING (dB)
VOUT 0.2VP-P 10pF
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
(Continued)
VOUT 0.2VP-P 10pF OVERSHOOT VOUT 0.1VP-P 10pF VSUPPLY ±5V,
-3dB BANDWIDTH (MHz)
VSUPPLY ±15V, VSUPPLY ±5V, VSUPPLY ±15V,
FEEDBACK RESISTOR
LOAD RESISTANCE
1000
FIGURE BANDWIDTH FEEDBACK RESISTANCE
FIGURE SMALL SIGNAL OVERSHOOT LOAD RESISTANCE
0.08
0.10 FREQUENCY 3.58MHz 0.08 DIFFERENTIAL PHASE (DEGREES) DIFFERENTIAL GAIN
FREQUENCY 3.58MHz
0.06
0.06
0.04
0.04
0.02 0.00 SUPPLY VOLTAGE
0.02 0.00 SUPPLY VOLTAGE
FIGURE DIFFERENTIAL GAIN SUPPLY VOLTAGE
VOUT 2.0VP-P 30pF
FIGURE DIFFERENTIAL PHASE SUPPLY VOLTAGE
REJECTION RATIO (dB)
DISTORTION (dBc)
ORDER
CMRR
NEGATIVE PSRR POSITIVE PSRR 0.01 FREQUENCY (MHz)
FREQUENCY (MHz)
0.001
FIGURE DISTORTION FREQUENCY
FIGURE REJECTION RATIOS FREQUENCY
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
PROPAGATION DELAY (ns) VOUT 1.0VP-P
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
(Continued)
RLOAD VOUT 1.0VP-P PROPAGATION DELAY (ns) +10,
TEMPERATURE (oC) +100 +125 SUPPLY VOLTAGE
FIGURE PROPAGATION DELAY TEMPERATURE
VOUT 20VP-P SLEW RATE (V/µs) TEMPERATURE (oC) +100 +125 SLEW RATE
FIGURE PROPAGATION DELAY SUPPLY VOLTAGE
+0.8 +0.6 +0.4 NORMALIZED GAIN (dB) VOUT 0.2VP-P 10pF
SLEW RATE
+0.2 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 FREQUENCY (MHz) =383
FIGURE SLEW RATE TEMPERATURE
+0.8 +0.6 NORMALIZED GAIN (dB) +0.4 +0.2 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2
FIGURE NON-INVERTING GAIN FLATNESS FREQUENCY
-INPUT NOISE CURRENT CURRENT NOISE (pA/Hz) VOLTAGE NOISE (nV/Hz) 1000
VOUT 0.2VP-P 10pF
+INPUT NOISE CURRENT
0.01
FREQUENCY (kHz)
FREQUENCY (MHz)
+INPUT NOISE VOLTAGE
FIGURE INVERTING GAIN FLATNESS FREQUENCY
FIGURE INPUT NOISE CHARACTERISTICS
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
(Continued)
(mV)
BIAS CURRENT (µA)
(oC)
+100 +120 +140
+100 +120 +140
TEMPERATURE
TEMPERATURE
FIGURE INPUT OFFSET VOLTAGE TEMPERATURE
FIGURE +INPUT BIAS CURRENT TEMPERATURE
4000
TRANSIMPEDANCE +100 +120 +140
BIAS CURRENT (µA)
3000
2000
1000
+100 +120 +140
TEMPERATURE (oC)
TEMPERATURE (oC)
FIGURE -INPUT BIAS CURRENT TEMPERATURE
+125oC REJECTION RATIO (dB) (mA) +55oC
FIGURE TRANSIMPEDANCE TEMPERATURE
-100 CMRR -PSRRN +PSRR
+25oC
+100
+150
+200
+250
SUPPLY VOLTAGE
TEMPERATURE (oC)
FIGURE SUPPLY CURRENT SUPPLY VOLTAGE
FIGURE REJECTION RATIO TEMPERATURE
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
SUPPLY CURRENT (mA)
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
(Continued)
+10V
+15V
OUTPUT SWING
+100 +120 +140
DISABLE INPUT VOLTAGE
TEMPERATURE (oC)
FIGURE SUPPLY CURRENT DISABLE INPUT VOLTAGE
FIGURE OUTPUT SWING TEMPERATURE
±15V VOUT (VP-P) (mV)
±10V
±4.5V 0.01 0.10 1.00 10.00 +100 +120 +140 LOAD RESISTANCE TEMPERATURE (oC)
FIGURE OUTPUT SWING LOAD RESISTANCE
FIGURE INPUT OFFSET VOLTAGE CHANGE BETWEEN CHANNELS TEMPERATURE
-55oC +25oC (mA)
BIAS CURRENT (µA)
+125oC
+100 +120 +140 TEMPERATURE (oC)
SUPPLY VOLTAGE
FIGURE INPUT BIAS CURRENT CHANGE BETWEEN CHANNELS TEMPERATURE
FIGURE DISABLE SUPPLY CURRENT SUPPLY VOLTAGE
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Typical Performance Curves
VOUT 2VP-P
VSUPPLY ±5V, 400, 25oC, Unless Otherwise Specified.
(Continued)
ENABLE TIME (ns) -2.5 -2.0 -1.5 -1.0 -0.5 DISABLE DISABLE ENABLE ENABLE DISABLE TIME (µs) PHASE ANGLE (DEGREES)
SEPARATION (dBc)
FREQUENCY (MHz)
OUTPUT VOLTAGE
FIGURE CHANNEL SEPARATION FREQUENCY
FIGURE ENABLE/DISABLE TIME OUTPUT VOLTAGE
FEEDTHROUGH (dB)
DISABLE 5VP-P TRANSIMPEDANCE
0.01 0.001
FREQUENCY (MHz)
0.001
0.01
FREQUENCY (MHz)
-135
FIGURE DISABLE FEEDTHROUGH FREQUENCY
TRANSIMPEDANCE 0.01 0.001
FIGURE TRANSIMPEDANCE FREQUENCY
PHASE ANGLE (DEGREES)
-135
0.001
0.01
FREQUENCY (MHz)
FIGURE TRANSIMPEDANCE FREQUENCY
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Application Information
Optimum Feedback Resistor plots inverting non-inverting frequency response, Figure Figure Typical Performance Curves section, illustrate performance HA5022 various closed loop gain configurations. Although bandwidth dependency closed loop gain isn't severe that voltage feedback amplifier, there appreciable decrease bandwidth higher gains. This decrease minimized taking advantage current feedback amplifier's unique relationship between bandwidth current feedback amplifiers require feedback resistor, even unity gain applications, conjunction with internal compensation capacitor, sets dominant pole frequency response. Thus, amplifier's bandwidth inversely proportional HA5022 design optimized 1000 gain Decreasing unity gain application decreases stability, resulting excessive peaking overshoot. higher gains amplifier more stable, decreased trade-off stability bandwidth. table below lists recommended values various gains, expected bandwidth.
GAIN (ACL) 1000 1000 BANDWIDTH (MHz)
Driving Capacitive Loads
Capacitive loads will degrade amplifier's phase margin resulting frequency response peaking possible oscillations. most cases oscillation avoided placing isolation resistor series with output shown Figure
VOUT
FIGURE PLACEMENT OUTPUT ISOLATION RESISTOR,
selection criteria isolation resistor highly dependent load, been determined good starting value.
Power Dissipation Considerations
high supply current inherent dual amplifiers, care must taken insure that maximum junction temperature (TJ, Absolute Maximum Ratings) exceeded. Figure shows maximum ambient temperature versus supply voltage available package styles. recommended that thermal calculations, which take into account output power, performed designer.
MAX. AMBIENT TEMPERATURE CERDIP
Board Layout
frequency response this amplifier depends greatly amount care taken designing board. inductance components such chip resistors chip capacitors strongly recommended. leaded components used leads must kept short especially power supply decoupling components those components connected inverting input. Attention must given decoupling power supplies. large value (10µF) tantalum electrolytic capacitor parallel with small value (0.1µF) chip capacitor works well most cases. ground plane strongly recommended control noise. Care must also taken minimize capacitance ground seen amplifier's inverting input (-IN). larger this capacitance, worse gain peaking, resulting pulse overshoot possible instability. recommended that ground plane removed under traces connected that connections kept short possible minimize capacitance from this node ground.
SUPPLY VOLTAGE
FIGURE MAXIMUM OPERATING AMBIENT TEMPERATURE SUPPLY VOLTAGE
Enable/Disable Function
When enabled amplifier functions normal current feedback amplifier with data electrical specifications table being valid applicable. When disabled amplifier output assumes true high impedance state supply current reduced significantly. circuit shown Figure simplified schematic
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
enable/disable function. large value resistors series with DISABLE makes appear current source driver. When driver pulls this current flows into driver. This current, which large 350µA when external circuit process variables their extremes, required insure that point achieves proper potential disable output. driver must have compliance capability sinking this current.
+VCC ENABLE/DISABLE INPUT QP18
actual signal switching takes place within amplifier, it's differential gain phase parameters, which 0.03% 0.03 degrees respectively, determine circuit's performance. other circuit, U1b, operates similar manner. When plus supply rail disable driven dedicated gate discussed earlier. multiplexer equivalent used select channels logic must break before make. When these conditions satisfied HA5022 often used remote video multiplexer, multiplexer extended adding more amplifier ICs.
Impedance Multiplexer
common problems surface when multiplex multiple high speed signals into impedance source such converter. first problem source impedance which tends make amplifiers oscillate causes gain errors. second problem multiplexer which supplies gain, introduces kinds distortion limits frequency response. Using amps which have enable/disable function, such HA5022, eliminates multiplexer problems because external chip needed, HA5022 drive impedance (large capacitance) loads series isolation resistor used. Referring Figure both inputs terminated their characteristic impedance; typical video applications. Since drivers usually terminated their characteristic impedance input gain 0.5, thus amplifiers, configured gain circuit gain equal one. Resistors determine amplifier gain, different gain desired should changed according equation R3/R2). sets frequency response amplifier should refer manufacturers data sheet before changing it's value. asymmetrical charge/discharge time circuit which configures break before make switch prevent both amplifiers from being active simultaneously. this design extended more channels drive logic must designed break before make. enclosed feedback loop amplifier that large open loop amplifier gain will present load with small closed loop output impedance while keeping amplifier stable values load capacitance. circuit shown Figure tested full range capacitor values with oscillations being observed; thus, problem been solved. frequency gain characteristics circuit those amplifier independent multiplexing action; thus, problem been solved. multiplexer transition time approximately 15µs with component values shown.
FIGURE SIMPLIFIED SCHEMATIC ENABLE/DISABLE FUNCTION
When DISABLE driven with dedicated gate. maximum level output voltage gate, 0.4V, enough compliance insure that amplifier will always disabled even though will turn gate will sink enough current keep point proper voltage. When greater than volts DISABLE should driven with open collector device that breakdown rating greater than Referring Figure seen that will pull-up resistor +VCC DISABLE left open. those cases where enable/disable function required circuits some circuits permanently enabled letting DISABLE float. driver used enable/disable level, sure that driver does sink more than 20µA when DISABLE high level. gates, especially CMOS versions, violate this criteria permissible control enable/disable function with TTL.
Channel Video Multiplexer
Referring amplifier Figure terminates cable characteristic impedance back terminates cable characteristic impedance. amplifier gain configuration yield overall network gain when driving double terminated cable. value changed different network gain desired. holds disable ground thus inhibiting amplifier until switch, thrown position position switch pulls disable plus supply rail thereby enabling amplifier. Since
HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
VIDEO INPUT
VIDEO OUTPUT LOAD
2000 2000
VIDEO INPUT
NOTES: HA5022 resistors break before make ground plane
0.1µF
10µF
0.1µF
10µF
FIGURE CHANNEL HIGH IMPEDANCE MULTIPLEXER
INPUT INPUT 1N4148 2000 0.047µF
0.01µF
OUTPUT
CHANNEL SWITCH
0.01µF 2000 INHIBIT 100K 0.047µF
NOTES: HA5022 CD4011
1N4148
FIGURE IMPEDANCE MULTIPLEXER
Specifications HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Electrical Specifications
+5V, -5V, 400, 10pF, Unless Otherwise Specified (NOTE TEST LEVEL HA5022I TEMPERATURE UNITS
PARAMETER INPUT CHARACTERISTICS Input Offset Voltage (VIO)
+25oC Full Full Full +25oC Full +25oC Full Full +25oC Full +25oC Full +25oC Full +25oC, +85oC -40oC +25oC, +85oC -40oC +25oC Full +25oC Full +25oC +25oC +25oC
±2.5
25.0
0.15
µV/oC µA/V µA/V µA/V µA/V µA/V µA/V µA/V µA/V nV/Hz pA/Hz pA/Hz
Delta Between Channels Average Input Offset Voltage Drift Common Mode Rejection Ratio (Note
Power Supply Rejection Ratio (Note
Input Common Mode Range (Note Non-Inverting Input (+IN) Current
Common Mode Rejection (Note IBCMR
Power Supply Rejection (Note
Inverting Input (-IN) Current
Delta BIAS Current Between Channels
Common Mode Rejection (Note
Power Supply Rejection (Note
Input Noise Voltage 1kHz) +Input Noise Current 1kHz) -Input Noise Current 1kHz)
Specifications HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Electrical Specifications
+5V, -5V, 400, 10pF, Unless Otherwise Specified (Continued) (NOTE TEST LEVEL HA5022I TEMPERATURE UNITS
PARAMETER TRANSFER CHARACTERISTICS Transimpedance (Note
+25oC Full +25oC Full +25oC Full
0.85
Open Loop Voltage Gain 400, VOUT ±2.5V
Open Loop Voltage Gain 100, VOUT ±2.5V
OUTPUT CHARACTERISTICS Output Voltage Swing (Note Output Current (Note Output Current (Short Circuit, Note Output Current (Disabled, Notes Output Disable Time (Note Output Enable Time (Note Output Capacitance (Disabled, Notes POWER SUPPLY CHARACTERISTICS Supply Voltage Range Quiescent Supply Current +25oC Full mA/Op mA/Op +25oC Full Full Full Full +25oC +25oC +25oC ±2.5 ±2.5 ±16.6 ±3.0 ±3.0 ±20.0
Supply Current, Disabled (Note
Full
Disable Input Current (Note Minimum Current Disable (Note Maximum Current Enable (Note CHARACTERISTICS Slew Rate (Note Full Power Bandwidth (Note Rise Time (Note
Full Full Full
+25oC +25oC +25oC
V/µs
Specifications HA5022
DESIGN INFORMATION (Continued)
information contained this section been developed through characterization Intersil Corporation application design information only. guarantee implied.
Electrical Specifications
+5V, -5V, 400, 10pF, Unless Otherwise Specified (Continued) (NOTE TEST LEVEL HA5022I TEMPERATURE +25oC +25oC +25oC +25oC +25oC +25oC UNITS
PARAMETER Fall Time (Note Propagation Delay (Note Overshoot -3dB Bandwidth (Note Settling Time Output Step Settling Time 0.25%, Output Step CHARACTERISTICS 681) Slew Rate (Note Full Power Bandwidth (Note Rise Time (Note Fall Time (Note Propagation Delay (Note Overshoot -3dB Bandwidth (Note Settling Time Output Step Settling Time 0.25%, Output Step Gain Flatness 5MHz 20MHz CHARACTERISTICS +10, 383) Slew Rate (Note Full Power Bandwidth (Note Rise Time (Note Fall Time (Note Propagation Delay (Note Overshoot -3dB Bandwidth (Note Settling Time Output Step Settling Time 0.1%, Output Step
+25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC
0.02 0.07
V/µs
+25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC +25oC
V/µs
Specifications HA5022
Electrical Specifications
+5V, -5V, 400, 10pF, Unless Otherwise Specified (Continued) (NOTE TEST LEVEL HA5022I TEMPERATURE UNITS
PARAMETER VIDEO CHARACTERISTICS Differential Gain (Notes Differential Phase (Notes NOTES:
+25oC +25oC
0.03 0.03
Degrees
Absolute maximum ratings limiting values, applied individually, beyond which serviceability circuit impaired. Functional operation under these conditions necessarily implied. Output protected short circuits ground. Brief short circuits ground will degrade reliability, however, continuous (100% duty cycle) output current should exceed 15mA maximum reliability. ±2.5V. -40oC Product tested ±2.25V because short test duration does allow self heating. ±3.5V ±6.5V. Disable 100, 2.5V. This minimum current which must pulled Disable order disable output. output considered disabled when -10mV VOUT +10mV. This maximum current that pulled Disable with HA5024 remaining enabled. HA5024 considered disabled when supply current decreased least 0.5mA. VOUT switches from +2V, from -2V. Specification from points. FPBW Slew Rate PEAK PEAK
100, VOUT Measured from points rise/fall times; from points input output propagation delay. 400, VOUT 100mV. Production Tested; Guaranteed Limit Typical based characterization; Design Typical information only. ±2.5V, VOUT VOUT ±2.5V, +2V, Disable Measured from point Disable VOUT +2V, Disable +5V. Measured from point Disable VOUT Force VOUT from ±2.5V, 50ns. Measured with VM700A video tester using NTC-7 composite VITS. Maximum power dissipation, including output load, must designed maintain junction temperature below +175oC die, below +150oC plastic packages. Applications Information section safe operating area information. VOUT 2.5V. -40oC Product tested VOUT ±2.25V because short test duration does allow self heating. Protection human body model tested MIL-STD-883, Method 3015.7.
Intersil semiconductor products manufactured, assembled tested under ISO9000 quality systems certification.
Intersil products sold description only. Intersil Corporation reserves right make changes circuit design and/or specifications time without notice. Accordingly, reader cautioned verify that data sheets current before placing orders. Information furnished Intersil believed accurate reliable. However, responsibility assumed Intersil subsidiaries use; infringements patents other rights third parties which result from use. license granted implication otherwise under patent patent rights Intersil subsidiaries.
information regarding Intersil Corporation products, site http://www.intersil.com

Dual 125MHz Video Current Feedback Amplifier with Disable HA5022/

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