TION EVALUA AVAILA Video Amplifier with Internal Gain Filter SC70

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TION EVALUA AVAILA Video Amplifier with Internal Gain Filter SC70

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19-4904; 9/09
TION EVALUA AVAILA
Video Amplifier with Internal Gain Filter SC70
5.2V/V Internal Gain 2-Pole Reconstruction Filter Input Range Includes Ground DC-Coupled Inputs Outputs Rail-to-Rail Output 3.7mA Quiescent Current 0.4µA Shutdown Current
General Description
MAX9680 high-speed amplifier filter optimized portable video applications. specifically designed compatible with video encoders embedded application processors with 0.4VP-P video output. input common-mode range includes GND, which allows video (digital-to-analog converter) DC-coupled MAX9680. output swings within 20mV with standard back-terminated video load (150I). internal level shift circuit prevents output from saturating with input, thus preventing sync-pulse clipping common video circuits. Therefore, MAX9680 ideally suited DC-coupling video load. MAX9680 been optimized space-sensitive applications integrating internal gain setting resistors 5.2V/V) 2-pole video-DAC reconstruction filter. shutdown mode, quiescent current reduced less than 0.4FA, dramatically reducing power consumption prolonging battery life. MAX9680 available tiny 2.1mm, 6-pin, SC70 package.
MAX9680
Ordering Information
PART TEMP RANGE PINPACKAGE SC70 MARK
MAX9680AXT+T -40NC +125NC
+Denotes lead(Pb)-free/RoHS-compliant package. Tape reel.
Typical Application Circuit appears data sheet.
Applications
Mobile Phones Digital Still Cameras Digital Video Cameras
Block Diagram
Configuration
BUFFER
RSET
VIEW
RSET
MAX9680
RSET
MAX9680 ENABLE
ENABLE SHUTDOWN CONTROL
5.2V/V
SC70
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim Direct 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
Video Amplifier with Internal Gain Filter SC70 MAX9680
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VDD GND).-0.3V ENABLE GND.-0.3V -0.3V (VDD 0.3V) (ENABLE high) -0.3V (VDD 0.3V) (ENABLE low) .-0.3V +3.2V ENABLE, Q50mA .Continuous Electrostatic Discharge Human Body Model.2000V Charged Device Model .500V Thermal Limits (Note Multiple-Layer Continuous Power Dissipation +70NC) 6-Pin SC70 (derate 3.1mW/C above +70NC) .245mW 6-Pin SC70 .326.5NC/W 6-Pin SC70 BJC.115NC/W Operating Temperature Range -40NC +125NC Junction Temperature .+150NC Storage Temperature Range. -65NC +150NC Lead Temperature (soldering, 10s) .+300NC
Note Package thermal resistances were obtained using method described JEDEC specification JESD51-7, using 4-layer board. detailed information package thermal considerations, refer
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
(VDD VENABLE 2.8V, VGND 150I GND. -40NC +125NC, unless otherwise noted. Typical values +25NC.) (Note PARAMETER OFFSET LEVEL-SHIFT VOLTAGE Output Level-Shift Voltage Power-Supply Rejection Ratio INPUT VOLTAGE RANGE Input Voltage Range Input Resistance (In+) RSET Resistance RSET/RIN Ratio VOLTAGE GAIN Voltage Gain (Note FREQUENCY RESPONSE 4.5MHz Filter Response VGND 0.387V 9MHz 27MHz 54MHz Differential Gain Error Five-step modulated staircase 127.8mV step size 305.3mV peak-to-peak subcarrier amplitude, 4.43MHz Five-step modulated staircase 127.8mV step size 305.3mV peak-to-peak subcarrier amplitude, 4.43MHz 100kHz 5.5MHz, VGND 0.387V 100% white signal -0.2 -3.5 2.7V, VGND 0.445V 2.8V, VGND 0.464V 5.00 5.00 5.17 5.17 5.34 5.34 RSET 2.7V 2.8V 0.5V VRSET 0.5V VGND VGND 3150 4.214 3750 0.445 0.464 1012 4350 4.386 VOLS PSRR VGND VGND, 2.7V 3.6V FV/V SYMBOL CONDITIONS UNITS
Differential Phase Error Group Delay Variation Signal-to-Noise Ratio
degrees
Video Amplifier with Internal Gain Filter SC70
ELECTRICAL CHARACTERISTICS (continued)
(VDD VENABLE 2.8V, VGND 150I GND. -40NC +125NC, unless otherwise noted. Typical values +25NC.) (Note PARAMETER OUTPUT Positive Voltage Output Swing from Rail Negative Voltage Output Swing from Rail Positive Voltage Output Swing from Rail Negative Voltage Output Swing from Rail Output Leakage Output Short-Circuit Current POWER SUPPLY Supply Voltage Supply Current ENABLE/SHUTDOWN FUNCTION Disabled (Logic-Low Threshold) Enabled (Logic-High Threshold) Enable Time Disable Time Shutdown Current Disabled 0.45 load IOUT 0.7V -0.05V 0.7V, -0.05V, Disabled, VOUT Short SYMBOL CONDITIONS UNITS
MAX9680
Note devices 100% production tested +25NC. Specifications over temperature limits guaranteed design. Note Voltage gain (AV) two-point measurement which output voltage swing divided input voltage swing.
Typical Operating Characteristics
(VDD VENABLE 2.8V, VGND 150I GND. +25NC, unless otherwise noted.)
INPUT RESISTANCE TEMPERATURE 0.4V
MAX9680 toc01
RESISTANCE TEMPERATURE
MAX9680 toc02
RSET/RIN TEMPERATURE
MAX9680 toc03
INPUT RESISTANCE
3900 3850 RESISTANCE 3800 3750 3700 3650 3600
RSET/RIN (I/I)
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
Video Amplifier with Internal Gain Filter SC70 MAX9680
Typical Operating Characteristics (continued)
(VDD VENABLE 2.8V, VGND 150I GND. +25NC, unless otherwise noted.)
OUTPUT VOLTAGE TEMPERATURE -50mV
MAX9680 toc04 MAX9680 toc05
GAIN TEMPERATURE
TEMPERATURE (°C) OUTPUT VOLTAGE (mV)
OUTPUT VOLTAGE TEMPERATURE 700mV
MAX9680 toc06
2.90 2.85 OUTPUT VOLTAGE 2.80 2.75 2.70 2.65 2.60
GAIN (V/V)
TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT VOLTAGE LEVEL SHIFT TEMPERATURE VGND
MAX9680 toc07
QUIESCENT CURRENT TEMPERATURE VENABLE 2.8V
MAX9680 toc08
OUTPUT LEAKAGE CURRENT TEMPERATURE ENABLE GND, VOUT
MAX9680 toc09
0.200 OUTPUT VOLTAGE LEVEL SHIFT 0.175 0.150 0.125 0.100 0.075 0.050 0.025
QUIESCENT CURRENT (mA)
OUTPUT LEAKAGE CURRENT (nA)
0.01 TEMPERATURE (°C) TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT LEAKAGE CURRENT TEMPERATURE, ENABLE
OUTPUT LEAKAGE CURRENT (nA) TEMPERATURE (°C) SHORT 0.01 SHORT
MAX9680 toc10
SHUTDOWN QUIESCENT CURRENT HYSTERESIS TEMPERATURE
MAX9680 toc11
GAIN FREQUENCY
GAIN (dB)
MAX9680 toc12
QUIESCENT CURRENT (mA)
-40°C
+125°C +25°C
1000 10,000 100,000
ENABLE VOLTAGE
FREQUENCY (kHz)
Video Amplifier with Internal Gain Filter SC70
Typical Operating Characteristics (continued)
(VDD VENABLE 2.8V, VGND 150I GND. +25NC, unless otherwise noted.)
MAX9680
TURN-ON TIME
MAX9680 toc13
TURN-OFF TIME
MAX9680 toc14
(2V/div)
(2V/div)
OUTPUT (1V/div) OUTPUT (1V/div) TIME (200ns/div) TIME (40ns/div)
OUTPUT VOLTAGE OUTPUT CURRENT
MAX9680 toc15
OUTPUT VOLTAGE OUTPUT SINKING CURRENT
MAX9680 toc16
GROUP DELAY FREQUENCY
MAX9680 toc17
OUTPUT VOLTAGE -40°C
OUTPUT VOLTAGE -40°C
+125°C +85°C +25°C
+125°C +85°C +25°C
-25°C
DELAY (ns)
-25°C
1000
10,000
100,000
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
FREQUENCY (kHz)
DIFFERENTIAL GAIN PHASE 4.43MHz
MAX9680 toc18
DIFFERENTIAL GAIN PHASE 4.43MHz
MAX9680 toc19
0.03 0.02 DIFFERENTIAL GAIN 0.01 -0.01 -0.02 -0.03
DIFFERENTIAL PHASE (deg) -0.2 -0.4 -0.6
Video Amplifier with Internal Gain Filter SC70 MAX9680
Description
NAME RSET ENABLE Input Ground Resistor Set. reference voltage current digital-to-analog converter (DAC) applied across internal RSET resistor generate reference current DAC. Output Enable. Drive high enable device. Pull disable device. Positive Power Supply. Bypass with 0.1FF capacitor. DESCRIPTION
Detailed Description
MAX9680 filters amplifies video output applications such mobile phones. MAX9680 consists resistors, input buffer, lowpass filter, output amplifier capable driving standard 150I video load ground. output amplifier provides fixed gain 5.17V/V. video current imposes reference voltage, VREF, across RSET. resulting current (VREF/RSET) reference current video current DAC. video input should directly connected output video current DAC. RIN, equivalent input resistance, 872I ground. output current video flows through create video signal voltage domain. filter bandwidth (-3dB) typically 9MHz, making device suitable standard-definition video signals from sources (e.g., broadcast DVD). Broadcast video signals channel limited: NTSC signals have 4.2MHz bandwidth, signals have 5MHz bandwidth. Video signals from player, however, channel limited; bandwidth video signals approach Nyquist limit 6.75MHz. Recommendation: ITU-R BT.601-5 specifies 13.5MHz sampling rate
standard-definition video. Therefore, maximum bandwidth signal 6.75MHz. ease filtering requirements, most modern video systems oversample times, clocking video current 27MHz. MAX9680 features 5.17V/V gain. Operating from 2.7V 3.6V supply, output amplifier able drive 2.3V signal into 150I video load ground. output typically offset 120mV above ground guarantee linear operation amplifier. MAX9680 output only sources current; loads should connected ground. Short-Circuit Protection MAX9680 Typical Application Circuit includes back-termination resistor that limits short-circuit currents external short applied video output. MAX9680 features internal output short-circuit protection prevent device damage prototyping applications where amplifier output directly shorted. Short-circuit protection activates output short circuited output current exceeds 90mA. During short-circuit protection, output MAX9680 shut 18Fs then turns 0.6Fs. short still present, MAX9680 output shuts again. Extended short circuits result pulsed output. device resumes normal operation after short removed.
Output
RSET Resistor
Input
Video Filter
Video Amplifier with Internal Gain Filter SC70
Application Information
MAX9680 input DC-coupled. When supply voltage between 2.7V 3.6V, input voltage range extends from ground 0.445V. When supply voltage between 2.8V 3.6V, input voltage range extends from ground 0.464V. typical current-output that operates from single supply usually creates composite video signal with sync very close ground. Hence, output directly connected MAX9680 input. Keep board trace short possible minimize parasitic stray capacitance prevent unintentional high-frequency attenuation.
Input Considerations
MAX9680 output must DC-coupled. AC-coupled capacitors allowed. MAX9680 connects directly video cable through series back-termination resistor. other cable should properly terminated with resistor well. Because this configuration, peak-to-peak amplitude well level signal divided two. MAX9680 output signal level-shifted sync approximately 120mV. MAX9680 operates from single-supply voltage down 2.7V, allowing low-power operation. Bypass with 0.1FF capacitor. Place external components close possible device.
Output Considerations
MAX9680
Power-Supply Bypassing Ground
Typical Application Circuit
2.8V VIDEO ENCODER BUFFER RSET RSET 5.2V/V GENERAL-PURPOSE OUTPUT ENABLE SHUTDOWN CONTROL
MAX9680
Chip Information
PROCESS: BiCMOS
Video Amplifier with Internal Gain Filter SC70 MAX9680
Package Information
latest package outline information land patterns, www.maxim-ic.com/packages. Note that "+", "#", package code indicates RoHS status only. Package drawings show different suffix character, drawing pertains package regardless RoHS status.
PACKAGE TYPE SC70 PACKAGE CODE X6SN+1 DOCUMENT 21-0077
SC70, 6L.EPS
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 2009 Maxim Integrated Products Maxim registered trademark Maxim Integrated Products, Inc.

TION EVALUA AVAILA Video Amplifier with Internal Gain Filter SC70

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