ADV7128 Analog Devices, ADV7128 Datasheet
ADV7128
Specifications of ADV7128
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ADV7128 Summary of contents
Page 1
... D/A converters; a standard TTL input interface; and a high impedance, analog output, current source. The ADV7128 has a 10-bit pixel input port. A single +5 V power supply, an external 1.23 V reference and pixel clock input are and all that are required to make the part operational. ...
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... ADV7128–SPECIFICATIONS Parameter K Version STATIC PERFORMANCE Resolution 10 Accuracy Integral Nonlinearity, INL Differential Nonlinearity, DNL Gray Scale Error Coding DIGITAL INPUTS Input High Voltage INH Input Low Voltage, V 0.8 INL Input Current Input Capacitance ANALOG OUTPUT Gray Scale Current Range ...
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... DATA MEASURED BETWEEN THE 10% AND 90% POINTS OF FULL-SCALE TRANSITION. 7 Figure 1. Video Input/Output Timing Typ Max Units Model 5.00 5.25 Volts ADV7128KR80 80 MHz ADV7128KR50 50 MHz +70 C ADV7128KR30 30 MHz 37.5 1.235 1.26 Volts *R = SOIC. –3– ADV7128 = 37 pF 560 . L SET Units Conditions/Comments MHz max Clock Rate ns min Data & ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADV7128 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... The required CLOCK frequency is thus 78.6 MHz. All video data and control inputs are latched into the ADV7128 on the rising edge of CLOCK, as previously described in the “Digital Inputs” section recommended that the CLOCK input to the ADV7128 be driven by a TTL buffer (e.g., 74F244). I OUT ...
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... The on-board operational amplifier stabilizes the full-scale output current against temperature and power supply variations. Analog Output The analog output of the ADV7128 is a high impedance current source. The current output is capable of directly driving a 37.5 load, such as a doubly terminated 75 ...
Page 7
... PC board layout. Figure 7 shows a recommended connection diagram for the ADV7128. The layout should be optimized for lowest noise on the ADV7128 power and ground lines. This can be achieved by shielding the digital inputs and providing good decoupling. The lead length between groups of V ...
Page 8
... For optimum performance, the analog outputs should each have a source termination resistance to ground of 75 minated close as possible to the ADV7128 minimize reflections. Additional information on PCB design is available in an applica- tion note entitled “Design and Layout of a Video Graphics Sys- tem for Reduced EMI.” ...