ADV7120KPZ80

Digital To Analog Converters Overview

The ADV7120KPZ80 is a monolithic CMOS digital-to-analog video converter featuring three independent 8-bit video D/A converters for RGB signals. Operating at an 80 MHz pipelined clock rate, it accepts standard TTL-compatible pixel data and control inputs including composite sync, blank, and reference white. The device generates high-impedance analog current outputs compatible with RS-343A and RS-170 video standards without external buffering. It requires a single +5 V supply and an external 1.23 V reference voltage. Packaged in a 44-pin plastic leaded chip carrier (PLCC), the component ensures guaranteed monotonicity with specified integral and differential nonlinearity limits.

Digital To Analog Converters Feature Summary

• 80 MHz Pipelined Operation
• Triple 8-Bit D/A Converters
• RS-343A/RS-170 Compatible Outputs
• TTL Compatible Inputs

Digital To Analog Converters Applications

• High Resolution Color Graphics
• CAE/CAD/CAM Applications
• Image Processing
• Instrumentation
• Video Signal Reconstruction

Digital To Analog Converters Procurement Notes

Verify the specific speed grade suffix to confirm the 80 MHz operational frequency. Ensure the package option matches the required 44-pin PLCC form factor. Confirm the industrial temperature range availability if operation outside the standard 0°C to +70°C range is necessary. Cross-reference the ordering guide for any special request requirements regarding alternative speed grades or temperature ranges.

Digital To Analog Converters Selection Notes

Select this component for applications requiring high-speed RGB video conversion with low power dissipation. The 80 MHz speed grade supports resolutions up to approximately 1024x1024 at 60 Hz noninterlaced refresh rates. Ensure the design includes an external 1.23 V reference source and appropriate RSET resistor for full-scale adjustment. Verify that the system clock meets the setup and hold time requirements relative to the 80 MHz maximum clock rate.

Digital To Analog Converters Part Context

The ADV7120 series includes variants with different speed grades and packages. The KPZ80 designation indicates the 80 MHz speed grade within the Plastic Leaded Chip Carrier (PLCC) package family. Other available speeds include 50 MHz and 30 MHz. Package options encompass 40-pin DIP, 44-pin PLCC, and 48-lead TQFP. The K suffix denotes the commercial temperature range of 0°C to +70°C.

Digital To Analog Converters Replacement Considerations

ADV7120KP50

Digital To Analog Converters FAQ

How is the full-scale output current adjusted?

The full-scale output current is controlled by connecting a resistor (RSET) between the FS ADJUST pin and GND. The value of RSET determines the magnitude of the output video signal while maintaining IRE relationships.

What is the function of the ISYNC output?

The ISYNC output is a high-impedance current source used to encode composite sync information onto the green channel. It can be connected directly to the IOG output to combine sync data with the green video signal.

What are the input logic level specifications?

All digital inputs, including pixel data and control signals, are TTL compatible. The input high voltage is minimum 2 V, and the input low voltage is maximum 0.8 V.