ADV7120KPZ30

Digital To Analog Converters Overview

The ADV7120KPZ30 is a CMOS, triple 8-bit video digital-to-analog converter (DAC) from Analog Devices. It features an 80 MHz pipelined architecture designed for high-resolution color graphics and video systems. The device integrates three independent 8-bit pixel input ports for Red, Green, and Blue data, alongside standard TTL-compatible control inputs for composite sync, blanking, and reference white. It generates analog RGB current outputs compatible with RS-343A and RS-170 standards without external buffering. Key electrical parameters include a maximum clock rate of 80 MHz, a single +5 V power supply requirement, and guaranteed monotonicity with a differential nonlinearity of ±0.5 LSB.

Digital To Analog Converters Feature Summary

• Triple 8-bit D/A converters with 80 MHz pipelined operation
• TTL-compatible digital inputs for pixel data and video controls
• RS-343A/RS-170 compatible analog current outputs
• Monolithic +5 V CMOS construction ensuring low power dissipation

Digital To Analog Converters Applications

• High resolution color graphics systems
• CAE/CAD/CAM applications
• Image processing instrumentation
• Video signal reconstruction
• Direct Digital Synthesis (DDS) and I/Q modulation

Digital To Analog Converters Procurement Notes

Verify the specific speed grade suffix in the part number against the manufacturer's ordering guide to confirm the maximum clock frequency. Ensure the package type matches the required PCB footprint, as the ADV7120 family includes DIP, PLCC, and TQFP options. Confirm that the industrial temperature range variant is requested if operation outside the standard 0°C to +70°C range is necessary.

Digital To Analog Converters Selection Notes

Select the appropriate speed grade based on the system's pixel clock requirements; the 'P' suffix indicates the 48-lead TQFP package. An external 1.23 V voltage reference is mandatory for proper operation. Designers must account for the specific output current scaling determined by the RSET resistor connected to the FS ADJUST pin. Ensure the load termination matches the desired video standard, such as doubly terminated 75 Ω cables for RS-343A compliance.

Digital To Analog Converters Part Context

The ADV7120 series consists of monolithic video DACs fabricated using +5 V CMOS technology. The product line offers multiple speed grades, including 30 MHz, 50 MHz, and 80 MHz variants, to accommodate different resolution and refresh rate needs. The device is engineered to provide high functionality with low power consumption, making it suitable for portable and desktop video applications requiring precise analog signal generation.

Digital To Analog Converters Replacement Considerations

The ADV7120KN30 serves as a functional substitute within the same family, offering identical specifications but housed in a 40-pin Plastic DIP package instead of the TQFP format.