ADV7122KSTZ30

Digital To Analog Converters Overview

The ADV7122KSTZ30 is a CMOS, triple 10-bit video digital-to-analog converter (DAC) operating at 30 MHz. It integrates three high-speed RGB DACs with TTL-compatible inputs and high-impedance analog current outputs. The device supports RS-343A/RS-170 compatible outputs and includes composite SYNC and BLANK control signals for video synchronization. Powered by a single +5 V supply, it features an external 1.23 V reference input and guarantees monotonicity to 10 bits. Packaged in a 48-lead Thin Quad Flatpack (TQFP), it operates within a temperature range of 0°C to +70°C.

Digital To Analog Converters Feature Summary

• Triple 10-bit D/A converters with 80 MHz pipelined architecture capability (30 MHz grade)
• Integrated composite SYNC and BLANK control inputs
• TTL compatible digital inputs and RS-343A/RS-170 compatible analog outputs
• Monolithic +5 V CMOS construction ensuring low power dissipation

Digital To Analog Converters Applications

• High Definition Television (HDTV)
• High Resolution Color Graphics Systems
• CAE/CAD/CAM Applications
• Video Signal Reconstruction

Digital To Analog Converters Procurement Notes

Verify the speed grade suffix '30' corresponds to the required 30 MHz clock rate. Confirm the 'ST' package designation matches the 48-lead TQFP requirement. Ensure the 'Z' suffix indicates RoHS compliance. Cross-reference the manufacturer part number against official Analog Devices documentation to confirm availability and revision status.

Digital To Analog Converters Selection Notes

Select this component when a triple 10-bit video DAC with integrated sync controls is required. The 30 MHz speed grade suits applications with lower pixel clock rates compared to the 80 MHz variant. Ensure the design accommodates the specific RSET resistor calculations for full-scale output current adjustment and provides a stable 1.23 V external voltage reference.

Digital To Analog Converters Part Context

This part belongs to the ADV7121/ADV7122 family of video speed DACs. The ADV7122 differs from the ADV7121 by including SYNC and BLANK control pins. The K version denotes the industrial temperature range (0°C to +70°C). The ST suffix specifies the 48-lead TQFP package option available for the ADV7122 model.

Digital To Analog Converters Replacement Considerations

The ADV7122KST50 serves as a higher-speed replacement offering 50 MHz operation in the same package. For pin-compatible alternatives without sync controls, consider the ADV7121 series. Verify that any substitute maintains the 10-bit resolution and +5 V CMOS interface requirements.