ADV7122KST50

Digital To Analog Converters Overview

The ADV7122KST50 is a triple 10-bit video digital-to-analog converter (DAC) fabricated in +5 V CMOS technology. It features an 80 MHz pipelined architecture with three independent pixel input ports for red, green, and blue data. The device includes integrated composite SYNC and BLANK control signals latched on the rising clock edge. Analog outputs are high-impedance current sources compatible with RS-343A/RS-170 standards. It operates from a single +5 V supply with an external 1.23 V reference and supports a 0°C to +70°C temperature range.

Digital To Analog Converters Feature Summary

• Triple 10-bit D/A converters with 80 MHz pipelined operation
• Integrated composite SYNC and BLANK control inputs
• TTL compatible digital inputs and analog current outputs
• Monolithic +5 V CMOS construction ensuring monotonicity

Digital To Analog Converters Applications

• High Definition Television (HDTV)
• High Resolution Color Graphics Systems
• Video Signal Reconstruction
• Direct Digital Synthesis (DDS)

Digital To Analog Converters Procurement Notes

Verify the speed grade suffix '50' corresponds to the 50 MHz specification when sourcing. Confirm the ST-48 package option matches the required PCB footprint. Ensure the industrial temperature range requirement aligns with the standard 0°C to +70°C rating unless special ordering is confirmed.

Digital To Analog Converters Selection Notes

Select this model for applications requiring integrated sync blanking controls compared to the ADV7121 variant. Ensure the system clock does not exceed 50 MHz for guaranteed performance. Verify that the external reference voltage is set to 1.235 V for specified accuracy. Check that the load termination matches the 37.5 Ω requirement for RS-343A compatibility.

Digital To Analog Converters Part Context

This component belongs to the ADV7121/ADV7122 family of video DACs. The ADV7122 distinguishes itself by including SYNC and BLANK control pins, whereas the ADV7121 lacks these features. The KST50 designation indicates the 50 MHz speed bin within the TQFP package offering.

Digital To Analog Converters Replacement Considerations

The ADV7122KP50 serves as a pin-compatible alternative in the PLCC package. The ADV7122KST30 offers a lower 30 MHz speed grade in the same TQFP package. Cross-referencing with the ADV7121 requires omitting SYNC/BLANK functionality.