ADV7122KST30

Digital To Analog Converters Overview

The ADV7122KST30 is a CMOS triple 10-bit video digital-to-analog converter (DAC) operating at a maximum clock rate of 30 MHz. It integrates three independent DACs for Red, Green, and Blue channels with TTL-compatible inputs. The device features high-impedance analog current outputs capable of driving doubly terminated 75 Ω coaxial cables directly. Key specifications include ±2 LSB maximum integral nonlinearity, ±1 LSB differential nonlinearity, and guaranteed monotonicity to 10 bits. It operates from a single +5 V supply with an external 1.23 V reference voltage.

Digital To Analog Converters Feature Summary

• Triple 10-bit D/A converters with 80 MHz pipelined architecture capability
• TTL compatible digital inputs and RS-343A/RS-170 compatible analog outputs
• Integrated composite SYNC and BLANK control signals for the ADV7122 variant
• 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 30 MHz operational limit required by the system design. Confirm the ST package option matches the 48-lead Thin Quad Flatpack physical footprint. Ensure the industrial temperature range specification aligns with the intended environmental operating conditions.

Digital To Analog Converters Selection Notes

Select this component when a triple-channel 10-bit resolution is required for RGB video generation. The ADV7122 includes SYNC and BLANK controls, unlike the ADV7121. Verify that the system pixel clock does not exceed the rated frequency for the specific speed grade. Ensure compatibility with standard TTL logic levels for data input interfacing.

Digital To Analog Converters Part Context

The ADV7122KST30 belongs to the ADV7121/ADV7122 family of video speed DACs. The K indicates the industrial temperature range (0°C to +70°C). The S denotes the TQFP package style, and T30 specifies the 30 MHz speed bin. This part serves as a direct replacement for other 30 MHz variants within the same series requiring the same package.

Digital To Analog Converters Replacement Considerations

The ADV7122KST50 is a verified substitute offering identical functionality with a 50 MHz speed rating in the same 48-lead TQFP package.