ADV7122KPZ30

Digital To Analog Converters Overview

The ADV7122KPZ30 is a triple 10-bit video digital-to-analog converter (DAC) operating at a maximum clock rate of 30 MHz. It integrates three high-speed, matched DACs for Red, Green, and Blue channels, along with composite SYNC and BLANK control inputs. The device utilizes TTL-compatible digital inputs and provides high-impedance analog current outputs capable of driving doubly terminated 75 Ω coaxial cables. Powered by a single +5 V supply, it features an external 1.23 V reference input and is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package.

Digital To Analog Converters Feature Summary

• Triple 10-bit D/A converters with guaranteed monotonicity
• 30 MHz pipelined operation speed grade
• Integrated composite SYNC and BLANK control signals
• TTL-compatible digital inputs and RS-343A/RS-170 compatible outputs

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific speed grade suffix '30' corresponds to the required 30 MHz operational frequency. Confirm the PLCC package option matches the PCB footprint requirements. Ensure the industrial temperature range specification aligns with the system environment, as standard parts are rated for 0°C to +70°C.

Digital To Analog Converters Selection Notes

Select this component when a 30 MHz update rate is sufficient for the target resolution and refresh rate. Calculate the RSET resistor value based on the desired full-scale output current using the formula IOG = 12,082 × VREF / RSET. Ensure the design includes a stable 1.23 V reference source and proper decoupling capacitors for the COMP and VREF pins.

Digital To Analog Converters Part Context

This part belongs to the ADV7121/ADV7122 family of video DACs. The ADV7122 variant specifically includes SYNC and BLANK control pins, distinguishing it from the ADV7121. The 'KP' designation indicates the 44-pin PLCC package, while '30' denotes the 30 MHz speed bin within the broader product line that also offers 50 MHz and 80 MHz variants.

Digital To Analog Converters Replacement Considerations

For higher performance needs, consider the 50 MHz (ADV7122KP50) or 80 MHz (ADV7122KP80) versions which share the same pinout and package. For monochrome applications requiring fewer control signals, the ADV7121 series may be suitable.