ADV7120KP30

Digital To Analog Converters Overview

The ADV7120KP30 is a monolithic CMOS digital-to-analog video converter featuring three independent 8-bit DACs for RGB channels. Designed for high-resolution graphics and video systems, it supports pipelined operation at a maximum clock frequency of 30 MHz. The device accepts TTL-compatible digital inputs and provides high-impedance analog current outputs compliant with RS-343A and RS-170 standards. It operates on a single +5 V supply with an external 1.23 V reference and is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package.

Digital To Analog Converters Feature Summary

• Triple 8-bit D/A converters for Red, Green, and Blue video signals
• TTL compatible digital inputs and control signals
• RS-343A/RS-170 compatible analog current outputs
• Integrated composite sync, blank, and reference white controls

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the speed grade suffix 'P30' corresponds to the 30 MHz operational limit required by the design. Confirm the PLCC-44 package option matches the PCB footprint. Ensure the industrial temperature range specification aligns with environmental requirements, noting that standard versions cover 0°C to +70°C.

Digital To Analog Converters Selection Notes

Select this component when a 30 MHz pixel clock rate is sufficient for the target resolution. An external 1.23 V voltage reference, such as the AD589, is mandatory for proper operation. Designers must implement specific termination networks (e.g., doubly terminated 75 Ω loads) to achieve standard video levels like RS-343A or RS-170.

Digital To Analog Converters Part Context

The ADV7120 series includes variants with different speed grades: 80 MHz (KN80/KP80), 50 MHz (KN50/KP50), and 30 MHz (KN30/KP30). The 'KP' designation specifically identifies the 44-lead Plastic Leaded Chip Carrier (PLCC) package option, distinct from the DIP or TQFP packages available for other models in the family.

Digital To Analog Converters Replacement Considerations

For higher performance needs, the ADV7120KP80 offers 80 MHz operation in the same package. For lower cost or slower applications, the ADV7120KP50 provides 50 MHz capability. Pin compatibility remains consistent across these speed grades within the PLCC package.