ADV471KP66E

Digital To Analog Converters Overview

The ADV471KP66E is an obsolete CMOS monolithic RAM-DAC designed for Personal System/2 compatible color graphics. It features a 256 × 18 color palette RAM and triple 6-bit video D/A converters, operating at a maximum clock rate of 66 MHz. The device generates RS-343A and RS-170 compatible video signals with sync on all three channels. Key specifications include a +5 V supply voltage, 800 mW typical power dissipation, and integral/differential nonlinearity errors guaranteed at ±1/4 LSB. It utilizes a 44-pin PLCC package and supports external voltage or current references.

Digital To Analog Converters Feature Summary

• Triple 6-bit D/A converters with 256 × 18 color palette RAM
• 66 MHz pipelined operation capability
• RS-343A/RS-170 compatible outputs without external buffering
• Programmable pedestal (0 or 7.5 IRE) and overlay registers

Digital To Analog Converters Applications

• High resolution color graphics systems
• CAE/CAD/CAM applications
• Image processing instrumentation
• Desktop publishing equipment

Digital To Analog Converters Procurement Notes

This component is classified as obsolete by the manufacturer. Verification of availability requires checking distributor archives for remaining stock or secondary market sources. Functional replacement should be considered due to end-of-life status. Ensure ESD precautions are observed during handling, as the device is sensitive to electrostatic discharge.

Digital To Analog Converters Selection Notes

Select the ADV471KP66E specifically for legacy PS/2 compatible graphics architectures requiring 6-bit color depth and 66 MHz pixel clock rates. The KP suffix indicates a 0°C to +70°C temperature range and PLCC packaging. Verify that the system design accommodates the required 75 Ω load termination and external reference circuitry for optimal linearity performance.

Digital To Analog Converters Part Context

The ADV471 is part of the ADV478/ADV471 family of RAM-DACs from Analog Devices. It is software and pin-compatible with the ADV478, which offers 8-bit resolution and a 256 × 24 RAM. The ADV471 provides a cost-effective solution for 6-bit color applications, sharing the same MPU interface and functional block diagram structure as its 8-bit counterpart.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-for-pin replacements may require adapter solutions or redesign. Consult manufacturer archives for potential modern equivalents supporting similar video DAC functionalities.