ADV476KP100

Digital To Analog Converters Overview

The ADV476KP100 is a CMOS monolithic 256x18 color palette RAM-DAC designed for VGA and Personal System/2 graphics. It integrates a 256-entry by 18-bit color lookup table, pixel mask register, and triple 6-bit video D/A converters on a single chip. The device supports pipelined operation at 66 MHz and provides RS-343A/RS-170 compatible outputs. It operates from a +5 V supply with low power dissipation and features an asynchronous standard MPU interface for access to all internal registers.

Digital To Analog Converters Feature Summary

• Integrates a complete analog output RAM-DAC including a 256x18 color palette memory and triple 6-bit DACs.
• Supports 66 MHz pipelined operation for high-speed graphics rendering.
• Provides pin and software compatibility with legacy INMOS 171/176 devices.
• Features asynchronous access to internal registers via a standard MPU interface.

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'KP100' against official Analog Devices documentation to confirm package type (44-PLCC) and temperature grade (Commercial). Confirm obsolescence status as the base ADV476 model is listed as obsolete in public records. Ensure design-in compliance with RS-343A/RS-170 output standards if replacing legacy components.

Digital To Analog Converters Selection Notes

Select this component when a direct replacement for INMOS 171/176 is required in VGA or PS/2 graphics architectures. The 66 MHz speed and 6-bit resolution are suitable for standard color depth requirements. Consider the 44-pin PLCC package constraints for PCB layout. Verify that the +5 V CMOS logic levels match the system's microprocessor interface requirements.

Digital To Analog Converters Part Context

The ADV476 series represents a family of color palette RAM-DACs from Analog Devices. The ADV476KP100 is a specific variant within this line, distinguished by its package and speed grade. It shares architectural similarities with the ADV471 series but offers lower bandwidth specifications tailored for specific legacy graphics standards.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers include ADV471KP35, ADV471KP50, ADV471KP66, and ADV471KP80. These variants offer higher clock speeds (up to 80 MHz) while maintaining pin and software compatibility. Verify electrical parameter differences before substitution.