GENERAL DESCRIPTION

The ADV478 (ADV®) and ADV471 are pin compatible and software compatible RAM-DACs designed specifically for Personal System/2 compatible color graphics. The ADV478 has a 256 × 24 color lookup table with triple 8-bit video D/A converters. It may be configured for either 6 bits or 8 bits per color operation. The ADV471 has a 256 ×18 color lookup table with triple 6-bit video D/A converters.

FEATURES

Personal System/2* Compatible

80 MHz Pipelined Operation

Triple 8-Bit (6-Bit) D/A Converters

256 3 24(18) Color Palette RAM

15 3 24(18) Overlay Registers

RS-343A/RS-170 Compatible Outputs

Sync on All Three Channels

Programmable Pedestal (0 or 7.5 IRE)

External Voltage or Current Reference

Standard MPU Interface

+5 V CMOS Monolithic Construction

44-Pin PLCC Package

Power Dissipation: 800 mW

APPLICATIONS

High Resolution Color Graphics

CAE/CAD/CAM Applications

Image Processing

Instrumentation

Desktop Publishing