GENERAL DESCRIPTION

The AD9991 is a highly integrated CCD signal processor for digital still camera and camcorder applications. It includes a complete analog front end with A/D conversion, combined with a full-function programmable timing generator. The timing generator is capable of supporting both 4- and 6-phase vertical clocking. A Precision Timing core allows adjustment of high speed clocks with 800 ps resolution at 27 MHz operation.

FEATURES

6-Phase Vertical Transfer Clock Support

Correlated Double Sampler (CDS)

6 dB to 42 dB 10-Bit Variable Gain Amplifier (VGA)

10-Bit 27 MHz A/D Converter

Black Level Clamp with Variable Level Control

Complete On-Chip Timing Generator

Precision Timing Core with 800 ps Resolution

On-Chip 3 V Horizontal and RG Drivers

2-Phase and 4-Phase H-Clock Modes

Electronic and Mechanical Shutter Modes

On-Chip Driver for External Crystal

On-Chip Sync Generator with External Sync Input

56-Lead LFCSP Package

APPLICATIONS

Digital Still Cameras

Digital Video Camcorders

Industrial Imaging