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