GENERAL DESCRIPTION

The AD9994 is a highly integrated CCD signal processor for digital still camera 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 up to 12-phase vertical clocking to support advanced CCDs with 4-field and 5-field readout. A Precision Timing core allows adjustment of high speed clocks with approximately 600 ps resolution at 36 MHz operation.

FEATURES

10-phase or 12-phase vertical transfer clocking

Supports 4-field and 5-field CCD readout

Correlated double sampler (CDS)

6 dB to 42 dB 10-bit variable gain amplifier (VGA)

12-bit 36 MHz A/D converter

Black level clamp with variable level control

Complete on-chip timing generator

Precision Timing core with < 600 ps resolution

On-chip 3 V horizontal and RG drivers

2-phase and 4-phase H-clock modes

Electronic and mechanical shutter support

On-chip driver for external crystal

On-chip sync generator with external sync input

64-lead LFCSP package (9 mm × 9 mm, 0.5 mm pitch)

APPLICATION

Digital still cameras