
Analog Devices
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