GENERAL DESCRIPTION

The AD9920A is a highly integrated charge-coupled device (CCD) signal processor for digital still camera applications. It includes a complete analog front end (AFE) with analog-to-digital conversion, combined with a full-function programmable timing generator and 19-channel vertical driver (V-driver). The timing generator is capable of supporting up to 24 vertical clock signals to control advanced CCDs. The on-chip V-driver supports up to 19 channels for use with six-field CCDs. A Precision Timing® core allows adjustment of high speed clocks with approximately 400 ps resolution at 40.5 MHz operation. The AD9920A also contains six GPOs that can be used for shutter and system functions.

FEATURES

Integrated 19-channel V-driver

1.8 V AFETG core

24 programmable vertical clock signals

Correlated double sampler (CDS) with −3 dB, 0 dB,

+3 dB, and +6 dB gain

12-bit, 40.5 MHz analog-to-digital converter (ADC)

Black level clamp with variable level control

Complete on-chip timing generator

Precision Timing core with ~400 ps resolution

On-chip 3 V horizontal and RG drivers

General-purpose outputs (GPOs) for shutter and

system support

On-chip sync generator with external sync input

On-chip 1.8 V low dropout (LDO) regulator

105-ball, 8 mm × 8 mm CSP_BGA package

APPLICATIONS

Digital still cameras