AD9990

Dual-Channel, 14-Bit CCD Signal Processor and Precision Timing Core AD9990 FEATURES 1.8 V AFETG core Internal LDO regulators 24 programmable vertical clock signals Correlated double sampler (CDS) with −3 dB, 0 dB, +3 dB, and +6 dB gain 6 dB to 42 dB, 10-bit variable gain amplifier (VGA) 14-bit, 32 MHz analog-to-digital converter (ADC) Black level clamp with variable level control Complete on-chip timing generator Precision Timing core with ~488 ps resolution On-chip 3 V horizontal and RG drivers General-purpose outputs (GPOs) for shutter and system support On-chip driver for external crystal On-chip sync generator with external sync input 112-ball CSP_BGA package, 8 mm × 8 mm, 0.65 mm pitch APPLICATIONS Digital still cameras GENERAL DESCRIPTION The AD9990 is a highly integrated CCD signal processor for digital still camera applications. It includes a complete analog front end with analog-to-digital conversion and a full-function, programmable timing generator for a 2-channel output CCD. Each channel is specified up to 32 MHz. The timing generator is capable of supporting up to 24 vertical clock signals to control advanced CCDs. A Precision Timing® core allows adjustment of high speed clocks with ~488 ps resolution at 32 MHz operation. The AD9990 also contains eight general-purpose outputs that can be used for shutter and system functions. Each analog front end includes black level clamping, a CDS, a VGA, and a 14-bit ADC. The timing generator provides all the necessary CCD ...