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AD9927:  14-Bit CCD Signal Processor with V-Driver and Precision Timing™ Generator

Product Details

The AD9927 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 and 18-channel vertical driver (V-driver). The timing generator is capable of supporting up to 24 vertical clock signals to control advanced CCDs. The onchip V-driver supports up to 18 channels for use with 5-field CCDs. A Precision Timing core allows adjustment of high speed clocks with approximately 400 ps resolution at 40 MHz operation. The AD9927 also contains eight general-purpose outputs, which can be used for shutter and system functions.

The analog front end includes black level clamping, CDS, VGA, and a 14-bit ADC. The timing generator provides all the necessary CCD clocks: RG, H-clocks, V-clocks, sensor gate pulses, substrate clock, and substrate bias control.

The AD9927 is specified over an operating temperature range of –25°C to +85°C.


  • Digital Still Camera

    • Integrated 18-channel V-driver
    • 1.8 V AFETG core
    • Internal LDO regulator and charge pump circuitry
    • Compatibility with 3 V or 1.8 V systems
    • 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, 40 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

    Of Note ...

    For additional information, please contact the Camera/Camcorder Development Group.

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