AD9923A

CCD信号处理器， V型驱动器和Precision Timing⑩发生器 CCD Signal Processor with V-Driver and Precision Timing⑩ Generator

Product Details

The is a complete 36 MHz front-end solution for digital still cameras and other CCD imaging applications. Similar to the AD9923 product, the AD9923A includes the analog front end AFE, a fully programmable timing generator TG, and a 15-channel vertical driver V-driver. A _Precision Timing_ core allows adjustment of high speed clocks with approximately 600 ps resolution at 36 MHz operation.

The on-chip V-driver supports up to 15 channels for use with 5-field, 10-phase CCDs.

The analog front end includes black level clamping, CDS, VGA, and a 12-bit ADC. The timing generator and V-driver provide all the necessary CCD clocks: RG, H-clocks, vertical clocks, sensor gate pulses, substrate clock, and substrate bias control. The internal registers are programmed using a 3-wire serial interface.

Packaged in an 8 mm × 8 mm CSP_BGA, the AD9923A is specified over an operating temperature range of −25°C to +85°C.

**Applications**

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Digital still cameras

### Features and Benefits

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Integrated 15-channel V-driver

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12-bit, 36 MHz analog-to-digital converter ADC

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Similar register map to the AD9923

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5-field, 10-phase vertical clock support

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Complete on-chip timing generator

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Precision Timing core with <600 ps resolution

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Correlated double sampler CDS

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

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Black level clamp with variable level control

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On-chip 3 V horizontal and RG drivers

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2-phase and 4-phase H-clock modes

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Electronic and mechanical shutter support