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AD9920A:  12-Bit CCD Signal Processor with V-Driver and Precision Timing Generator

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 26 vertical clock signals to control advanced ...More

AD9920A:  12-Bit CCD Signal Processor with V-Driver and Precision Timing Generator

Product 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 26 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.

The analog front end includes black level clamping, variable gain CDS, and a 12-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 AD9920A is specified over an operating temperature range of −25°C to +85°C.

Applications

  • Digital still cameras

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    • 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)
    • Resolution (Bits): 12bit
    • Input Range (V p-p): 1V p-p
    • Sample Rate (MSPS): 40.5MSPS
    • Power Dissipation (mW): 240mW
    • DNL typ (LSB): ±0.5LSB
    • PGA Range (dB): 6 to 42

    AD9920A Functional Block Diagram

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    Part# Resolution (Bits) Sample Rate (MSPS) Input Range (V p-p) Power Dissipation (mW) Programable H-Drivers Programable V-Clocks Integrated V-Driver Chs Special Features Price* (1000-4999)
    AD9920A 12 40.5 1 240 Yes Yes 19 - -
    AD9923A 12 36 1 - Yes Yes 15 - $8.66
    AD9949 12 36 1 320 Yes No 0 PxGA $7.20
    AD9970 14 65 1 150 No No 0 - $10.87
    AD9974 14 65 1 300 No No 0 Dual Channel $46.61
    AD9977 14 65 1 300 Yes No 0 Dual Channel $42.37
    AD9978 14 55 1.4 190 No No 0 Dual Channel $23.30
    AD9978A 14 75 2 - - - 0 Dual Channel -
    AD9979 14 65 1 150 Yes No 0 - $11.95
    AD9990 14 32 1 320 Yes Yes 0 Dual Channel $10.00
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    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.