GENERAL DESCRIPTION
The AD9943/AD9944 are complete analog signal processors for CCD applications. They feature a 25 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The signal chain for the AD9943/AD9944 consists of a correlated double sampler (CDS), a digitally controlled variable gain amplifier (VGA), and a black level clamp. The AD9943 offers 10-bit ADC resolution, while the AD9944 contains a true 12-bit ADC.

FEATURES
    25 MSPS correlated double sampler (CDS)
    6 dB to 40 dB 10-bit variable gain amplifier (VGA)
    Low noise optical black clamp circuit
    Preblanking function
    10-bit (AD9943), 12-bit (AD9944) 25 MSPS A/D converter
    No missing codes guaranteed
    3-wire serial digital interface
    3 V single-supply operation
    Space-saving 32-lead 5 mm × 5 mm LFCSP package

APPLICATIONS
    Digital still cameras
    Digital video camcorders
    PC cameras
    Portable CCD imaging devices
    CCTV cameras