AD9943

Data Sheet Complete 10-Bit and 12-Bit, 25 MHz CCD Signal Processors AD9943/AD9944 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 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, w...