IT9943 - Complete 10-Bit, 25MHz CCD Signal Processor


The IT9943 are complete analog signal processors for CCD applications. It feature a 25MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The signal chain for the IT9943 consists of a correlated double sampler (CDS), a digitally controlled variable gain amplifier (VGA), and a black level clamp. The IT9943 offers 10-bit ADC resolution.

The internal registers are programmed through 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input clock polarity, and power-down modes. The IT9943 operate from a single 3V power supply, typically dissipate 79mW, and are package in space-saving 32-lead QFN packages.



  • 25 MSPS correlated double sampler (CDS)

  • 6dB to 42dB 10-bit variable gain amplifier (VGA)

  • Low noise optical black clamp circuit

  • Preblanking function

  • 10-bit 25 MSPS A/D converter

  • No missing code guaranteed

  • 3-wire serial digital interface

  • 3V single-supply operation

  • Space-saving 5mm x 5mm QFN-32 package



Technology Information:

  Data Sheet

  Package: QFN-32


    Other Products