HT82V842A -- 10-bit 20MSPS CCD Analog Signal Processor

General Description

The HT82V842A is a CMOS single-chip signal processing device for CCD area sensors. It consists of a clamp circuit, Correlated Double Sampler (CDS), Programmable Gain Amplifier (PGA), reference voltage generator, black level detection circuit, 20MHz 10-bit A/D converter (ADC), timing generator for internally required pulses, serial interface for internal function control and PGA gain control.

Features

  • Operating voltage: 2.7V~3.6V
  • Low power consumption: 70mW (Typ.)
  • Power down mode: less than 30uW
  • Accepts a direct signal input to ADC or PGA at 1.0 VPP (Typ.)
  • CCD signal input level: 1.1 VP-P (Max.)
  • 10-bit ADC (up to 20MHz)
    - DNL: ±0.6 LSB (Typ.)
  • Black level neutralizer, target setting: 16~127LSB
  • Built-in serial interface
  • Independent ADC input conversion clock and data output clock
  • Independent CDS and PGA gain control
    - CDS: -1.94/0/6/12dB
    - PGA: 0~24dB
  • Wide gain range: -1.94~36dB
  • High speed sample and hold circuit: pulse width 11ns (Min.)
  • 48-pin LQFP package

Technical Document

Other Information