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HT82V842A Datasheet 10-Bit 20MSPS CCD Analog Signal Processor

Manufacturer: Holtek Semiconductor

General Description

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.

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, Block Diagram O B P A D C K B L K C L P C A P A D C L P /C C D C L P C S S C K S D A T A M O N O U T T im in g G e n e ra to r S e r ia l R e g is te r B a n d G a p C ir c u it V R P V C O M V R N D C C la m p C C D C L P R E F IN C C D IN C C D A D IN O B C A P O B P D A C C o m p a re B la c k L e v e l R e g is te r A D C L P C D S P G A R o u g h P G A F in e 0 ~ 6 d B (0 .0 4 7 d B /S te p ) 1 0 - B it A D C D O 0 ~ D O 9 S /H -1 .9 4 /0 /6 /1 2 d B 0 /6 /1 2 /1 8 d B V D D V S S R E S E T S T B Y S H R S H D O U T C K Rev.

Overview

HT82V842A 10-Bit 20MSPS CCD Analog Signal Processor.

Key Features

  • Operating voltage: 2.7V~3.6V.
  • Low power consumption: 70mW (Typ. ).
  • Power down mode: less than 30mW.
  • Accepts a direct signal input to ADC or PGA at 1.0.
  • 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 VPP (Typ. ).
  • CCD signal input level: 1.1 VP-P (Max. ).
  • 10-bit ADC (up to 20MHz).