General Description

The HT82V42 is a complete analog signal processor for CCD imaging applications. It features a 1-channel architecture designed to sample and condition the outputs of tri-linear color CCD arrays. The channel consists of an input clamp, Correlated Double Sampler (CDS), offset DAC and Programmable Gain Amplifier (PGA) and a high performance 16-bit A/D converter. The CDS amplifiers may be disabled for use with sensors such as Contact Image Sensors (CIS) and CMOS active pixel sensors, which do not require CDS.

Features

3.3V single power supply

Low power consumption: 188mW (Typ.)

Power-down mode: 300uA (Typ.)

16-bit 15 MSPS A/D converter

Guaranteed wont miss codes

8-bit programmable gain

Correlated Double Sampling

315mV 8-bit programmable offset

Programmable clamp voltage

Internal voltage reference

Programmable 4-wire serial interface

4-bit multiplexed nibble mode

20-pin SSOP/TSSOP package

Applications

Flatbed document scanners

Film scanners

Digital color copiers

Multifunction peripherals