HT82V36 datasheet(1/10 Pages) HOLTEK

tên linh kiện	HT82V36

Giải thích chi tiết về linh kiện	16-Bit CCD/CIS Analog Signal Processor

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HT82V36

16-Bit CCD/CIS Analog Signal Processor

Block Diagram

Rev. 1.30

1

June 29, 2004

Features

· Operating voltage: 3.3V

· Low power consumption at 56mW

· Power-down mode: Under 1mA

(clock timing keep low)

· 16-bit 6 MSPS A/D converter

· Guaranteed no missing codes

· Supports CDS/SHA mode

· 1~6 programmable gain

· ±200mV programmable offset

· Input clamp circuitry

· Internal voltage reference

· Multiplexed byte-wide output (8+8 format)

· Programmable 3-wire serial interface

· 3.3V digital I/O compatibility

· 28-pin SSOP (209mil) package

C D S

+

M U X

G I N

P G A

C L A M P

9 B i t s

D A C

1 6 B i t s

A / D

C o n v e r t e r

R E G I S T E R S

B A N D G A P

9

6

1 6

D 0 ~ D 7

S L O A D

S D A T A

S C L K

General Description

The HT82V36 is a complete analog signal processor for

CCD imaging applications. It features a 1-channel archi-

tecture designed to sample and condition the outputs of

linear CCD arrays. It consists of an input clamp, Corre-

lated Double Sampler (CDS), offset DAC and Program-

mable Gain Amplifier (PGA), and a low power 16-bit A/D

converter.

The CDS amplifiers may be disabled for use with sen-

sors such as Contact Image Sensors (CIS) and CMOS

active pixel sensors, which do not require CDS.

The 16-bit digital output is multiplexed into an 8-bit out-

put word that is accessed using two read cycles. The in-

ternal registers are programmed through a 3-wire serial

interface, which provides gain, offset and operating

mode adjustments.

Applications

Low power flatbed document scanners

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