Datasheet > HT82V42_10

HT82V42_10

更新时间： 2024-01-02 02:44:03

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		/
页数	文件大小	规格书
24页	402K
描述
Single-channel 16-Bit CCD/CIS Analog Signal Processor

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HT82V42_10 数据手册

HT82V42

Single-channel 16-Bit CCD/CIS Analog Signal Processor

Features

3.3V single power supply

±315mV 8-bit programmable offset

Programmable clamp voltage

Internal voltage reference

Low power consumption: 188mW (Typ.)

Power-down mode: 300uA (Typ.)

16-bit 15 MSPS A/D converter

Programmable 4-wire serial interface

4-bit multiplexed nibble mode

20-pin SSOP/TSSOP package

Guaranteed won¢t miss codes

8-bit programmable gain

Correlated Double Sampling

Applications

Flatbed document scanners

Digital color copiers

Film scanners

Multifunction peripherals

General Description

The HT82V42 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

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 ampli-

fiers may be disabled for use with sensors such as Con-

tact Image Sensors (CIS) and CMOS active pixel sen-

sors, which do not require CDS. The 16-bit digital output

is available in 4-bit wide multiplexed format. The internal

registers are programmed through a 4-wire serial inter-

face, which provides gain, offset and operating mode

adjustments. The HT82V42 operates from a single 3.3V

power supply and typically consumes 188mW of power.

Block Diagram

AVDD AVSS

VRB

VRT

VRX

AVSS

DVDD1

DVDD2

DGND

RPGA

3:1

MUX

GPGA

BPGA

BANDGAP

Reference

VIN

CDS

PGA

RDAC

GDAC

BDAC

OD[0]

OD[1]

OD[2]

10-Bit

DAC

3:1

MUX

16-Bit

ADC

16 : 4

MUX

OD[3]/SDO

Configuration

MUX

RED

SCLK

SEN

SDI

Digital

Control

Interface

GREEN

BLUE

Gain

Registers

RED

GREEN

BLUE

Offset

Registers

VRLC/

BAIS

Clamp

DAC

CDSCLK2

DCLK

RLC/ACYC

Rev. 1.20

December 8, 2010

12 3 4 5 6 7...24

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