LM9800

更新时间： 2024-11-18 22:30:31

品牌	Logo	应用领域
美国国家半导体 - NSC		传感器
页数	文件大小	规格书
34页	621K
描述
8-Bit Greyscale/24-Bit Color Linear CCD Sensor Processor

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LM9800 数据手册

September 1997

LM9800

8-Bit Greyscale/24-Bit Color Linear CCD Sensor

Processor

General Description

Features

n 2.5 million pixels/s conversion rate

The LM9800 is

a high performance integrated signal

processor/digitizer for linear CCD image scanners. The

LM9800 performs all the analog processing (correlated

double sampling for black level and offset compensation,

pixel-by-pixel gain adjust, and 8-bit analog-to-digital conver-

sion) necessary to maximize the performance of a wide

range of linear CCD sensors.

n Implements Correlated Double Sampling for minimum

noise and offset error

n Pixel-to-pixel gain correction for individual pixels

maximizes dynamic range and resolution, even on

“weak” pixels

n Reference and signal sampling points digitally controlled

in 25ns increments for maximum performance

n Generates all necessary CCD clock signals

n Compatible with a wide range of linear CCDs

n TTL/CMOS input/output compatible

The LM9800 can be digitally programmed to work with a

wide variety of CCDs from different manufacturers. An inter-

nal configuration register sets CCD and sampling timing to

maximize performance, simplifying the design and manufac-

turing processes.

The LM9800 can be used with sequential or parallel output

color CCDs. Coarse gain switching brings weak Blue signals

up to Red/Green levels for best performance. For comple-

mentary voltage reference see the LM4041.

Key Specifications

n Resolution

8 Bits

n Pixel Conversion Rate

n Supply Voltage

2.5MHz

+5V 5%

Applications

n Color and Greyscale Flatbed and Sheetfed Scanners

n General Purpose CCD Imaging

n Supply Voltage (Digital I/O) +3.3V 10% or +5V 5%

n Power Dissipation

210 mW (typ)

Connection Diagram

DS012498-1

TRI-STATE^®is a registered trademark of National Semiconductor Corporation.

™

MICROWIRE is a trademark of National Semiconductor Corporation.

DS012498

www.national.com

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与LM9800相关器件

型号	品牌	获取价格	描述	数据表
LM9800CCV	NSC	获取价格	8-Bit Greyscale/24-Bit Color Linear CCD Sensor Processor
LM9800CCVF	ETC	获取价格	Special Function Video Processor
LM9801	NSC	获取价格	Greyscale/24-Bit Color Linear CCD Sensor Processor
LM9801CCV	NSC	获取价格	Greyscale/24-Bit Color Linear CCD Sensor Processor
LM9801CCVF	NSC	获取价格	Greyscale/24-Bit Color Linear CCD Sensor Processor
LM9801CCVFX	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PQFP52, TQFP-52
LM9801CCVX	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PQCC52, PLASTIC, LCC-52
LM9810	NSC	获取价格	LM9810/20 10/12-Bit Image Sensor Processor Analog Front End
LM9810CCWM	NSC	获取价格	LM9810/20 10/12-Bit Image Sensor Processor Analog Front End
LM9810CCWMX	NSC	获取价格	LM9810/20 10/12-Bit Image Sensor Processor Analog Front End