LM9800

更新时间： 2024-02-20 11:21:36

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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技术参数
数据手册

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LM9800 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	QFP, QFP52,.47SQ	Reach Compliance Code：	unknown
风险等级：	5.92	Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G52
JESD-609代码：	e0	端子数量：	52
最高工作温度：	70 °C	最低工作温度：	10 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QFP
封装等效代码：	QFP52,.47SQ	封装形状：	SQUARE
封装形式：	FLATPACK	电源：	3/5,5 V
认证状态：	Not Qualified	子类别：	Other Consumer ICs
表面贴装：	YES	技术：	BIPOLAR
温度等级：	OTHER	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	QUAD	Base Number Matches：	1

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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