LM9800CCV Datasheet

IC型號(hào)：
LM9800CCV
PDF描述：
8-Bit Greyscale/24-Bit Color Linear CCD Sensor Processor
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LM9800 8-Bit Greyscale/24-Bit Color Linear CCD Sensor Processor

September 1997

LM9800

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

Processor

General Description

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.

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.

Features

2.5 million pixels/s conversion rate

Implements Correlated Double Sampling for minimum

noise and offset error

Pixel-to-pixel gain correction for individual pixels

maximizes dynamic range and resolution, even on

鈥渨eak鈥?pixels

Reference and signal sampling points digitally controlled

in 25ns increments for maximum performance

Generates all necessary CCD clock signals

Compatible with a wide range of linear CCDs

TTL/CMOS input/output compatible

Key Specifications

Resolution

Pixel Conversion Rate

Supply Voltage

Supply Voltage (Digital I/O)

Power Dissipation

8 Bits

2.5MHz

+5V

鹵

10% or +5V

鹵

+3.3V

210 mW (typ)

Applications

Color and Greyscale Flatbed and Sheetfed Scanners

General Purpose CCD Imaging

Connection Diagram

DS012498-1

TRI-STATE

廬

is a registered trademark of National Semiconductor Corporation.

MICROWIRE

鈩?/div>

is a trademark of National Semiconductor Corporation.

漏 1997 National Semiconductor Corporation

DS012498

www.national.com

型號(hào)

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描述

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