LM9830VJDX

更新时间： 2024-11-18 22:08:31

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
45页	567K
描述
LM9830 36-Bit Color Document Scanner

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中文翻译

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数据手册

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LM9830VJDX 数据手册

November 1998

The LM9830 is a complete document scanner system on a sin-

gle IC. The LM9830 provides all the functions (CCD control, illu-

mination control, analog front end, pixel processing function

image data buffer/SRAM controller, microstepping motor control-

ler, and EPP parallel port interface) necessary to create a high

performance color scanner. The LM9830 scans images in 36 bit

color, and has output data formats for 36 bits, 30 bits, and 24

bits.

LM9830 36-Bit Color Document Scanner

scan resolution and pixel depth for maximum scan speed.

Stepper motor control tightly coupled with buffer management

to maximize data transfer efficiency.

PWM stepper motor current control allows microstepping for

the price of fullstepping.

General Description

•

Supports 64k, 128k, or 256k x8 external SRAMs.

Parallel Port interface supports EPP, PS2 (bidirectional), or

SPP (nibble) modes of operation.

•

Pixel depths of 1, 2, or 4 bits are packed into bytes for faster

scans of line art and low pixel depth images.

Supports 1 and 3 channel CIS and CCD devices.

3 (R, G, and B) user-programmable gamma correction tables.

Able to transmit an arbitrary range of pixels to speed up

scanning of smaller items (business cards, etc.) by zooming

in on a subset of CCD pixels.

•

The only additional active components required are an external

SRAM for data buffering and power transistors for the stepper

motor. Parallel port pass-through requires two additional

TTL/CMOS logic ICs.

Applications

•

Compatible with a wide range of color linear CCDs and

Contact Image Sensors (CIS)

Internal bandgap voltage reference.

• Color Flatbed Document Scanners

• Color Sheetfed Document Scanners

•

100 pin TQFP package

Features

Key Specifications

•

Scans at up to 6Mpixels/s (2M RGB pixels/sec).

• Analog to Digital Converter Resolution

• Maximum Pixel Conversion Rate

12 Bits

6MHz

Digital Pixel Processing provides 300, 200, 150, 100, 75, and

50 dpi horizontal resolution from 300dpi sensor, and 600, 400,

300, 200, 150, 100, 75, and 50 dpi horizontal resolution from

a 600dpi sensor.

• A4 Color 150dpi scan (typical, EPP Interface) <10 seconds

• A4 Color 300dpi scan (typical, EPP Interface) <40 seconds

• A4 Color 600dpi scan (typical, EPP Interface) <160 seconds

•

Provides 50-600dpi vertical resolution in 1 dpi increments.

Pixel rate error correction for gain (shading) and offset errors.

Output formats include 12 bit linear, 10 bit linear with shading

and offset, or 8 bit gamma corrected, all with 12 bit accuracy.

Multiple CCD clocking rates allows matching of CCD clock to

• Supply Voltage

• Power Dissipation (typical)

+5V±10%

350mW

•

Scanner Block Diagram

+24V

Buffer

Computer

Printer

Stepper

Motor

1-3

CCD/CIS

Power

2-6

Transistors

LM9830VJD

Illumination

SRAM

1-3

Ordering Information

Commercial (0°C ≤ T_A≤ +70°C)

Package

VJD100A 100 Pin Thin Quad Flatpac

VJD100A 100 Pin Thin Quad Flatpac, Tape & Reel

LM9830VJD

LM9830VJDX

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

http://www.national.com

12 3 4 5 6 7...45

中文翻译

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与LM9830VJDX相关器件

型号	品牌	获取价格	描述	数据表
LM9831	NSC	获取价格	LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9831CCVJD	NSC	获取价格	LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9831CCVJDX	NSC	获取价格	LM9831 42-Bit Color, 1200dpi USB Image Scanner
LM9832	NSC	获取价格	LM9832 42-Bit Color, 1200dpi USB Image Scanner
LM9832CCVJD	NSC	获取价格	LM9832 42-Bit Color, 1200dpi USB Image Scanner
LM9833	NSC	获取价格	LM9833 48-Bit Color, 1200dpi USB Image Scanner
LM9833CCVJD	NSC	获取价格	LM9833 48-Bit Color, 1200dpi USB Image Scanner
LM9833CCVJD/NOPB	NSC	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP100, PLASTIC, TQFP-100, Consumer IC:Other
LM98501	NSC	获取价格	10-Bit, 27 MSPS Camera Signal Processor
LM98501CCVBH	NSC	获取价格	10-Bit, 27 MSPS Camera Signal Processor

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