LM9830 datasheet(1/45 Pages) NSC

номер детали	LM9830

подробное описание детали	LM9830 36-Bit Color Document Scanner

PDF	45 Pages

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производитель	NSC [National Semiconductor (TI)]

домашняя страница	http://www.national.com

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General Description

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.

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

• Color Flatbed Document Scanners

• Color Sheetfed Document Scanners

Features

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

• 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.

• 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

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.

• 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.

• Compatible with a wide range of color linear CCDs and

Contact Image Sensors (CIS)

• Internal bandgap voltage reference.

• 100 pin TQFP package

Key Specifications

• Analog to Digital Converter Resolution

12 Bits

• Maximum Pixel Conversion Rate

6MHz

• 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

• Supply Voltage

+5V±10%

• Power Dissipation (typical)

350mW

LM9830 36-Bit Color Document Scanner

Scanner Block Diagram

Buffer

To

Computer

To

Printer

CCD/CIS

Illumination

+24V

Stepper

Motor

1-3

2-6

9

2

8

Power

Transistors

SRAM

28

LM9830VJD

Ordering Information

Commercial (0°C

≤ T

A ≤ +70°C)

Package

LM9830VJD

VJD100A 100 Pin Thin Quad Flatpac

LM9830VJDX

VJD100A 100 Pin Thin Quad Flatpac, Tape & Reel

November 1998

N

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

Аналогичный номер детали - LM9830

производитель	номер детали	датащи	подробное описание детали
National Semiconductor ...	LM9831	320Kb / 41P	LM9831 42-Bit Color, 1200dpi USB Image Scanner
	LM9831CCVJD	320Kb / 41P	LM9831 42-Bit Color, 1200dpi USB Image Scanner
	LM9831CCVJDX	320Kb / 41P	LM9831 42-Bit Color, 1200dpi USB Image Scanner
	LM9832	337Kb / 42P	LM9832 42-Bit Color, 1200dpi USB Image Scanner
	LM9832CCVJD	337Kb / 42P	LM9832 42-Bit Color, 1200dpi USB Image Scanner

More results

Аналогичное описание - LM9830

производитель	номер детали	датащи	подробное описание детали
National Semiconductor ...	LM9822	242Kb / 22P	LM9822 3 Channel 42-Bit Color Scanner Analog Front End
	LM9831	320Kb / 41P	LM9831 42-Bit Color, 1200dpi USB Image Scanner
	LM9832	337Kb / 42P	LM9832 42-Bit Color, 1200dpi USB Image Scanner
	LM9833	547Kb / 42P	LM9833 48-Bit Color, 1200dpi USB Image Scanner
Sanyo Semicon Device	LC82104	57Kb / 6P	Color Image Processing IC for Fax and Scanner Applications
National Semiconductor ...	LM9823	239Kb / 22P	LM9823 3 Channel 48-Bit Color Scanner Analog Front End
Fairchild Semiconductor	TMC2272A	177Kb / 20P	Digital Colorspace Converter 36 Bit Color, 50 MHz
Rohm	IA1208-FE10A	77Kb / 6P	Color image sensor heads for High-speed Scanner
Texas Instruments	LM9822	285Kb / 25P	3 Channel 42-Bit Color Scanner Analog Front End
Texas Instruments	LM9833	690Kb / 44P	48-Bit Color, 1200dpi USB Image Scanner

More results

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