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參數(shù)資料
| 型號： | LM9833 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM9833 48-Bit Color, 1200dpi USB Image Scanner |
| 中文描述： | LM9833 48位彩色，1200dpi的USB圖像掃描儀 |
| 文件頁數(shù)： | 1/42頁 |
| 文件大?。?/td> | 547K |
| 代理商： | LM9833 |
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www.national.com
General Description
The LM9833 is a complete USB image scanner system on a sin-
gle IC. The LM9833 provides all the functions (image sensor
control, illumination control, analog front end, pixel processing
function image data buffer/DRAM controller, microstepping
motor controller, and USB interface) necessary to create a high
performance color scanner. The LM9833 scans images in 48 bit
color/16 bit gray, and has output data formats for 48 and 24bit
color/16 and 8 bit gray. The LM9833 supports sensors with pixel
counts of up to 16384 pixels x 3 colors (1200 dpi x 13.6 inches).
The LM9833’s low operating and suspend mode supply currents
allow design of USB bus-powered scanners. The only additional
active components required are an external 4Mbit or 16Mbit
DRAM for data buffering and power transistors for the stepper
motor.
Applications
Color Flatbed Document Scanners
Color Sheetfed Document Scanners
Key Specifications
Analog to Digital Converter Resolution
Maximum Pixel Conversion Rate
A4 Color 150dpi scan time
A4 Color 300dpi scan time
A4 Color 600dpi scan time
Supply Voltage
- LM9833
- LM9833 DRAM I/O
Maximum Operating Current Consumption
Maximum Suspend Current Consumption
16 Bits
6MHz
<10 seconds
<40 seconds
<160 seconds
+4.75V to +5.25V
+2.85 to +5.25V
136mA
175μA
Features
16 bit ADC digitizes at up to 6Mpixels/s (2M RGB pixels/sec).
Digital Pixel Processing provides 1200, 800, 600, 400, 300,
200, 150, and 100dpi horizontal resolution from a 1200dpi
sensor and 600, 400, 300, 200, 150, 100, 75, and 50dpi
horizontal resolution from a 600dpi sensor.
Provides 50-2400dpi vertical resolution in 1 dpi increments.
Pixel rate error correction for gain (shading) and offset errors.
Supports 4 or 16Mbit external DRAMs.
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 image data buffer
management to maximize data transfer efficiency.
PWM stepper motor current control allows microstepping for
the price of fullstepping.
USB interface for Plug and Play operation on USB-equipped
computers.
Serial EEPROM option for custom Vendor and Product IDs.
Support for USB bus-powered 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 3 channel CCDs and 1 channel CIS sensors.
3 (R, G, and B) 12-bit, user-programmable gamma correction
tables.
Compatible with a wide range of color linear CCDs and
Contact Image Sensors (CIS).
Operates with 48MHz external crystal.
Internal bandgap voltage reference.
100 pin TQFP package
LM9833 48-Bit Color, 1200dpi USB Image Scanner
CCD/CIS
Illumination
+12V
Stepper
Motor
1-3
1-3
2-6
Power
Transistors
DRAM
30
LM9833CCVJD
USB
Port
2
48MHz Crystal
Serial
EEPROM
2
8
MISC
I/O
LM9833 Scanner System Block Diagram
Ordering Information
Commercial (0°C
≤
T
A
≤
+70°C)
Package
LM9833CCVJD
VJD100A 100 Pin Thin Quad Flatpac
L
2000 National Semiconductor Corporation
October 2001
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM98501CCVBH | 10-Bit, 27 MSPS Camera Signal Processor |
| LM98501 | 10-Bit, 27 MSPS Camera Signal Processor |
| LMC555CBPEVAL | CMOS Timer |
| LMC555CN | CMOS Timer |
| LMC555 | CMOS Timer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9833B-F WAF | 制造商:Texas Instruments 功能描述: |
| LM9833CCVJD | 制造商:Texas Instruments 功能描述:USB Image Scanner 100-Pin TQFP |
| LM9833CCVJD NOPB | 制造商:Texas Instruments 功能描述:Bulk |
| LM9833CCVJD/NOPB | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| LM98501 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:10-Bit, 27 MSPS Camera Signal Processor |
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