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LM9832CCVJD PDF预览

LM9832CCVJD

更新时间： 2024-11-18 22:28:23
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
42页 338K
描述
LM9832 42-Bit Color, 1200dpi USB Image Scanner

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中文翻译

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LM9832CCVJD 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：TFQFP, TQFP100,.63SQReach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.82
商用集成电路类型：CONSUMER CIRCUITJESD-30 代码：S-PQFP-G100
JESD-609代码：e0长度：14 mm
功能数量：1端子数量：100
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：TFQFP
封装等效代码：TQFP100,.63SQ封装形状：SQUARE
封装形式：FLATPACK, THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
电源：5 V认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Other Consumer ICs
最大压摆率：132 mA最大供电电压 (Vsup)：5.25 V
最小供电电压 (Vsup)：4.75 V表面贴装：YES
温度等级：COMMERCIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：14 mmBase Number Matches：1

LM9832CCVJD 数据手册

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April 2000  
N
LM9832 42-Bit Color, 1200dpi USB Image Scanner  
General Description  
Features  
The LM9832 is a complete USB image scanner system on a sin-  
gle IC. The LM9832 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 LM9832 scans images in 42 bit  
color/14 bit gray, and has output data formats for 42 and 24 bit  
color/14 and 8 bit gray. The LM9832 supports sensors with pixel  
counts of up to 16384 pixels x 3 colors (1200 dpi x 13.6 inches).  
•
•
14 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.  
The LM9832’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.  
•
•
•
USB interface for Plug and Play operation on USB-equipped  
computers.  
Applications  
•
•
•
Serial EEPROM option for custom Vendor and Product IDs.  
Support for USB bus-powered operation.  
• Color Flatbed Document Scanners  
• Color Sheetfed Document Scanners  
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.  
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  
14 Bits  
6MHz  
<10 seconds  
<40 seconds  
<160 seconds  
•
•
•
•
Internal bandgap voltage reference.  
100 pin TQFP package  
- LM9832  
- LM9832 DRAM I/O  
• Maximum Operating Current Consumption  
• Maximum Suspend Current Consumption  
+4.75V to +5.25V  
+2.85 to +5.25V  
136mA  
175µA  
LM9832 Scanner System Block Diagram  
+12V  
USB  
Port  
Optional Serial  
EEPROM  
Stepper  
Motor  
2
2
8
MISC  
I/O  
1-3  
2-6  
CCD/CIS  
Power  
Transistors  
LM9832CCVJD  
Illumination  
30  
DRAM  
1-3  
48MHz Crystal  
Ordering Information  
Commercial (0°C ≤ TA ≤ +70°C)  
Package  
VJD100A 100 Pin Thin Quad Flatpac  
LM9832CCVJD  
©2000 National Semiconductor Corporation  
www.national.com  
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