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LM9833

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 sen...

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SeekIC No. : 004396306 Detail

LM9833: 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 12...

LM9833 Data Sheet

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Part Number:
LM9833
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



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


Application

•  Color Flatbed Document Scanners
•  Color Sheetfed Document Scanners


Pinout

Connection Diagram


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.




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