LM9833CCVJD

Product Summary

The LM9833CCVJD a complete USB image scanner system on a single IC. The LM9833CCVJD 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. It 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 applications of LM9833CCVJD include color flatbed document scanners, color sheetfed document scanners.

Parametrics

LM9833CCVJD absolute maximum ratings: (1)Positive Supply Voltage: (V+=VA=VD=VDRAM); (2)With Respect to GND=AGND=DGND: 6.5V; (3)Voltage On Any Input or Output Pin -0.3V to V++0.3V; (4)Input Current at any pin (Note 3): ±25mA; (5)Package Input Current (Note 3): ±50mA; (6)Package Dissipation at TA = 25℃: (Note 4); (7)ESD Susceptibility: (Note 5); (8)Human Body Model: 2000 V; (9)Machine Model: 250 V; (10)Soldering Information Infrared, 10 seconds (Note 6): 235℃; (11)Storage Temperature: -65 to +150℃.

Features

LM9833CCVJD features: (1)16 bit ADC digitizes at up to 6Mpixels/s (2M RGB pixels/sec); (2)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; (3)Provides 50-2400dpi vertical resolution in 1 dpi increments; (4)Pixel rate error correction for gain (shading) and offset errors; (5)Supports 4 or 16Mbit external DRAMs; (6)Multiple CCD clocking rates allows matching of CCD clock to scan resolution and pixel depth for maximum scan speed; (7)Stepper motor control tightly coupled with image data buffer management to maximize data transfer efficiency; (8)PWM stepper motor current control allows microstepping for the price of fullstepping; (9)USB interface for Plug and Play operation on USB-equipped computers; (10)Serial EEPROM option for custom Vendor and Product IDs; (11)Support for USB bus-powered operation; (12)Pixel depths of 1, 2, or 4 bits are packed into bytes for faster; (13)scans of line art and low pixel depth images; (14)Supports 3 channel CCDs and 1 channel CIS sensors; (15)3 (R, G, and B) 12-bit, user-programmable gamma correction tables; (16)Compatible with a wide range of color linear CCDs and Contact Image Sensors (CIS); (17)Operates with 48MHz external crystal; (18)Internal bandgap voltage reference; (19)100 pin TQFP package.

Diagrams