The LM9833 is a complete USB image scanner system on a single 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 or 16 bit gray, and has output data formats for 24, 36, and 48 bit color or 8, 12, and 16 bit gray. The LM9833 supports sensors with pixel counts of up to 16384 pixels × 3 colors (1200 dpi × 13.6 inches).
The LM9833s 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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