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Chip Eases Design Of Front And Rear Projection Systems

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Integrating on-chip fast input logic, accurate bipolar DACs, and fast-settling, high-voltage, precision drive amplifiers, the AD8381 LCD microdisplay driver promises to ease the design of front or rear projection systems through its high-speed decimating input logic that can be loaded left to right, or vice-versa. This newest member of the DecDriver family of drive electronics also eliminates the need for external amplifiers and calibration cycles by providing laser-trimmed accurate, fast-settling-time imaging signals, and a full, 9V to 18V power supply range. The AD8381 chip also offers logic-controlled inversion and voltage-controlled mid-scale brightness and contrast controls. These many on-chip features reportedly can bring about a dramatic reduction in the size and cost of LCD projector drive electronics boards, with the device’s flexible digital input formats also enabling several AD8381s to be used in parallel to achieve even higher resolution displays. The new IC dissipates nominally 0.57W of static power, with a standby pin reducing power to a minimum, with fast recovery. Housed in a 48-lead, 7 mm x 7mm x 1.4-mm LQFP package, the AD8381 is priced at $7.50 each/1,000. ANALOG DEVICES INC., Wilmington, MA. (800) 262-5643.

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