Abstract
A 10-bit 20-MHz A/D converter for high-quality video systems such as high-definition television, video tape recorders for business use, and digital video cameras is described. This LSI circuit uses a standard two-step parallel architecture, includes automatic gain adjustment and digital two-bit error correction, and has a sample-and-hold circuit on the chip. It is fabricated by a 4.5-GHz f/sub T/. 3- mu m-rule standard bipolar technology. Its die size is 25 mm/sup 2/, and its power consumption is 900 mW, which is about half of the lowest values reported to date. The converter can digitize video signals of up to 8.5 MHz at a conversion frequency of 20 MHz. The error in differential gain is 0.5 percent, and the error in differential phase is 0.5 degrees .< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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