Stmicroelectronics Gmbh

Khin Lay

James Chow

Kenny Wen

G&uuml;nter W Steinbach

An analog-to-digital converter (ADC) ( ) for sampling high speed video signals includes Pre-amplifiers ( ) electrically coupled to Post-amplifiers ( ) that are electrically coupled to output latches ( and ). A sampling clock signal ( ) clocks the output latches ( and ) to sample an input analog electronic signal to provide a digital representation thereof. The ADC ( ) includes an auto-zeroing function to cancel bias voltages at the Post-amplifiers ( ) during a video signal horizontal blanking time period. The ADC ( ) includes a bit dithering function by alternating sets of reference voltages into the Pre-amplifiers ( ) increasing bit resolution. The ADC ( ) includes wired interconnect interpolation between the Pre-amplifiers ( ) and Post-amplifiers ( ) and between the Post-amplifiers ( ) and the output latches ( and ).

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Khin Lay