METHOD AND SYSTEM TO ENHANCE DIFFERENTIAL DYNAMIC RANGE AND SIGNAL/NOISE IN CMOS RANGE FINDING SYSTEMS USING DIFFERENTIAL SENSORS

Cyrus Bamji (Inventor), Khaled Salama (Inventor)

Research output: Patent

Abstract

Dynamic range of a differential pixel is enhanced by injecting, synchronously or asynchronously, a fixed compensating offset (?V) into a differential signal capacitor whenever magnitude of the differential signal across the capacitor exceeds a predetermined value. The number (N) of ?V offsets made is counted. Effective differential signal capacitor voltage V(t) = Vo + N-?V, where Vo is capacitor voltage. Differential pixel signal/noise ratio is increased by dynamically maximizing operational amplifier gain AG for each differential pixel.

Original languageEnglish (US)
Patent numberWO2006086455
IPCH01L 27/ 00 A I
Priority date02/8/05
StatePublished - Aug 17 2006
Externally publishedYes

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