Low-Gain Double-Sampling Switched-Capacitor Circuitry

Introduction In the electronic circuit industry, there is a continuing effort to increase circuit speeds as well as decrease circuit device sizes. As circuit designs become more advanced, circuits become faster, smaller and are able to operate with less voltage and power. In switched-capacitor circuitry, there is a technique known as double-sampling, which enables faster analog-to-digital conversion. The idea behind double-sampling is that in an analog switched-capacitor system, twice the amount of data can be processed if two sets of analog sampling circuitry are interleaved. Technology description Researchers at the University of Washington have invented methods and apparatuses for double-sampling an operational amplifier having dedicated unswitched connections to sample and hold circuits. This new circuit removes the typical 1/gain error during the signal sample and hold in double-sampled switched-capacitor circuitry. Removing this gain error improves output accuracy of all double-sampled switched-capacitor circuits and makes moderate and low-gain amplifiers usable in double-sampling circuits. Business opportunity The latent demand for integrated microcircuits, semiconductor networks, microprocessors, and MOS memories is currently estimated to be $291.9 billion. World Market for Electronic Computer Manufacturing is projected to grow to $369 billion by 2011. Intellectual Property Position US 6,563,348: Method and Apparatus for Double-Sampling A Signal, Issued May 2003. For more information on this technology contact:
Patrick Shelby Technology Manager jpshelby@u.washington.edu 206-616-2127

Type of Offer: Licensing



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