The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 1985
Filed:
May. 04, 1984
Gabor C Temes, Los Angeles, CA (US);
Kenneth W Martin, Los Angeles, CA (US);
The Regeants of University of Calif., Berkeley, CA (US);
Abstract
A switched capacitor type amplifier system including an operational amplifier is provided with compensating capacitive coupling during the non-sampling portion of the cycle from the output of the operational amplifier to its input, to avoid output discontinuities, and to provide compensation for the offset voltage of the operational amplifier. The circuit includes a two phase clock, with the signal input to the input capacitor being alternately sampled and blocked, and the capacitive compensation circuit mentioned above being alternately blocked and connected, respectively, during successive phases of the clock operation. Special circuitry for preventing 'clock feed-through' and for implementing a Multiplying Digital to Analog Converter, or MDAC, are disclosed.