Amplifiers with compensation

Details Amplifiers with compensation Amplifiers with compensation

2007-01-09

2007-01-09

Mottola, Steven J. (Department: 2817)

Amplifiers

With periodic switching input-output

C330S084000, C330S107000

Reexamination Certificate

active

11292436

ABSTRACT:
An amplifier circuit comprises a first operational transconductance (OTA) having an input and an output and a second OTA having an input that communicates with an output of the first OTA. A third OTA has an input that communicates with an input of the first OTA. A fourth OTA has an input that communicates with an output of the third OTA and an output that communicates with the input of the second OTA. A switched capacitance circuit selectively couples a capacitance to at least one of the input of the third OTA and the output of third OTA.

REFERENCES:
patent: 3079568 (1963-02-01), Werth
patent: 3605031 (1971-09-01), Tongue
patent: 5121075 (1992-06-01), Roach
patent: 6002299 (1999-12-01), Thomsen
patent: 6208206 (2001-03-01), Leung et al.
patent: 6842068 (2005-01-01), Perrier et al.
patent: 6930544 (2005-08-01), Yokoyama
Application of the Operational Transconductance Amplifier (OTA) to Voltage-controlled Amplifiers and Active Filters; W. Grise, Department of IET, Morehead State University, Morehead, KY; 1998; http://engr.nmsu.edu/etti/winter98/electronics/grise/wrg.html; 10 pages.

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