Transconductance amplifiers with compensation

Details Transconductance amplifiers with compensation Transconductance amplifiers with compensation

2007-04-10

2007-04-10

Mottola, Steven J. (Department: 2817)

Amplifiers

Signal feedback

In cascade amplifiers

C330S126000

Reexamination Certificate

active

11264921

ABSTRACT:
An amplifier circuit comprises a first operational transconductance amplifier (OTA) has an input that communicates with the output of the first amplifier. A third amplifier has an input that communicates with the input of the first amplifier and an output. A fourth OTA has an input that communicates with the output of the third amplifier and an output. A feedback resistance communicates with the input and the output of the fourth OTA. A capacitance communicates with the output of the fourth OTA and with the input of the second 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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