Fast transconductance amplifier

Details Fast transconductance amplifier Fast transconductance amplifier

2005-06-30

2008-03-18

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C455S076000

Reexamination Certificate

active

07345543

ABSTRACT:
An amplifier including an input stage having two inputs, each input being connected to the control terminals of first and second transistors, a current output of the first transistor being connected to a first terminal of a resistor and to a reference supply rail via a variable current source having a value capable of automatically varying according to the voltage applied between said amplifier inputs up to a limiting value, and a current output of the second transistor being connected to the reference supply rail via a fixed current source and to the second terminal of the resistor.

REFERENCES:
patent: 5185582 (1993-02-01), Barbu
patent: 5983082 (1999-11-01), Hilbert
patent: 5999050 (1999-12-01), Baltus
patent: 2001/0001232 (2001-05-01), Kung
patent: 2003/0206061 (2003-11-01), Yamamoto
French Search Report from French Patent Application No. 04/51364, filed Jun. 30, 2004
Elwan H. et al. “CMOS low-voltage class—AB operational transconductance amplifier”Electronics Letters, IEE Stevenage, GB, vol. 36, No. 17, Aug. 17, 2000, pp. 1439-1440, XP006015598 ISSN: 0013-5194.

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