Differential amplifiers with enhanced gain and controlled...

Details Differential amplifiers with enhanced gain and controlled... Differential amplifiers with enhanced gain and controlled...

2006-11-21

2006-11-21

Nguyen, Linh (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S253000

Reexamination Certificate

active

07138865

ABSTRACT:
Differential amplifiers are provided with a common-mode controller that establishes an amplifier common-mode output level while it also enhances amplifier gain and output impedance. The amplifier includes cascode transistors and the controller includes positive-feedback transistors that respond to an output side of the cascode transistors and negative-feedback transistors that respond to an input side of the cascode transistors. Gain and output impedance are increased by the positive-feedback transistors and the increase is controlled by the negative-feedback transistors. Common-mode level is established by voltages between current and control terminals of the positive-feedback transistors. The differential amplifiers are shown to be especially suited for use in switched-capacitor structures.

REFERENCES:
patent: 5525930 (1996-06-01), Pothast et al.
patent: 5530444 (1996-06-01), Tice et al.
patent: 5703532 (1997-12-01), Shin et al.
patent: 5933056 (1999-08-01), Rothenberg
patent: 5963084 (1999-10-01), Eschauzier
patent: 6172636 (2001-01-01), Murden et al.
patent: 6486820 (2002-11-01), Allworth et al.
patent: 6556081 (2003-04-01), Muza
patent: 6577184 (2003-06-01), Kwan et al.
patent: 6778013 (2004-08-01), Ali
patent: 6825724 (2004-11-01), Jaussi
patent: 6985035 (2006-01-01), Khorramabadi
Razavi, Behzad, “Design of Analog CMOS Integrated Circuits”, 2001, McGraw-Hill Corporation, New York, NY, pp. 314-324, no month.
Gray, Paul, et al., “Analysis and Design of Analog Ingegrated Circuits”, 2001, John Wiley & Sons, fourth edition, pp. 824-832, no month.

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