Circuit arrangement having an amplifier arrangement and an...

Details Circuit arrangement having an amplifier arrangement and an... Circuit arrangement having an amplifier arrangement and an...

2008-07-29

2008-07-29

Choe, Henry K (Department: 2817)

Amplifiers

With periodic switching input-output

C330S136000

Reexamination Certificate

active

11417495

ABSTRACT:
A circuit arrangement is disclosed herein comprising an amplifier circuit having inputs configured to receive an input signal, and an output configured to provide an output signal. The circuit arrangement further comprises a first operational amplifier. The first operational amplifier includes inputs coupled to the inputs of the amplifier circuit, an output coupled to the output of the amplifier circuit, and a first compensation input. The compensation input is configured to feed an offset compensation signal to the first operational amplifier. The circuit arrangement further comprises a first compensation circuit configured to provide the offset compensation signal. The first compensation circuit is coupled to the inputs of the first operational amplifier. The circuit arrangement further comprises a deactivation circuit which is designed to temporarily deactivate the first compensation circuit.

REFERENCES:
patent: 5047727 (1991-09-01), Theus
patent: 6653895 (2003-11-01), Douts et al.
patent: 7265615 (2007-09-01), Alexander et al.
patent: 7271649 (2007-09-01), Chiu et al.
Finvers, Ivars G. and Haslett, J.W., “A High Temperature Precision Amplifier.”IEEE Journal of Solid-State Circuits, vol. 30, Feb. 1995, pp. 120-128. (9 Pages).

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