Amplifier with low pass filter feedback

Details Amplifier with low pass filter feedback Amplifier with low pass filter feedback

2005-10-25

2009-06-23

Shingleton, Michael B (Department: 2815)

Amplifiers

Signal feedback

Amplifier in signal feedback path

C330S254000, C330S260000, C327S307000

Reexamination Certificate

active

07551023

ABSTRACT:
An amplifier is described which amplifies an input signal according to a defined amplification factor, and which generates an output signal. To reduce an offset fraction of the output signal the amplifier comprises a feedback path which has lowpass characteristics and which returns the output signal in a lowpass-filtered state to an input of the amplifier. The feedback path comprises an amplifier stage as well as at least one Miller capacitance connected between an input and an output of the amplifier stage.

REFERENCES:
patent: 4785237 (1988-11-01), Cox
patent: 6903593 (2005-06-01), Wang
patent: 2006/0097782 (2006-05-01), Ebner
Lundberg, Kent H., “Internal and External Op-Amp Compensation: A Control-Centric Tutorial”, Proceeding of the 2004 American Control Conference, Boston, MA, Jun. 30-Jun. 2, 2004, AACC, pp. 5197-5211.

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