Amplifier using delta-sigma modulation

Details Amplifier using delta-sigma modulation Amplifier using delta-sigma modulation

2006-02-14

2006-02-14

JeanPierre, Peguy (Department: 2819)

Amplifiers

Modulator-demodulator-type amplifier

C330S291000, C341S143000

Reexamination Certificate

active

06998910

ABSTRACT:
An amplifier and a driver circuit therefor are presented for driving a load according to a system analog input. The amplifier comprises a passive delta-sigma modulator with a passive filter providing a first filtered signal according to a passive filter input and according to a feedback signal, a quantizer coupled with the passive filter and providing a quantized output according to the first filtered signal, and a switching system coupled with the the passive filter and the quantizer. The switching system selectively providing power to a load according to the quantized output and provides the feedback signal to the passive input, wherein a gain amplifier is provided in a feedback loop around the passive delta-sigma modulator.

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