Low delay, low power and high linearity class-D modulation loop

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United States of America Patent

PATENT NO 11368132
APP PUB NO 20210203286A1
SERIAL NO

17119978

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Abstract

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Systems and methods include a circuit having a plurality of integrator circuits arranged in series and configured to receive an input signal at a first of the plurality of integrators and generate an output signal at a last of the plurality of integrators, a filter arranged to receive a feedback signal comprising the output signal and generate a filtered feedback signal, which is applied to the input signal before input to the first of the plurality of integrators, and a feedback signal path configured to receive the feedback signal and apply the feedback signal to an input of a second of the plurality of integrators. The circuit may include a class-D amplifier and/or a delta-sigma modulator. The input signal may include an analog audio signal that is amplifier to drive an audio speaker.

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  • SYNAPTICS INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Crespi, Lorenzo Irvine, US 49 251
Shen, Dan Irvine, US 69 527
Zhang, Yunfu Sichuan Sheng, CN 3 0

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