Single ended class-D amplifier with dual feedback loop scheme

Details Single ended class-D amplifier with dual feedback loop scheme Single ended class-D amplifier with dual feedback loop scheme

2011-07-19

2011-07-19

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

Reexamination Certificate

active

07982536

ABSTRACT:
A single-ended class-D amplifier with dual feedback loop scheme has a gain adjusting circuit, a second-order integrator, two comparators, a logic circuit, an output driver and an inverter. The output driver cooperates with the inverter to produce a differential signal. The differential signal is input to the second-order integrator to construct a dual feedback differential loop to eliminate noise of output signals of the class-D amplifier, and offer enhanced signal to noise and distortion ratio (SNDR).

REFERENCES:
patent: 6998910 (2006-02-01), Hezar et al.
patent: 2007/0069814 (2007-03-01), Giotta et al.

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