Class D amplifier and method

Details Class D amplifier and method Class D amplifier and method

1995-08-09

1997-09-30

Mottola, Steven

Amplifiers

Modulator-demodulator-type amplifier

330207A, H03F 338

Patent

active

056729987

ABSTRACT:
A Class D (audio) amplifier and method in which an input signal for the amplifier is pulse width modulated outside of the amplifier's feedback loop, and in which the pulse width modulated input signal and a pulsed signal from the feedback loop are summed in the feedback loop and fed back to the amplifier. The removal of the pulse width modulation stage and signal integration stage from the feedback loop improves distortion.

REFERENCES:
patent: 4390849 (1983-06-01), Miskin
patent: 4458208 (1984-07-01), Abe
patent: 4968948 (1990-11-01), Tokuno et al.

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