Differential input Class D amplifier

Details Differential input Class D amplifier Differential input Class D amplifier

2006-08-17

2008-11-04

Choe, Henry K (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S251000

Reexamination Certificate

active

07446603

ABSTRACT:
A differential input Class D audio power amplifier incorporating a differential error amplifier is introduced. In response of differential input signal, this differential error amplifier generates two error signals, which subsequently generates final output signal. This architecture makes it the effect of feedback signal error correction doubled, which helps in achieving good THD. In addition, input port of this architecture is also compatible with single-ended signal. A pop noise suppression technique for this differential input Class D audio power amplifier is also introduced.

REFERENCES:
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patent: 5767740 (1998-06-01), Fogg
patent: 5815581 (1998-09-01), Andersson
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patent: 6614297 (2003-09-01), Score et al.
patent: 7068095 (2006-06-01), Bernardon
patent: 7295063 (2007-11-01), Kurokawa

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