Amplifiers – Modulator-demodulator-type amplifier
Patent
1997-06-04
2000-01-18
Mottola, Steven J.
Amplifiers
Modulator-demodulator-type amplifier
330251, H03F 338
Patent
active
060160756
ABSTRACT:
A Class-D amplifier using an audio signal input structure with monolithic devices forming integrated circuit configurations to receive audio input signals to be amplified. One monolithic device used to couple audio input ports to receive respective audio input signals to be amplified and feedback network to receive feedback signals is a pulse-width-modulator. Another monolithic device is used to form an integrated circuit with a pulse-width-modulated square wave input ports. Field effect transistor driver circuits are connected to respective pulse-with-modulated square wave signal input ports. Filter circuits coupled to the integrated circuits are used to receive and filter the amplified square wave signals and produce continuous amplified audio signals.
REFERENCES:
patent: 4178556 (1979-12-01), Attwood
patent: 4346349 (1982-08-01), Yokoyama
patent: 4524335 (1985-06-01), Yokoyama
patent: 5131047 (1992-07-01), Hashimoto et al.
patent: 5410592 (1995-04-01), Wagner et al.
patent: 5523715 (1996-06-01), Schrader
patent: 5574405 (1996-11-01), Razavi
patent: 5802184 (1998-09-01), Heath
Article entitled "Class D Amplifiers Provide High Efficiency For Audio Systems", by Jeffrey D. Sherman, published in EDN, May 25, 1995.
Circuitry design for "TL493, TL494, TL495 Pulse-Width-Modulation Control Circuits", published by Texas Instruments, D2535, Jan. 1983, revised Oct. 1988.
Lord Corporation
Mottola Steven J.
LandOfFree
Class-D amplifier input structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Class-D amplifier input structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Class-D amplifier input structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-565498