CPC G01R 19/0023 (2013.01) [H03F 1/0227 (2013.01); H03F 3/2173 (2013.01); H04R 3/00 (2013.01); H03F 2200/03 (2013.01); H03F 2200/462 (2013.01); H03F 2200/481 (2013.01)] | 22 Claims |
1. An audio system with an H-bridge amplifier for driving a speaker, the audio system comprising:
a first path coupled between a first voltage rail and an audio output for coupling to the speaker, the first path including a first switch coupled in series with a first sense element;
a second path coupled between the audio output for coupling to the speaker and a second voltage rail, the second path including a second switch coupled in series with a second sense element;
a voltage-to-current circuit coupling the first and second sense elements; and
one or more configurable circuit elements coupled to one or more output nodes of the voltage-to-current circuit.
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