Multi-channel power amplifier self-configuring to a bridge...

Amplifiers – With semiconductor amplifying device – Including class d amplifier

Reexamination Certificate

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C330S20700P

Reexamination Certificate

active

10865030

ABSTRACT:
In a multi-channel amplifier switching from a single-ended to a bridge configuration, one of the two operational amplifiers of the output bridge structure of each channel is kept at the design reference voltage (typically to half the supply voltage) for as long as the other operational amplifier of the output bridge structure does not begin to saturate and by connecting in common the gate nodes of the P-type MOS transistors and the gate nodes of the N-type MOS transistors of the output half bridge stages of all the operational amplifiers of the output bridge pairs of all the channels that are eventually configured to function as voltage reference buffer, when configuring the multi channel amplifier to function in a single-ended configuration.

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