US Patent 7463087 Operational amplifier with zero offset
Patent 7463087 was granted and assigned to International Rectifier (company) on December, 2008 by the United States Patent and Trademark Office.
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A circuit for minimizing a voltage offset between inverting and non-inverting input terminals of an operational amplifier circuit is provided. The circuit includes a chopper circuit connected to the inverting and non-inverting input terminals of the operational amplifier circuit, the chopper circuit including: an amplifier having differential outputs; and a switching circuit for periodically reversing the input terminals to the amplifier and periodically reversing the outputs of the amplifier to provide an output signal having an offset adjustment signal to the operational amplifier circuit to adjust the offset of the operational amplifier circuit.
US Patent 07463087 Operational amplifier with zero offset US Patent 7463087 Operational amplifier with zero offset
US Patent 07463087 Operational amplifier with zero offset
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