Semiconductor devices

Abstract

This invention provides a semiconductor device capable of correcting variations caused by temperature drift in the offset voltage output of an amplifier circuit. The semiconductor device includes: an amplifier circuit having an input terminal connected to a detection element; an operational circuit connected to the output terminal of the amplifier circuit; and a control circuit connected to the output side of the operational circuit, controlling the amplifier circuit while repeating a control cycle. The control circuit is capable of switching between a first operating state where the amplifier circuit outputs an offset voltage and a second operating state where the amplifier circuit outputs a voltage amplified from the voltage input to the input terminal. During the control cycle, after switching the amplifier circuit to the first operating state and the second operating state, the operational circuit performs its calculations.

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