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Comparator having an offset voltage cancellation circuit
Comparator having an offset voltage cancellation circuit
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机译:具有失调电压消除电路的比较器
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摘要
A comparator including an operational amplifier, includes: a first comparator (CMP1) ; an input switching circuit (A) for passing an input signal in one state wherein a comparison is effected and for interrupting the input signal in another state wherein an input offset voltage is cancelled, in the comparator (CMP1); an output switching circuit (B) for holding an output signal in one state and for outputting a held output signal in the other state of the input switching circuit; and an input/output switching signal generation circuit (C) for generating control signals to switch between the one state and the other state; the first comparator (CMP1) outputting resultant comparison data in the one state and cancelling the input offset voltage in the other state.
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