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US4743872A Switched capacitor circuit 失效
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Switched capacitor circuit
摘要:
A switched capacitor circuit comprises first and second switches connected in series between an input terminal and a first fixed potential terminal and third and fourth switches connected in series between an output terminal and the first fixed potential terminal. The group of the first and fourth switches and the group of the second and third switches are alternately rendered conducting and nonconducting. Two serial capacitors are connected between the junction of the first and second switches and the junction of the third and fourth switches and one parallel capacitor is connected between the junction of the two serially connected capacitors and the first fixed potential. The common junction of the three capacitors is connected to a second fixed potential terminal through a highly resistive element.
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