A Digital Capacitance Comparator
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概要
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The novel switched-capacitor interface circuit called digital capacitance comparator which converts from the deviation between the value of reference capacitance and the unknown value of capacitance, manufactured in a factory, to output frequency is proposed. Whole circuit operation is insensitive to the parasitic resistance connected pararell with the capacitor under comparating, and offset voltages and open loop gains of op-amps. Parasitic capacitances between each node and ground and clock feedthrough charge caused by analog switches can also be easily calibrated. Therefore, proposed interface can be operated exactly.
- 沼津工業高等専門学校の論文
- 1990-01-30
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関連論文
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