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A Switched-Capacitor Capacitance Measurement Circuit with the Vernier Scale
Kazuyuki KONDO Kenzo WATANABE
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/25
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
switched-capacitor circuits, capacitance measurement, A-D conversion, interpolation,
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To improve measurement accuracy and speed, a switched-capacitor capacitance measurement circuit with the vernier scale is developed. Its process consists of a coarse measurement by charge-balancing A-D conversion and a fine measurement by single-slope A-D conversion. a prototype using discrete components confirms the principles of operation.