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Clock-feedthrough compensated switched-capacitor circuits

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2 Author(s)
Ogawa, S. ; Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan ; Watanabe, K.

Novel switched-capacitor circuits are presented which greatly suppress the clock-feedthrough effect. The principle is based on the cancellation of feedthrough charges stored in two capacitors. The circuit is also insensitive to parasitic capacitances and offset voltages of the op amps, and thus allows accurate analogue signal processing. Experimental waveforms are also given to demonstrate its validity.

Published in:

Electronics Letters  (Volume:27 ,  Issue: 22 )