Accuracy‐enhanced switched‐capacitor stages using low‐gain opamps | Zendy

Zhang Y. | Zendy; Chen C.H. | Zendy; Temes G.C. | Zendy

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Accuracy‐enhanced switched‐capacitor stages using low‐gain opamps

Author(s) -

Zhang Y.,

Chen C.H.,

Temes G.C.

Publication year - 2013

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2012.3827

Subject(s) - switched capacitor , operational amplifier , capacitor , electronic engineering , electrical engineering , computer science , engineering , voltage , amplifier , cmos

A charge compensation technique is proposed for switched capacitor stages with low‐gain opamps. It cancels the error charge flow during the operation phase, thus enhancing the accuracy. A capacitive T‐network can be employed to implement the resulting large capacitor ratio. A switched‐capacitor integrator and a sample‐and‐hold stage were designed and simulated to verify the proposed technique.

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