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High-precision switched-capacitor integrator using low-gain opamp

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3 Author(s)
Yoshizawa, H. ; Dept. of Electron. Eng., Saitama Inst. of Technol., Saitama, Japan ; Yabe, T. ; Temes, G.C.

A high-precision switched-capacitor integrator using a low-gain opamp is proposed. The circuit contains a main signal path and a predictive signal path which makes the correlated double sampling more effective. The proposed integrator was simulated using SPICE parameters for a 180 nm CMOS process with a supply voltage of 1.2 V. The circuit exhibited much lower harmonic distortion than those described in earlier works.

Published in:

Electronics Letters  (Volume:47 ,  Issue: 5 )