Title :
High-precision switched-capacitor integrator using low-gain opamp
Author :
Yoshizawa, Hirokazu ; Yabe, Tatsuro ; Temes, Gabor C.
Author_Institution :
Dept. of Electron. Eng., Saitama Inst. of Technol., Saitama, Japan
Abstract :
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.
Keywords :
CMOS analogue integrated circuits; harmonic distortion; operational amplifiers; switched capacitor networks; CMOS process; SPICE parameters; harmonic distortion; high-precision switched-capacitor integrator; low-gain opamp; predictive signal path; size 180 nm; voltage 1.2 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3342
