Title :
SC networks with zero amplifier finite gain sensitivity
Author :
Qian, Zhang ; Shen, Zhi-Guang
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., China
Abstract :
A compensation method is proposed which eliminates the operational amplifier (OA) finite-gain effect completely in discrete switched-capacitor (SC) integrators. The transfer functions of nearly all stray-insensitive two-phase SC networks can be made to have zero sensitivity to OA gains. At the same time, DC error voltage and low-frequency noise components of the amplifier can be eliminated or reduced dramatically. The technique simplifies amplifier design and increases the high-frequency capability of SC networks
Keywords :
compensation; switched capacitor networks; DC error voltage; SC integrators; SC networks; compensation method; finite gain compensation method; finite-gain effect; high-frequency capability; low-frequency noise components; offset voltages; simplifies amplifier design; stray-insensitive; two-phase SC networks; zero amplifier finite gain sensitivity; zero sensitivity; Capacitors; Clocks; Difference equations; Differential amplifiers; Filters; Low voltage; Low-frequency noise; Low-noise amplifiers; Operational amplifiers; Transfer functions;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo
DOI :
10.1109/ISCAS.1988.15387
