Title :
Active compensation in the switched-capacitor biquad
Author :
Sasikumar, M. ; Rao, K. Radhakrishna ; Reddy, M.A.
Author_Institution :
Indian Institute of Technology, Madras, India
Abstract :
One of the limiting factors in the performance of high-ωpand high-Qpactive filters is the finite frequency-dependent gain characteristics of operational amplifiers (op-amps). Investigated here is a simple compensation scheme to reduce the sensitivity of the performance of a switched-capacitor biquad to the finite gain-bandwidth product of the op-amps. Theoretical and experimental results show that the scheme is very useful.
Keywords :
Capacitors; Circuit analysis; Clocks; Feedback circuits; Feedback loop; Filters; Frequency; Operational amplifiers; Switching circuits; Transfer functions;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1983.12703
