Title :
Stray insensitive implementation of programmable switched capacitor amplifiers
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA, USA
fDate :
30 May-2 Jun 1994
Abstract :
A CMOS custom integrated circuit featuring digitally programmable switched capacitor operational amplifiers is presented. The OP AMPs realized are based on the composite OP AMPs, previously introduced by the author and known for their extended bandwidth and reduced active and passive sensitivities. For proof of concept, a CMOS chip was designed and manufactured featuring four different switched capacitor composite OP AMPs, and based on a stray insensitive design. Experimental results of the 40 pin prototype chip verified the design concept that was demonstrated theoretically and using SPICE simulation. The results clearly demonstrate the enhanced characteristics of these family of composite OP AMPs when utilized in different applications
Keywords :
CMOS analogue integrated circuits; SPICE; application specific integrated circuits; operational amplifiers; switched capacitor networks; CMOS custom integrated circuit; SPICE simulation; active sensitivity; bandwidth; composite OP AMPs; digitally programmable switched capacitor operational amplifiers; passive sensitivity; stray insensitive design; Bandwidth; Circuit simulation; Frequency; MOS capacitors; Operational amplifiers; Resistors; Switched capacitor circuits; Switched capacitor networks; Switching circuits; Voltage control;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409441
