Title :
2 V fully-differential SC integrator in standard CMOS
Author :
Crapanzano, S. ; Johns, D.A.
Author_Institution :
PMC-Sierra Inc., Burnaby, BC, Canada
fDate :
11/9/1995 12:00:00 AM
Abstract :
A 2 V fully-differential SC integrator is developed for a standard double-poly CMOS without the need for clock or supply-voltage multiplication. The common mode at the integrator output is set to maximise the signal swing, and the common mode at the input to the OTA is set at the negative rail, maximising the overdrive on all the switches. Two capacitive common-mode adjustment networks are required to alleviate large leakage currents associated with parasitic junction diodes. A novel CMFB technique is proposed. Simulation results are presented for a 1.2 μm CMOS process
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; circuit feedback; integrating circuits; operational amplifiers; switched capacitor networks; 1.2 micron; 2 V; CMOS IC; OTA; capacitive common-mode adjustment networks; common-mode feedback; double-poly CMOS process; fully-differential SC integrator; leakage currents; op amp; parasitic junction diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19951379
