Title :
Current output stage with improved CMRR
Author :
Centurelli, F. ; Pennisi, S. ; Trifiletti, A.
Author_Institution :
Dipt. di Ingegncria Elettronica, Univ. di Roma, Italy
Abstract :
A technique to increase the common-mode rejection ratio of traditional current output stage is presented. The solution exploits an auxiliary high-gain feedback loop which also approximately doubles the differential transconductance. SPICE simulations using the model parameters of a 0.8-μm CMOS process arc found in remarkable agreement with expected results.
Keywords :
CMOS analogue integrated circuits; SPICE; feedback amplifiers; operational amplifiers; CMOS process; SPICE simulations; auxiliary high-gain feedback loop; common-mode rejection ratio; complementary source-coupled pairs; current operational amplifiers; current output stage; differential transconductance; model parameters; CMOS process; Capacitors; Circuits; Differential amplifiers; Feedback loop; Operational amplifiers; SPICE; Semiconductor device modeling; Transconductance; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1301842
