Title :
Switched-capacitor body-biasing technique for very low voltage CMOS amplifiers
Author :
Monsurrò, Pietro ; Pennisi, Salvatore ; Scotti, Giuseppe ; Trifiletti, Alessandro
Author_Institution :
Dipt. di Ingegneria Elettronica, Rome "La Sapienza" Univ., Italy
fDate :
28 Aug.-2 Sept. 2005
Abstract :
A biasing scheme for minimum supply CMOS amplifiers is presented. The approach exploits the bulk terminals to set the quiescent current of a pseudo differential amplifier, thereby avoiding the use of the tail current source. Nonideal effects of the switched-capacitor network used in the feedback control loop are also theoretically examined. Transistor-level simulations on a design powered with 0.7V show that the obtained performance is comparable to that of a traditional differential pair supplied with 1V.
Keywords :
CMOS analogue integrated circuits; amplifiers; low-power electronics; switched capacitor networks; 0.7 V; bulk terminals; feedback control loop; pseudo differential amplifier; quiescent current; switched-capacitor body-biasing technique; switched-capacitor network; tail current source; very low voltage CMOS amplifier; Batteries; CMOS technology; Differential amplifiers; Dynamic range; Energy consumption; Feedback control; Low voltage; Switched capacitor networks; Tail; Transconductance;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1522959
