Title :
Charge-pump based switched-capacitor gain stage
Author :
Nilchi, Alireza ; Johns, David A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
A low-power switched-capacitor (SC) gain stage based on a capacitive charge-pump (CP) is proposed. It is shown that the CP gain stage achieves the same input-referred thermal noise as a conventional SC gain circuit, while consuming significantly lower power. The effect of parasitic capacitances on the CP gain circuit is discussed. Simulation results confirming the improved power/performance trade-off of the CP gain stage over the conventional approach are provided.
Keywords :
charge pump circuits; low-power electronics; switched capacitor networks; thermal noise; capacitive charge pump; low power switched capacitor gain stage; parasitic capacitance; performance trade-off; thermal noise; Capacitance; Capacitors; Gain; Noise; Power demand; Thermal noise; Transconductance;
Conference_Titel :
Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on
Conference_Location :
Boise, ID
Print_ISBN :
978-1-4673-2526-4
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2012.6292018
