FGMOS-based NMC-RC frequency compensation differential amplifier for low power low voltage applications
Document Type
Conference Item
Publication Date
5-1-2012
Abstract
This paper presents how to add flexibility to reduce the overall power consumption in a CMOS operational amplifier by replacing few MOS transistors with floating gate MOSFET (FGMOS). The disadvantages of doing this are also discussed. The performance of the proposed circuit using unity gain bandwidth (GBW) and slew rate (SR) as figure of merit is presented. The Nested Miller compensation (NMC) is used and the pole is positioned far away from first pole in frequency spectrum for frequency compensation resulting. The zero from RC network is also matched to the non-dominant pole at the left-side of the Nyquist plot of the loop to increase stability and control the bandwidth operation. The circuit operates with a voltage supply of 0.5V and has 26.7uW power consumption.
Keywords
FGMOS, NMC-RC Frequency Compensation, CMOS operational amplifiers, FGMOS, Figure of merits, Floating gate MOSFET, Frequency compensation, Frequency spectra, Low Power, Nested miller compensation, Nyquist plots, RC networks, Slew rate, Stability and control, Unity-gain bandwidth, Voltage supply
Divisions
fac_eng
Event Title
2012 1st International Conference on Informatics, Electronics and Vision, ICIEV 2012
Event Location
Dhaka, Bangladesh
Event Dates
18-19 May 2012
Event Type
conference
Additional Information
ISBN: 978-146731151-9 DOI: 10.1109/ICIEV.2012.6317420