CMOS operational amplifiers with continuous-time capacitive common mode feedback

A simple and power efficient approach for the implementation of continuous-time common mode feedback networks using a capacitive averaging network is introduced. It is shown that low voltage, continuous-time, fully differential rail to rail operation can be achieved using the proposed technique. Thi...

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Bibliographic Details
Main Authors: Ramírez-Angulo, Jaime, Nargis, A, Carvajal, Ramón G, López-Martín, Antonio
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Capacitors
Circuits
CMOS technology
Feedback
Hardware
Low voltage
Operational amplifiers
Power dissipation
Signal to noise ratio
Online Access:Request full text
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Description
Summary:A simple and power efficient approach for the implementation of continuous-time common mode feedback networks using a capacitive averaging network is introduced. It is shown that low voltage, continuous-time, fully differential rail to rail operation can be achieved using the proposed technique. This at the expense of very small additional hardware and no additional power dissipation One stage, two stage, telescopic and folded cascode op-amps are discussed as application examples.
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2010.5537266