An Ultra-Low-Voltage Ultra-Low-Power CMOS Miller OTA With Rail-to-Rail Input/Output Swing

An ultra-low-voltage ultra-low-power CMOS Miller operational transconductance amplifier (OTA) with rail-to-rail input/output swing is presented. The topology is based on combining bulk-driven differential pair and dc level shifters, with the transistors work in weak inversion. The improved Miller OT...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 54; no. 10; pp. 843 - 847
Main Authors Ferreira, L.H.C., Pimenta, T.C., Moreno, R.L.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2007
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Bulk-driven differential pair
Circuits
CMOS
CMOS process
Consumption
Differential amplifiers
Electric potential
full swing
Miller operational transconductance amplifier (OTA)
operational amplifier
Operational amplifiers
Power supplies
rail to rail
Rail to rail amplifiers
Rail to rail inputs
Rail to rail operation
Swing
Threshold voltage
Topology
Transconductance
ultra-low-voltage and ultra-low-power circuits
Voltage
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Summary:An ultra-low-voltage ultra-low-power CMOS Miller operational transconductance amplifier (OTA) with rail-to-rail input/output swing is presented. The topology is based on combining bulk-driven differential pair and dc level shifters, with the transistors work in weak inversion. The improved Miller OTA has been successfully verified in a standard 0.35-mum CMOS process. Experimental results have confirmed that, at a minimum supply voltage of 600 mV, lower than the threshold voltage, the topology presents almost rail-to-rail input and output swings and consumes only 550 nW.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2007.902216