DocumentCode :
3334631
Title :
Low-voltage CMOS cross-quad implementation based on dynamic positive feedback
Author :
Calvo, B. ; Ramirez-Angulo, J. ; Lopez-Martin, A. ; Carvajal, R.G.
Author_Institution :
Group of Electron. Design (I3A), Univ. of Zaragoza, Zaragoza, Spain
fYear :
2009
fDate :
2-5 Aug. 2009
Firstpage :
17
Lastpage :
20
Abstract :
This paper presents the implementation of a cross-quad circuit suitable for low-voltage operation. The proposed cell exploits a dynamic positive feedback gm boosting technique to achieve linear voltage-to-current conversion, while it manages to work with low-voltage with no extra bias current and minimal additional hardware. Results for a 0.5 mum CMOS implementation supplied at 3 V show a 0.972% voltage-to-current accuracy, improving the 0.867% accuracy of a previously reported cross-quad topology also suitable for low-voltage operation which is based on folded transistors.
Keywords :
CMOS integrated circuits; circuit feedback; low-power electronics; network topology; boosting technique; cross-quad circuit topology; dynamic positive feedback; folded transistor; linear voltage-to-current conversion; low-voltage CMOS cross-quad implementation; size 0.5 mum; voltage 3 V; Boosting; CMOS process; Design engineering; Feedback circuits; Linearity; Resistors; State feedback; Topology; Transconductance; Voltage; cross-quad; dynamic positive feedback; linear V-I converter; low-voltage CMOS design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on
Conference_Location :
Cancun
ISSN :
1548-3746
Print_ISBN :
978-1-4244-4479-3
Type :
conf
DOI :
10.1109/MWSCAS.2009.5236162
Filename :
5236162
Link To Document :
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