CMOS Transconductors With Nearly Constant Input Ranges Over Wide Tuning Intervals

Three different bias strategies aimed to reduce the effect of tuning on either the differential input range or the common-mode range of triode-region CMOS transconductors are presented. The method is applied to an original transconductor topology that is optimized to produce ultralow G m values. A p...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. 2, Analog and digital signal processing Analog and digital signal processing, 2006-10, Vol.53 (10), p.1002-1006
Main Authors: Bruschi, P., Sebastiano, F., Nizza, N.
Format: Article
Language:English
Subjects:
Bias
Chemical sensors
Circuit optimization
Circuit simulation
Circuits
CMOS
CMOS transconductor
constant input range
Intervals
Low pass filters
low-frequency filters
Mirrors
MOSFETs
Optimization methods
Simulation
Stability
Strategy
Topology
Transconductors
Tuning
Voltage
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Summary:Three different bias strategies aimed to reduce the effect of tuning on either the differential input range or the common-mode range of triode-region CMOS transconductors are presented. The method is applied to an original transconductor topology that is optimized to produce ultralow G m values. A prototype circuit, which was designed with the 0.35-mum bipolar-CMOS-DMOS (BCD6) process of STMicroelectronics, is presented. The effectiveness and limitations of the method are characterized by means of electrical simulations
ISSN:1549-7747
1057-7130
1558-3791
DOI:10.1109/TCSII.2006.882126