Please use this identifier to cite or link to this item: https://doi.org/10.1109/81.817382
Title: A low-voltage CMOS OTA with rail-to-rail differential input range
Authors: Li, M.F. 
Dasgupta, U.
Zhang, X.W.
Lim, Y.C. 
Issue Date: Jan-2000
Source: Li, M.F., Dasgupta, U., Zhang, X.W., Lim, Y.C. (2000-01). A low-voltage CMOS OTA with rail-to-rail differential input range. IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 47 (1) : 1-8. ScholarBank@NUS Repository. https://doi.org/10.1109/81.817382
Abstract: This paper describes a novel circuit design technique for a low-voltage CMOS operational transconductance amplifier (OTA) where the output current versus the input voltage relationship is linear for differential input voltage range extended from rail to rail. The input transconducting CMOS transistors operate in the nonsaturation region. A pair of complementary n-type input OTAN and p-type OTAP circuits in conjunction with n-MOS and p-MOS output current mirrors are connected in parallel to implement the rail-to-rail voltage input and push-pull current output. The transconductances gmn and gmp of the OTAN and the OTAP are tuned by biasing voltages VDSN and VDSP, respectively. A masterbias generator (with VDSP as input) is used to generate VDSN as output so as to satisfy gmn = gmp. The circuit is capable of operating at supply voltage larger than two times the MOS transistor threshold voltage VT. When the supply voltage is 2 V and the MOS transistor threshold voltage is 0.7 V, using SPICE level 3-2 μm CMOS technology device parameters, the simulation result of the output current deviation from perfect linearity is less than 0.3% for rail-to-rail differential input voltage range. © 2000 IEEE.
Source Title: IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/80274
ISSN: 10577122
DOI: 10.1109/81.817382
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

18
checked on Feb 14, 2018

WEB OF SCIENCETM
Citations

12
checked on Jan 16, 2018

Page view(s)

32
checked on Feb 18, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.