DocumentCode :
1459989
Title :
Low-voltage CMOS op-amp with rail-to-rail input and output signal swing for continuous-time signal processing using multiple-input floating-gate transistors
Author :
Ramirez-Angulo, J. ; Carvajal, R.G. ; Tombs, J. ; Torralba, A.
Author_Institution :
Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Volume :
48
Issue :
1
fYear :
2001
fDate :
1/1/2001 12:00:00 AM
Firstpage :
111
Lastpage :
116
Abstract :
A scheme for low-voltage CMOS op-amp operation with rail-to-rail input and output signal swing and constant gm is presented. Single-ended and fully differential versions are discussed. The scheme is based on the use of multiple-input floating-gate transistors and allows direct implementation of linear weighted addition of continuous-time signals. Simulations are presented that verify the scheme operating with a 1.2-V single supply, 1.2-V input and output solving, 5-MHz op-amp gain-bandwidth product, and a 192-μW power dissipation with a 50-pF load and 300×300 μm2 silicon area. These results are obtained for 0.85-V transistor threshold voltages. Experimental results are shown that verify the correct functionality of the proposed approach
Keywords :
CMOS analogue integrated circuits; continuous time systems; low-power electronics; operational amplifiers; 0.85 V; 1.2 V; 192 muW; 50 pF; constant gm; continuous-time signal processing; fully differential versions; functionality; linear weighted addition; low-voltage CMOS op-amp; multiple-input floating-gate transistors; op-amp gain-bandwidth product; power dissipation; rail-to-rail input/output signal swing; threshold voltages; Analog circuits; CMOS analog integrated circuits; CMOS process; MOSFETs; Operational amplifiers; Power dissipation; Rail to rail inputs; Signal processing; Silicon; Threshold voltage;
fLanguage :
English
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1057-7130
Type :
jour
DOI :
10.1109/82.913195
Filename :
913195
Link To Document :
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