DocumentCode
771949
Title
Linearly Tunable CMOS OTA With Constant Dynamic Range Using Source-Degenerated Current Mirrors
Author
Barúqui, Fernando A P ; Petraglia, Antonio
Author_Institution
Electron. Dept., Univ. Fed. do Rio de Janeiro
Volume
53
Issue
9
fYear
2006
Firstpage
797
Lastpage
801
Abstract
This brief introduces a new operational transconductance amplifier (OTA) that maintains the input voltage-swing constant during gm adjustments, enabled by employing current mirrors with source degeneration. The OTA presents a wide gm tuning range, which is linearly accomplished through a variable current source. The key design steps are illustrated through an example, and simulation results are included to validate the theory
Keywords
CMOS analogue integrated circuits; current mirrors; operational amplifiers; CMOS integrated circuit; linearly tunable amplifier; operational transconductance amplifier; source-degenerated current mirror; Circuit optimization; Dynamic range; Filters; MOSFETs; Mirrors; Operational amplifiers; Resistors; Transconductance; Tuning; Voltage; Analog integrated circuits; CMOS integrated circuits; operational amplifier; transconductors; tunable amplifiers;
fLanguage
English
Journal_Title
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher
ieee
ISSN
1549-7747
Type
jour
DOI
10.1109/TCSII.2006.881162
Filename
1705042
Link To Document