DocumentCode
3367907
Title
Residual offset optimization for a continuous time autozero amplifier
Author
Danchiv, Andrei ; Bodea, Mircea
Author_Institution
Infineon Technol. Romania, Bucharest
fYear
2008
fDate
14-17 Sept. 2008
Firstpage
281
Lastpage
284
Abstract
In this paper, a continuous time autozero (AZ) amplifier topology is presented. To improve offset cancellation, a fully differential internal AZ loop is used. An analytical model is developed for estimating the residual offset during both operation phases; taking into account the main offset contributions: base and cancellation amplifiers offset voltages and respectively charge injection. The design considerations for achieving optimal residual offset are presented.
Keywords
differential amplifiers; cancellation amplifiers offset voltage; charge injection; continuous time autozero amplifier topology; differential internal AZ loop; offset cancellation; residual offset optimization; Analytical models; Circuit topology; Feedback loop; Operational amplifiers; Phase estimation; Signal processing; Signal sampling; Switches; Virtual colonoscopy; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Signals and Electronic Systems, 2008. ICSES '08. International Conference on
Conference_Location
Krakow
Print_ISBN
978-83-88309-47-2
Electronic_ISBN
978-83-88309-52-6
Type
conf
DOI
10.1109/ICSES.2008.4673415
Filename
4673415
Link To Document