DocumentCode
2540901
Title
Slew rate induced distortion in switched-resistor integrators
Author
Jiraseree-amornkun, A. ; Worapishet, Apisak ; Klumperink, Eric A. M. ; Nauta, B. ; Surakampontorn, W.
Author_Institution
Fac. of Eng. & Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol., Bangkok
fYear
2006
fDate
21-24 May 2006
Lastpage
2488
Abstract
Opamp-RC integrators built with linear resistors and capacitors can achieve very high linearity. By means of a switched resistor, tuning of the RC time-constant is possible via the duty-cycle of the clock controlling the switched resistor. This paper analyzes the effect of opamp slew rate limitations on the distortion of a switched-resistor lossy opamp-RC integrator. We show via analysis and simulations that the use of two sets of switched resistors instead of one relaxes the opamp slew rate requirements, and reduces the resulting distortion significantly
Keywords
active filters; distortion; integrating circuits; operational amplifiers; opamp-RC integrators; slew rate induced distortion; switched-resistor integrators; Capacitors; Clocks; Linearity; Nonlinear filters; Passive filters; Rate distortion theory; Resistors; Switches; Switching circuits; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location
Island of Kos
Print_ISBN
0-7803-9389-9
Type
conf
DOI
10.1109/ISCAS.2006.1693127
Filename
1693127
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