An Efficient Oscillator Design Based on OTA Nonlinearity

An analog sinusoidal oscillator usually involves some form of amplitude-limiting mechanism. We examine OTA nonlinearity as a choice for amplitude limiting, and introduce a general method for its use in OTA-C oscillators. We illustrate our discussion with an example design that we fabricated and test...

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Bibliographic Details
Published in2007 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 921 - 924
Main Authors Odame, Kofi M., Hasler, Paul
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2007
Subjects
Analog computers
Attenuation
Circuits
Design engineering
Limiting
Nonlinear distortion
Oscillators
Transconductance
Transfer functions
Voltage
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Summary:An analog sinusoidal oscillator usually involves some form of amplitude-limiting mechanism. We examine OTA nonlinearity as a choice for amplitude limiting, and introduce a general method for its use in OTA-C oscillators. We illustrate our discussion with an example design that we fabricated and tested. Our results show that OTA nonlinearity yields low-distortion oscillators at practically no power- or area cost.
ISBN:1424409209
9781424409204
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2007.378076