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A 2.7-V elliptical MOSFET-only C-gm-OTA filter
2000 (English)In: IEEE transactions on circuits and systems. 2, Analog and digital signal processing (Print), ISSN 1057-7130, E-ISSN 1558-125X, Vol. 47, no 2, 89-95 p.Article in journal (Refereed) Published
Abstract [en]

The g(m) C-operational transconductance amplifier (OTA) technique relaxes transconductor output swing and de-gain requirements; which makes it a suitable candidate for low-voltage circuits. To reduce the power consumption of OTA's, an excess phase-shift compensation with all automatic tuning circuit is used. A floating triode-region transconductor with a novel biasing to compensate the effect of channel-length modulation is presented. The two independent common-mode levels in a g(m) C-OTA integrator are utilized to bias a MOS as a linear capacitor. This enables the realization of the floating-transmission zero capacitors with a pure digital CMOS process. The implementation and the experimental results for a third-order 2.7-V all-MOS elliptical filter with 64-dB dynamic range and 0.1% linearity are presented.

Place, publisher, year, edition, pages
2000. Vol. 47, no 2, 89-95 p.
Keyword [en]
CMOS, continuous-time filters, low voltage, continuous-time filter
Identifiers
URN: urn:nbn:se:kth:diva-19577ISI: 000085521000001OAI: oai:DiVA.org:kth-19577DiVA: diva2:338269
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Ismail, Mohammed
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