Digitally Programmable Fully Differential Filter
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Date
2011-12
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
In this paper a new digitally programmable voltage mode fully differential Kerwin-Huelsman-Newcomb(KHN) filter is realized using digitally controlled CMOS fully balanced output transconductor (DCBOTA). The realized filter uses five DCBOTAs, a single resistor and two capacitors. The filter provides low-pass, high-pass and band-pass responses simultaneously. The pole-frequency of all the responses is controlled by externally applying an 8- bit digital control word. All the responses exhibit independent digital control for pole-ω0 and pole-Q. The proposed filter also offers low passive sensitivities. Non-ideal gain and parasitic associated with the actual DCBOTA is also discussed. The CMMR results for low-pass response are also included which highlight the advantage of a fully-differential operation. Exhaustive PSPICE simulation is carried out using 0.5µ technology which may be further scaled to explore state-of-the-art applications of the proposed circuit.
Description
Citation
Radioengineering. 2011, vol. 20, č. 4, s. 917-925. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_04_917_925.pdf
http://www.radioeng.cz/fulltexts/2011/11_04_917_925.pdf
Document type
Peer-reviewed
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Published version
Date of access to the full text
Language of document
en