ACCURATE AND ROBUST + -NV(T) EXTRACTOR

Citation
Jf. Duquecarrillo et al., ACCURATE AND ROBUST + -NV(T) EXTRACTOR, Electronics Letters, 29(4), 1993, pp. 420-422
Citations number
3
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
ISSN journal
00135194
Volume
29
Issue
4
Year of publication
1993
Pages
420 - 422
Database
ISI
SICI code
0013-5194(1993)29:4<420:AAR+-E>2.0.ZU;2-A
Abstract
An accurate and robust +/-nV(T) extractor is introduced. Basically, th e circuit consists of a current comparator and a source follower. The output of the comparator controls the bias current level in the follow er, and thus its low output resistance is divided by the loop gain pro viding high accuracy in most applications. Experimental results using commercial matched MOS transistor array TC4007, which have been compar ed with the value obtained by classical methods, confirm the validity of the proposed circuit.