Change search
ReferencesLink to record
Permanent link

Direct link
Constant gm, rail-to-rail input transconductance stage with output common mode current compensation
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2006 (English)In: 13th IEEE International Conference on Electronics, Circuits and Systems: ICECS '06 ; 10 - 13 Dec. 2006, Nice, France, Piscataway, N.J: IEEE Communications Society, 2006, 596-599 p.Conference paper (Refereed)
Abstract [en]

This paper presents a compensation structure to reduce the output common mode current of a rail-to-rail constant gm transconductance stage. The transconductance stage is a differential structure with the input transistors biased in weak inversion. This results in low power consumption and a simple relation between gm and tail currents. The constant gm is achieved by doubling the tail current in the active differential couple when the other one goes to cut off. Together with constant bias current in the output stage this can result in common mode bias current flowing from the output depending on the common mode input voltage. The proposed solution eliminates this problem by variation of the bias current in the output stage in relation to the tail currents in the differential couples. The transconductance stage was manufactured in a 0.35 um CMOS process. Measurement results are presented together with simulation data. The compensation structure cancels the common mode output currents for common mode input signals up to a frequency of 7 MHz.

Place, publisher, year, edition, pages
Piscataway, N.J: IEEE Communications Society, 2006. 596-599 p.
Research subject
Industrial Electronics
URN: urn:nbn:se:ltu:diva-35581DOI: 10.1109/ICECS.2006.379859ScopusID: 47349110343Local ID: a28d2630-8ed1-11db-8975-000ea68e967bISBN: 1-4244-0395-2OAI: diva2:1008834
IEEE International Conference on Electronics, Circuits and Systems : 10/12/2006 - 13/12/2006
Godkänd; 2006; 20061218 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

Open Access in DiVA

fulltext(619 kB)2 downloads
File information
File name FULLTEXT01.pdfFile size 619 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Kozmin, KirillJohansson, Jonny
By organisation
Embedded Internet Systems Lab

Search outside of DiVA

GoogleGoogle Scholar
Total: 2 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

ReferencesLink to record
Permanent link

Direct link