Symbolic analysis of the Tau Cell log-domain filter using affine MOSFET models

Author

Thanigaivelan, Balavelan ; Postula, Adam ; Jin, Craig ; van Schaik, Andre ; Hamilton, Tara Julia

Author_Institution

Sch. of Inf. Technol. & Electr. Eng., Univ. of Queensland, Brisbane, QLD, Australia

fYear

2010

fDate

6-9 Dec. 2010

Firstpage

1095

Lastpage

1098

Abstract

This paper analyses a filter known as the Tau Cell using symbolic methods and shows that the operation of this filter is independent of the magnitude of the input DC offset. This means that the circuit places no restrictions on whether the input DC offset is a sub-threshold current or not. The circuit behaviour predicted from symbolic analysis was observed in similar circuits on a chip fabricated using MOSIS AMI 1.6 μm technology. This paper highlights the utility of symbolic analysis and shows that it is a powerful tool for circuit analysis and design.

Keywords

MOS integrated circuits; MOSFET; filters; DC offset; MOSIS AMI technology; affine MOSFET model; size 1.6 mum; subthreshold current; symbolic analysis; tau cell log-domain filter; Accuracy; Analytical models; Equations; Integrated circuit modeling; Mathematical model; Threshold voltage; Transistors; Log Domain Filters; Small-Signal Modelling; Symbolic Circuit Analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-7454-7

Type

conf

DOI

10.1109/APCCAS.2010.5774809

Filename

5774809