A new CMOS exponential circuit with extended linear output range

Author

Saatlo, Ali Naderi ; Ozoguz, Serdar

Author_Institution

Fac. of Electr.-Electron. Eng., Istanbul Tech. Univ., Maslak, Turkey

fYear

2011

Firstpage

893

Lastpage

896

Abstract

In this paper, a new CMOS exponential circuit with improved linear output range is presented. The proposed circuit is based on a new approximation function to increase the dB-linear output range. Simulation results in a 0.35 μm standard CMOS technology using HSPICE reveal an output range of 78 dB with errors less than ±1 dB. Also the Monte-Carlo simulation results for the threshold voltage variations verify the circuit performance. The proposed circuit can be used for the design of variable gain amplifier and automatic gain control.

Keywords

CMOS integrated circuits; Monte Carlo methods; amplifiers; automatic gain control; function generators; CMOS exponential circuit; HSPICE; Monte-Carlo simulation; approximation function; automatic gain control; exponential function generators; linear output range; size 0.35 mum; threshold voltage variations; variable gain amplifier; Accuracy; CMOS integrated circuits; CMOS technology; Gain; Least squares approximation; Transistors; CMOS; VGA; exponantial function;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design (ECCTD), 2011 20th European Conference on

Conference_Location

Linkoping

Print_ISBN

978-1-4577-0617-2

Electronic_ISBN

978-1-4577-0616-5

Type

conf

DOI

10.1109/ECCTD.2011.6043814

Filename

6043814