Title :
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
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;
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
DOI :
10.1109/ECCTD.2011.6043814
