A new CMOS exponential circuit with extended linear output range

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 wi...

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Main Authors: Saatlo, A. N., Ozoguz, S.
Format: Conference Proceeding
Language:English
Subjects:
Accuracy
CMOS
CMOS integrated circuits
CMOS technology
exponantial function
Gain
Least squares approximation
Transistors
VGA
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Ozoguz, S.
description 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.
doi_str_mv 10.1109/ECCTD.2011.6043814
format conference_proceeding
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Accuracy
CMOS
CMOS integrated circuits
CMOS technology
exponantial function
Gain
Least squares approximation
Transistors
VGA
title A new CMOS exponential circuit with extended linear output range
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