CMOS current-mode exponential-control variable-gain amplifier
Journal
Electronics Letters
Journal Volume
37
Journal Issue
14
Pages
868-869
Date Issued
2001-07
Author(s)
Abstract
A CMOS current-mode exponential-control variable-gain amplifier is presented. It consists of a first-order current-mode pseudo-exponential circuit and a current-mode multiplier. Based on the Taylor's series expansion, the pseudo-exponential circuit can be realised by MOSFETs in saturation. The proposed circuit has been fabricated in a 0.5 μm N-well CMOS process with a gain control range of 15dB. The experimental results confirm the feasibility of the proposed variable-gain amplifier.
SDGs
Other Subjects
Amplifiers (electronic); Gain control; Integrated circuit manufacture; MOSFET devices; Current-mode multipliers; Variable gain amplifiers; CMOS integrated circuits
Type
journal article
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