A new CMOS logarithmic current generator

Authors

MUNIR AL ABSI
KARAMA AL TAMIMI

Abstract

A new CMOS current-mode controllable low-voltage and low-power logarithmic function circuit is proposed. The circuit provides good dynamic range, controllable output, and reasonable accuracy and it is insensitive to temperature variations. The circuit operates with $\pm $0.5 V supply, consumes 0.3 $\mu $W, and has a -3 dB frequency of 2.4 MHz. The functionality of the proposed design is confirmed using Tanner T-spice with 0.35 $\mu $m CMOS process.

DOI

10.3906/elk-1503-146

Keywords

Logarithmic circuit, current-mode, subthreshold

First Page

4517

Last Page

4524

Recommended Citation

ABSI, MUNIR AL and TAMIMI, KARAMA AL (2016) "A new CMOS logarithmic current generator," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 24: No. 5, Article 88. https://doi.org/10.3906/elk-1503-146
Available at: https://journals.tubitak.gov.tr/elektrik/vol24/iss5/88