√ x circuit based on a novel, back-gate-usingmultiplier
- 3 February 1994
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 30 (3) , 183-184
- https://doi.org/10.1049/el:19940176
Abstract
A simple low-power low-voltage square-rooting circuit (or √x circuit) is presented. This circuit is based on a novel multiplier that uses the back gate of a MOSFET biased in weak inversion. A breadboard implementation has shown an error of less than 20% with respect to the desired transfer over an input current range from 4pA to 80nA.Keywords
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