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access icon openaccess Square rooter using saw tooth wave-based time division technique

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 19/12/2013, Accepted 21/01/2014, Published 23/01/2014

A simple square rooter using two op-amps and a switch is described. It uses a saw tooth wave as reference clock and the square rooting principle is obtained by a time division technique. The circuit accepts an input dc voltages V I and produce an output voltage V O = √V I V T. V T is a constant voltage which is the peak value of the reference saw tooth wave. Verification of the feasibility of the circuit configuration is established by way of test results.

Inspec keywords: surface acoustic wave devices

Other keywords: reference clock; square rooter; reference saw tooth wave; circuit configuration; time division technique

Subjects: Acoustic wave devices

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