Conference Proceeding

A micropower multi decade dynamic range current-mode true RMS-to-DC converter

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan;
09/2007; DOI:10.1109/NEWCAS.2007.4488029 ISBN: 978-1-4244-1163-4 pp.1493 - 1496 In proceeding of: Circuits and Systems, 2007. NEWCAS 2007. IEEE Northeast Workshop on
Source: IEEE Xplore

ABSTRACT A log-domain current-mode true RMS-to-DC converter based on a novel synthesis of a simplified current-mode low pass filter and a two-quadrant squarer/divider is presented. The circuit employs floating gate MOS (FG-MOS) transistors operating in weak inversion region, and features low power(<1.5 uW), low supply voltage (0.9 V), two quadrant input current, immunity from body effect, and wide input dynamic range(0.6 nA to 400 nA). Simulation results by HSPICE show high performance of the circuit and confirm the validity of the proposed technique.

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Keywords

features low power(<1.5 uW)
 
FG-MOS
 
gate MOS
 
immunity
 
log-domain current-mode true RMS-to-DC converter
 
low supply voltage
 
proposed technique
 
quadrant input current
 
simplified current-mode low
 
two-quadrant squarer/divider
 
wide input dynamic range(0.6 nA