Open Access0.8‐V 1.4‐nW multi‐decade frequency range true RMS to DC converter based on two‐quadrant current squarer circuit
Author(s) -
Maryan Mohammad Moradinezhad,
Azhari Seyed Javad,
Ayatollahi Ahmad,
Sajadinia Hamed
Publication year - 2020
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0007
Subject(s) - nmos logic , transistor , robustness (evolution) , electronic engineering , voltage , cmos , electrical engineering , monte carlo method , computer science , process corners , engineering , mathematics , biochemistry , chemistry , statistics , gene
A low‐voltage ultra‐low‐power two‐quadrant current squarer based‐true RMS to DC converter circuit is presented in this study. The proposed current squarer is based on two translinear loops with matched NMOS transistors operating in the weak inversion region. Ultra‐low‐power dissipation of 1.4 nW, multi‐decade frequency range of 0.5 Hz–55 kHz and large input dynamic range of 72 pA–1 nA (with error <3%) are the main achievements of the proposed design while constructed of only ten transistors. Post‐layout simulations with 0.8‐V supply voltage using HSPICE software in 0.18 μm TSMC CMOS process (level‐49 parameters) verified the good functionality of the proposed circuit. Moreover, Monte Carlo analysis is performed to validate the satisfactory PVT robustness and reliability of the design's performance.