Open AccessWide range temperature sensor with adaptive nonlinearity cancellation (ANC) technique for HVICs
Author(s) -
Zhang Yunwu,
Zhu Jing,
Sun Weifeng,
Lu Yangyang,
Wang Fagang,
Yu Kuo
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.3434
Subject(s) - linearity , saturation current , atmospheric temperature range , common emitter , materials science , bipolar junction transistor , voltage , saturation (graph theory) , nonlinear system , diode , absolute zero , optoelectronics , temperature measurement , electronic circuit , transistor , control theory (sociology) , electrical engineering , physics , engineering , mathematics , computer science , control (management) , combinatorics , quantum mechanics , artificial intelligence , meteorology , thermodynamics
A new temperature sensor utilising an adaptive nonlinearity cancellation circuit is proposed among two base‐emitter voltages ( V BEPT and V BEIO ) of the diode‐connected bipolar junction transistors driven in saturation region with a proportional to absolute temperature current and an independent of absolute temperature current, respectively. In this way, the nonlinear effect originated from the temperature dependence of saturation current ( I S ) drift can be cancelled adaptively through subtraction circuits. The measurements indicate that the proposed temperature sensor can achieve a sensitivity of −9.75 mV/°C with linearity up to 99.95% over the temperature range of 170°C (−40–130°C).