Open Access1 V CMOS current references for wide‐temperature range applications
Author(s) -
Calvo B.,
Azcona C.,
Medrano N.,
Celma S.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.2050
Subject(s) - micropower , cmos , current mirror , current (fluid) , electrical engineering , voltage , atmospheric temperature range , low voltage , electronic engineering , compensation (psychology) , range (aeronautics) , power (physics) , power consumption , computer science , materials science , optoelectronics , engineering , physics , transistor , psychology , quantum mechanics , meteorology , psychoanalysis , composite material
Two new low‐voltage micropower first‐order temperature‐compensated CMOS current references are presented. To achieve compact architectures able to operate under low voltage with low power consumption, the references are based on the simplest approach of cross‐coupled current mirrors, and compensation is obtained by introducing a temperature‐dependent current mirror ratio. Results for 0.18 µm CMOS implementations show that the proposed 1 μA references operate with supplies down to 1 V showing temperature drifts below 231 ppm/°C over a (from –40 to 120°C) range.