Open AccessUltra‐low‐voltage CMOS ring oscillators
Author(s) -
Ferreira J.V.T.,
GalupMontoro C.
Publication year - 2019
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.2019.0281
Subject(s) - cmos , low voltage , ring oscillator , inverter , electrical engineering , schmitt trigger , transistor , realisation , voltage , optoelectronics , materials science , electronic engineering , engineering , physics , quantum mechanics
This communication discusses the realisation of ultra‐low‐voltage CMOS ring oscillators (ROs) that are potentially capable of starting up from a supply voltage V DDminof around 40 mV. Experimental results for ROs based on the standard inverter and on the six‐transistor Schmitt trigger integrated in a 130 nm CMOS technology demonstrate a start‐up voltage very close to 50 mV.