Title
A 35-Mv Supply Ring Oscillator Consisting Of Stacked Body Bias Inverters For Extremely Low-Voltage Lsis
Abstract
This paper proposes a ring oscillator (ROSC) for extremely low-voltage LSI applications. The ROSC consists of dedicated low-voltage stacked body bias inverters (SBBIs) that are based on the conventional self bias inverter (SBI) and stacked inverter (SI). The proposed SBBI employs the advantages of both SBI and SI to oscillate at extremely low supply voltage. The voltage gain of the proposed SBBI is improved by controlling main inverter's supply (V-DD and Gnd) and body-bias voltages, by using stacked and feedback inverters. The novelty of our proposed SBBI is in the combination of the conventional low-voltage circuit design techniques and its demonstration at extremely low supply voltage. Simulated and measured results in a 0.18-mu m CMOS process with deep n-well option demonstrated that the proposed ROSC can operate at extremely low supply voltage of 35 mV and generate a clock with an 88 % voltage swing from an input supply voltage of 50 mV. To the best of the authors' knowledge, this is the lowest supply voltage CMOS ring oscillator ever reported.
Year
DOI
Venue
2021
10.1587/elex.18.20210065
IEICE ELECTRONICS EXPRESS
Keywords
DocType
Volume
startup oscillator, ring oscillator, inverter, power management, low-voltage energy harvesting
Journal
18
Issue
ISSN
Citations 
6
1349-2543
0
PageRank 
References 
Authors
0.34
0
9
Name
Order
Citations
PageRank
Masaya Nishi100.34
Kaori Matsumoto200.68
Nobutaka Kuroki35712.88
Masahiro Numa48220.87
Hikaru Sebe500.34
Ryo Matsuzuka671.59
Osamu Maida700.68
Daisuke Kanemoto800.68
Tetsuya Hirose900.34