Paper Info
Title
A 2.2μW 600kHz Frequency-Locked Relaxation Oscillator with 0.046%/V Voltage and 48.69ppm/°C Temperature Stability for IoT Sensor Node Applications
Abstract
This brief presents a 600kHz relaxation oscillator with 2.2 μW power consumption. A low power frequency-locked loop (FLL) structure is proposed to increase the frequency immunity against voltage, temperature and process (PVT) variations. A front-end regulator is proposed to further enhance the voltage stability with limited power overhead. A current-injection scheme is proposed to compensate the temperature variation from the on-chip poly-resistors. Fabricated in 0.18 μm technology, this oscillator can operate at an unregulated supply from 1.1V to 3.3V with 0.046%/V voltage stability and the measured temperature stability is 48.69ppm/°C from -45°C to 125 °C. The measured Jitter <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</sub> is 1.56ns with 120k hits.
Year
DOI
Venue
2019
10.23919/VLSIC.2019.8778065
2019 Symposium on VLSI Circuits
Keywords
Field
DocType
IoT sensor node applications,low power frequency-locked loop structure,voltage stability,frequency-locked relaxation oscillator,current-injection scheme,on-chip polyresistors,voltage 1.1 V to 3.3 V,power 2.2 muW,frequency 600.0 kHz
Sensor node,Oscillation,Relaxation oscillator,Computer science,Voltage,Internet of Things,Electronic engineering,Thermal stability,Jitter,Optoelectronics,Temperature measurement
Conference
ISSN
ISBN
Citations 
2158-5601
978-1-7281-0914-5
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Xiaodong Meng110.75
Xing Li2223.44
Xiaopeng Zhong3173.21
Yuan Yao432.74
Chi-ying Tsui51939314.94
Wing-Hung Ki61144197.75