Paper Info
Title
A 40 nW 32.7 kHz CMOS Relaxation Oscillator with Comparator Offset Cancellation for Ultra-Low Power applications
Abstract
This paper presents a fully-integrated 32.7 kHz relaxation oscillator designed in TSMC 40 nm CMOS for IoT applications. Simulation results show that the proposed relaxation oscillator consumes 40 nW at room temperature from 0.6 V power supply. The architecture achieves a temperature coefficient (TC) as low as 12.5 ppm/°C (μ = 35.5 ppm/°C for 400 samples) from -40°C to 125°C. Also, more than 50% of samples have a TC less than 30 ppm/°C. The oscillator also has a fast start-up time, achieving a steady-state of the operating frequency within 3 cycles. The energy efficiency is 1.22 nW/kHz, and the entire circuit occupies an active area of 0.127 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Year
DOI
Venue
2020
10.1109/LASCAS45839.2020.9069038
2020 IEEE 11th Latin American Symposium on Circuits & Systems (LASCAS)
Keywords
DocType
ISSN
Ultra-low power,relaxation oscillator,temperature stability,crystal replacement,offset cancellation
Conference
2330-9954
ISBN
Citations 
PageRank 
978-1-7281-3428-4
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
William Teles Medeiros100.34
hamilton klimach27120.07
sergio bampi3496102.12