A 0.01 mm210MHz RC Frequency Reference with a 1-Point On-Chip-Trimmed Inaccuracy of ±0.28% from -45°C to 125°C in 0.18μm CMOS

Conference paper (2023)

Authors

Xiaomeng An Student
S. Pan Tsinghua University, Electronic Instrumentation - EEMCS
H. Jiang Electronic Instrumentation - EEMCS
K.A.A. Makinwa Microelectronics
Department
Microelectronics
Copyright: © 2023 X. An, S. Pan, H. Jiang, K.A.A. Makinwa
DOI: https://doi.org/10.1109/ISSCC42615.2023.10067530
More Info
expand_more

Published Date

2023

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Department

Microelectronics

Abstract

CMOS frequency references based on RC oscillators are usually preferred over bulky crystals in loT applications [1-5]. However, due to the process spread and finite temperature coefficient (TC) of most on-chip resistors, RC oscillators require trimming and temperature compensation to achieve decent accuracy. Enabled by high-resolution trimming techniques such as DeltaSigma [1], [2] or pulse-density [3] modulation, recent designs can obtain good accuracy (<0.1 %) at the expense of large chip area. However, existing compact (<0.02mm2) designs suffer from frequency errors in the order of 1% or more [4], [5]. Moreover, their temperature compensation schemes usually require the use of resistors with complementary TCs, which are not available in all CMOS technologies.

Files

A_0.01_mm2_10MHz_RC_Frequency_... (pdf)
(pdf | 1.03 Mb)
- Embargo expired in 23-09-2023
Unknown license