A temperature compensated CMOS relaxation oscillator for low power applications

Author

Soldera, Jefferson D B ; Berens, Michael Todd ; Olmos, Alfredo

Author_Institution

Lab. de Sist. Integraveis Tecnol.-LSITEC, Sao Paulo, Brazil

fYear

2012

fDate

Aug. 30 2012-Sept. 2 2012

Firstpage

1

Lastpage

4

Abstract

The design of an area-efficient CMOS relaxation oscillator for low power applications is described. Its architecture includes a temperature compensation scheme based on the matching of bias current circuit and oscillator inverters threshold voltages that provides a clock frequency stable over the entire temperature range (-40°C~125°C). The circuit is the auto-wakeup IP core of a microcontroller family for consumer applications, occupies an area of 0.03mm² in a 0.5μm CMOS process, operates from 1.5V to 5.5V, and consumes 800nA.

Keywords

CMOS integrated circuits; compensation; low-power electronics; relaxation oscillators; area-efficient CMOS relaxation oscillator; autowakeup IP core; bias current circuit; clock frequency; current 800 nA; low power application; microcontroller; oscillator inverter threshold voltage; size 0.5 micron; temperature -40 C to -125 C; temperature compensation; voltage 1.5 V to 5.5 V; CMOS; Relaxation oscillator; low power; temperature compensated;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits and Systems Design (SBCCI), 2012 25th Symposium on

Conference_Location

Brasilia

Print_ISBN

978-1-4673-2606-3

Type

conf

DOI

10.1109/SBCCI.2012.6344442

Filename

6344442