An RC oscillator with temperature compensation for accurate delay control in electronic detonators

Author

Zhou, Qinyu ; Li, Liming ; Chen, Guican

Author_Institution

Inst. of Microelectron., Xi´´an Jiaotong Univ., Xi´´an, China

fYear

2009

fDate

25-27 Dec. 2009

Firstpage

274

Lastpage

277

Abstract

An on-chip RC oscillator in electronic detonators, whose frequency is stable with temperature and supply voltage variation, is presented in this paper. As a critical part in the oscillator, a current reference with second-order temperature compensation is proposed. Some modifications to the topology of the RC oscillator are also presented to achieve better accuracy. The circuit is designed in 0.18Â¿m CMOS technology. Simulation results show that the current reference has a temperature coefficient of only 2.48 ppm/Â°C and the maximum fluctuation of the RCO frequency is less than 0.093% in the temperature range of -30~110Â°C and the supply voltage range of 3.1~3.5V.

Keywords

CMOS integrated circuits; RC circuits; circuit simulation; detonation; network synthesis; oscillators; CMOS technology; RCO frequency; current reference; delay control; electronic detonators; on-chip RC oscillator; second-order temperature compensation; size 0.18 mum; supply voltage variation; temperature compensation; CMOS technology; Circuit simulation; Circuit topology; Delay; Fluctuations; Frequency; Radio control; Temperature control; Temperature distribution; Voltage-controlled oscillators; Current reference; Electronic Detonator; RC Oscillators; Temperature Compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits, 2009. EDSSC 2009. IEEE International Conference of

Conference_Location

Xi´an

Print_ISBN

978-1-4244-4297-3

Electronic_ISBN

978-1-4244-4298-0

Type

conf

DOI

10.1109/EDSSC.2009.5394266

Filename

5394266