Low-power low-temperature drift RC relaxation oscillation

被引：0

作者：

Yao R. ^{[1
]}

Chen D. ^{[1
]}

机构：

[1] School of Electronic and Information Engineering, South China University of Technology, Guangzhou

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2021年 / 49卷 / 10期

关键词：

Current-mode; Delay; Low power; Low temperature drift; RC relaxation oscillation;

D O I：

10.13245/j.hust.211013

中图分类号：

学科分类号：

摘要：

Aiming at the requirement of low power consumption and low temperature drift of resistance-capacitance (RC) relaxation oscillation used in internet of things devices, the reference voltage generating circuit and self-bias current generating circuit were combined, and the circuit structure was simplified with enough small supply voltage and bias current used in RC relaxation oscillation to reduce power dissipation. The cascade common gate and common source structure, the inverter chain and the clock voltage booster were utilized to reduce the influence of temperature variation to the delay and oscillation frequency. The series and parallel resistor network was employed to reduce the influence due to process deviation of resistors, and the network was configured into positive temperature characteristics on purpose of balancing the temperature dependence of RC time constant and comparator delay to improve the temperature stability of oscillation frequency. The simulation results show that the oscillation frequency of the RC relaxation oscillation is 1.2 kHz, and the power consumption and the temperature drift are 1.351 nW and 139×10-6/℃ respectively, which explains significantly improved performances such as power consumption and temperature drift coefficient than that of the typical RC relaxation oscillation. © 2021, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：79 / 84

页数：5

共 13 条

[1]

(2020)

[2]

48, 5

[3]

WANG S, GHEZZI C., A 24 MHz relaxation oscillator using single current mode comparator with ±1.67% drift from -40 ℃ to +175 ℃ for automotive sensor application, Proc of IEEE Sensors, pp. 1-4, (2020)

[4]

CHANG Y, ADIONO T, HAMIDAH A, Et al., An on-chip relaxation oscillator with comparator delay compensation, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 27, 4, pp. 969-973, (2019)

[5]

PAIDIMARRI A, GRIFFITH D, WANG A, Et al., An RC oscillator with comparator offset cancellation, IEEE Journal of Solid-State Circuits, 51, 8, pp. 1866-1877, (2016)

[6]

DENIER U., Analysis and design of an ultralow-power CMOS relaxation oscillator, IEEE Transactions on Circuits and Systems I: Regular Papers, 57, 8, pp. 1973-1982, (2010)

[7]

CHIANG Y, LIU, A submicrowatt 1.1-MHz CMOS relaxation oscillator with temperature compensation, IEEE Transactions on Circuits and Systems II: Express Briefs, 60, 12, pp. 837-841, (2013)

[8]

DAI S, ROSENSTEIN J K., A 14.4 nW 122 kHz dual-phase current-mode relaxation oscillator for near-zero-power sensors, Proc of IEEE Custom Integrated Circuits Conference, pp. 1-4, (2015)

[9]

ASANO H, HIROSE T, OZAKI T, Et al., An area-efficient, 0.022 mm<sup>2</sup>, fully integrated resistor-less relaxation oscillator for ultra-low power real-time clock applications, Proc of IEEE International Symposium on Circuits and Systems, pp. 1-4, (2017)

[10]

MEDEIROS W T, KLIMACH H, BAMPI S., A 40 nW 32.7 kHz CMOS relaxation oscillator with comparator offset cancellation for ultra-low power applications, Proc of IEEE 11th Latin American Symposium on Circuits & Systems, pp. 1-4, (2020)

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