A low-power temperature-compensated CMOS relaxation oscillator

Ni, Yuchi; Onabajo, Marvin

doi:10.1007/s10470-014-0261-9

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Cited by 12 publications

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“…Ring oscillators [5] are considerably accurate, but consume several hundred microwatts. Relaxation oscillators [3,6,7,8,9] can achieve good temperature performance while operate at lower power, which is extremely suitable for low power applications.…”

Section: Introductionmentioning

confidence: 99%

A low power low supply sensitivity current-mode relaxation oscillator

Sun

Han

Qian

2014

IEICE Electron. Express

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This paper presents a design of a 100 kHz 0.54 µW fully integrated current-mode relaxation oscillator. The transistors in the sub-threshold region, the current-mode comparator, the current-starving RS flip-flop are used to reduce the power consumption. Meanwhile, the employing of the current-starving RS flip-flop significantly reduces the sensitivity of the frequency to supply voltage fluctuation. The temperature coefficient is 51 ppm/°C from −40 to 85°C, and the line regulation is −0.40%/V over a supply voltage range from 1.0 to 2.0 V. This oscillator is designed in SMIC 0.18 µm CMOS technology and operates at minimum supply voltage of 1.0 V with drawn current of 540 nA at room temperature.

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