A low power low supply sensitivity current-mode relaxation oscillator

IEICE Electronics Express

Yuji Qian¹  Yan Han¹  Jun Sun¹ 

[1] Institute of Microelectronics and Optoelectronics, Zhejiang University

关键词: relaxation oscillator;    low power;    low supply sensitivity;   

DOI  :  10.1587/elex.11.20140877

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)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.

【 授权许可】

Unknown