题目/Title：A 2.8 μW 0.022 mm2 8 MHz Monolithic Relaxation Oscillator

作者/Author：
                        Wendi Yang,Hanjun Jiang,Yanshu Guo,Wen Jia,Zhihua Wang

会议/Conference：ISCAS 2020

地点/Location：Sevilla, Spain

年份/Issue Date：2020.10-21 Oct.

页码/pages：pp. 1 - 5

摘要/Abstract：
This paper presents a fully-integrated 8 MHz relaxation oscillator for ultra-low-power applications. Fabricated in 0.13 渭m CMOS process, the oscillator occupies an area of 0.022 mm2. With adaptive reference generation and low-swing oscillation design, the power consumption is 2.8 渭W, resulting a figure-of-merit of 0.35 nW/kHz. The adaptive reference feedback compensates the comparator delay and filters out the low-offset frequency part of the noise and temperature variation. To reduce the frequency influence due to current mismatch on the reference voltage and oscillation node, cascode current mirrors are applied. To reduce the influence due to the delay of capacitor reset logic, a pulse-to-edge generation block is used. The measured temperature stability is 1.24% in the temperature range of 鈭?0 掳C to 60 掳C and the measured periodic rms jitter is 180 ps, 0.144 % jitter-per-period on the output.