一个120nW, 121 kHz， -20~100°C的CMOS弛豫振荡器，带有数字电流比较器和片上电压和电流基准

2022 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA) Pub Date : 2022-10-28 DOI:10.1109/ICTA56932.2022.9963069

Renwei Chen, Yifei Zhang, Chenchang Zhan

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引用次数: 0

摘要

介绍了一种由电压电流基准(VCR)和数字电流比较器组成的弛豫振荡器(RO)。通过在VCR中使用温度系数(TC)相反的两种不同类型的电阻，本设计以非常简单的结构成功地将工作频率稳定在-20至100°C之间。该RO采用标准的180nm CMOS工艺设计，在0.8V电源下功耗120nW，工作频率121kHz, TC低至36.2 ppm/°C。

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A 120nW, 121 kHz, -20~100°C CMOS Relaxation Oscillator with Digital Current Comparator and On-Chip Voltage and Current Reference

A relaxation oscillator(RO) composed of a voltage and current reference (VCR) and a digital current comparator is presented in this paper. By using two different types of resistors with opposite temperature coefficient (TC) in the VCR, this design successfully stabilizes the operation frequency from -20 to 100° C with a very simple structure. Designed in a standard 180nm CMOS process, the proposed RO consumes 120nW under a 0.8V supply and operates at 121kHz, with a TC as low as 36.2 ppm/°C.

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2022 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA)

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