A 250 kHz resistive frequency-locked on-chip oscillator with 24.7 ppm/°C temperature stability and 2.73 ppm long-term stability

Sheng Kai Chang, Zhi Ting Tsai, Kuang Wei Cheng

研究成果: Conference contribution

摘要

This work presents a resistive frequency-locked loop on-chip oscillator with a double chopper stabilization technique to improve the temperature stability and long-term stability. The negative feedback topology achieves both a low temperature coefficient (TC) and good energy efficiency. A prototype device is fabricated in 0.18-μm CMOS technology and exhibits a 24.7 ppm/ºC temperature stability and 2.73 ppm long-term stability while consuming just 293 nW under an oscillation frequency of 250 kHz. The use of the double chopper stabilization technique effectively eliminates the TC-sensitive non-idealities, including the current mismatch and offset voltage of the amplifier. Moreover, the low-frequency flicker noise is also mitigated; resulting in a 16X improvement in the long-term stability.

原文English
主出版物標題2020 IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781728133201
出版狀態Published - 2020
事件52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Virtual, Online
持續時間: 2020 10月 102020 10月 21

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
2020-October
ISSN(列印)0271-4310

Conference

Conference52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020
城市Virtual, Online
期間20-10-1020-10-21

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程

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