Design and Analysis of a Resistive Frequency-Locked Oscillator With Long-Term Stability Using Double Chopper Stabilization

Kuang Wei Cheng, Sheng Kai Chang, Bo Sheng Li, Zhi Ting Tsai

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

A resistive frequency-locked loop on-chip oscillator based on a double chopper stabilization technique is proposed for the improvement of frequency stability. The temperature-sensitive nonidealities, including the reference mismatch current and amplifier offset voltage, are suppressed by a double chopper stabilization technique. A prototype chip is implemented in a 180-nm CMOS process with an active area of 0.3 mm2. The measurement results show that the frequency-locked oscillator operating at 250 kHz achieves temperature stability of 27.1 ppm/°C and long-term stability of 2.73 ppm, with the power consumption of 293 nW. The mitigation of the low-frequency flicker noise results in a 16X improvement in the long-term stability of the RFLO compared to that with no chopper technique.

原文English
頁(從 - 到)655-666
頁數12
期刊IEEE Transactions on Circuits and Systems I: Regular Papers
70
發行號2
DOIs
出版狀態Published - 2023 2月 1

All Science Journal Classification (ASJC) codes

  • 硬體和架構
  • 電氣與電子工程

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