Low Power Current-Mode Relaxation Oscillators for Temperature and Supply Voltage Monitoring - VLSI-SoC: Design Trends Access content directly
Conference Papers Year : 2021

Low Power Current-Mode Relaxation Oscillators for Temperature and Supply Voltage Monitoring

Shanshan Dai
  • Function : Author
Xiaoyu Lian
  • Function : Author
Kangping Hu
  • Function : Author
Sherief Reda
  • Function : Author
Jacob K. Rosenstein
  • Function : Author
  • PersonId : 1158076

Abstract

This chapter presents a family of current-mode relaxation oscillators that can be designed either as a compensated digital clock source, or as an oscillator-based sensor whose frequency reports the temperature or supply voltage. One compensated timer implementation in 0.18 $$\upmu $$μm CMOS achieves a figure of merit of 120 pW/kHz, making it one of the most efficient relaxation oscillators reported to date. The oscillator design is then extended to produce a $$V_{DD}$$VDD-controlled oscillator and a temperature-controlled oscillator. Finally, we introduce a low-power hybrid oscillator sensor, which encodes measurements of both the supply voltage and temperature into the durations of its two alternating digital clock phases. The underlying dual-phase current-mode relaxation oscillator and the resulting sensor circuits are easy to implement, are area- and energy-efficient, and offer straightforward power and speed tradeoffs for a wide range of applications.
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hal-03759736 , version 1 (24-08-2022)

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Shanshan Dai, Caleb R. Tulloss, Xiaoyu Lian, Kangping Hu, Sherief Reda, et al.. Low Power Current-Mode Relaxation Oscillators for Temperature and Supply Voltage Monitoring. 28th IFIP/IEEE International Conference on Very Large Scale Integration - System on a Chip (VLSI-SoC), Oct 2020, Salt Lake City, UT, United States. pp.39-63, ⟨10.1007/978-3-030-81641-4_3⟩. ⟨hal-03759736⟩
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