A 32kHz crystal oscillator leveraging voltage scaling in an ultra-low power 40nA real-time clock

In this paper, an ultra-low power consumption crystal oscillator embedded in an RTC module (ASIC and its crystal resonator) is presented. The technique leverages oscillation amplitude and loads capacitance scaling; it incorporates transistor level merging and a power injection mechanism in the resonator to reduce power consumption. The crystal oscillator starts up without additional complex circuitry. Measured power consumption is 10nW at 1V and operation is demonstrated from 0.6V to 5V under a regulator, while room temperature ranges from -40 to 85 degrees C across four corner wafers.


Published in:
2018 31St Ieee International System-On-Chip Conference (Socc), 308-313
Presented at:
31st IEEE International System-on-Chip Conference (SOCC), Arlington, VA, Sep 04-07, 2018
Year:
Jan 01 2018
Publisher:
New York, IEEE
ISSN:
2163-9612
ISBN:
978-1-5386-1491-4
Keywords:




 Record created 2019-06-18, last modified 2019-12-05


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