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°C across four corner wafers.

Schlagwörter

Oscillators, Crystals, Capacitance, Transistors, Impedance, Power demand, Resistors, CMOS, crystal oscillator, fast startup, low-voltage, ultra-low-power, RTC module, SoC, internet of things

Fachgebiet (DDC)

620 - Ingenieurwissenschaften und Maschinenbau

Projekt

Veranstaltung

31st IEEE International System on Chip Conference (SOCC)

Startdatum der Ausstellung

Enddatum der Ausstellung

Startdatum der Konferenz

Enddatum der Konferenz

Datum der letzten Prüfung

ISBN

978-1-5386-1490-7

ISSN

Sprache

Englisch

Während FHNW Zugehörigkeit erstellt

Nein

Zukunftsfelder FHNW

Publikationsstatus

Veröffentlicht

Begutachtung

Peer-Review der ganzen Publikation

Open Access-Status

Closed

Lizenz

Zitation

Coustans, M., Krummenacher, F., Kayal, M., Rossi, L., Dellea, M., Godat, Y., Sierro, Y., & DallaPiazza, S. (2019). A 32kHz crystal oscillator leveraging voltage scaling in an ultra-low power 40NA real-time clock. In M. Stan, K. Bhatia, H. (. Li, M. Alioto, & R. Sridhar (Eds.), Proceedings 31st IEEE International System on Chip Conference (SOCC) (pp. 308–313). IEEE. https://doi.org/10.1109/SOCC.2018.8618534

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