Ultra-low-voltage CMOS crystal oscillators
Resumen:
In this paper, 32 kHz crystal oscillators operating with only 60 mV supply are presented. Two implementations based on a Schmitt trigger circuit for two different crystals were designed and experimentally characterized. The circuits require 45 μm x 74 μm and 78 μm x 83 μm, respectively, within a 130 nm CMOS process. The power consumptions of the oscillators are 2.26 nW and 15 nW and the temperature stabilities attained are 62 ppm (25-62°C) and 50 ppm (5-62°C), respectively. The dependence on the supply voltage of the current consumption, fractional frequency, start-up time and oscillation amplitude were measured. The Allan deviation is 30 ppb for both oscillators.
| 2020 | |
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Ultra-low-voltage Crystal oscillator Schmitt trigger Pierce oscillator Subthreshold 32 kHz XO |
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| Inglés | |
| Universidad de la República | |
| COLIBRI | |
| https://hdl.handle.net/20.500.12008/23857 | |
| Acceso abierto | |
| Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0) |
| Sumario: | Publicado en IEEE Transactions on Circuits and Systems I : Regular Papers, Vol. 67. |
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