Quick Start-up Crystal Oscillator (VLSIC 2014)

"92% Start-up Time Reduction by Variation-Tolerant Chirp Injection (CI) and Negative Resistance Booster (NRB) in 39MHz Crystal Oscillator"

Presented in IEEE Syposium on VLSI Circuits 2014 & Published in IEEE Journal of Solid-State Circuits 2016.

To reduce the start-up time of a crystal oscillator (XO), a chirp injection (CI) and a negative resistance booster (NRB) are proposed. By combining CI and NRB, the measured start-up time of a 39-MHz XO in 180-nm CMOS is reduced by 92% from 2.1ms to 158μs, which is the shortest time in the published XO’s. The measured start-up time variations due to the ±20% supply voltage change or the temperature change are less than 13%.

Information for Citation:

• S. Iguchi, H. Fuketa, T. Sakurai, and M. Takamiya, “Variation-tolerant quick-start-up CMOS crystal oscillator with chirp injection and negative resistance booster,” IEEE J. Solid-State Circuits, vol. 51, no. 2, pp. 496‒508, Feb. 2016.

• S. Iguchi, H. Fuketa, T. Sakurai, and M. Takamiya, “92% start-up time reduction by variation-tolerant chirp injection (CI) and negative resistance booster (NRB) in 39MHz crystal oscillator,” in IEEE Symp. VLSI Circuits Dig. Tech. Papers, Jun. 2014, pp. 236‒237.