A cell-based 5-MHz on-chip clock generator

Authors

CHING-CHE CHUNG
JHIH-WEI LI

DOI

10.3906/elk-1510-174

Abstract

A cell-based 5-MHz on-chip clock generator for smart sensing applications is presented. By exploiting relative reference modeling, our proposed design can dynamically track both voltage and temperature variations after four-point chip calibrations. The proposed on-chip clock generator is fabricated using a 90-nm CMOS process, the frequency stability is 160 ppm/$^{\circ}$C and 72 ppm/mV over 0 $^{\circ}$C to 75 $^{\circ}$C and 0.9 V to 1.1 V, and the settling time of the proposed on-chip clock generator is 5.12 $\mu$s. The proposed on-chip clock generator was implemented with standard cells that can greatly reduce the design complexity and design time for on-chip oscillators.

Keywords

MOSFET oscillator, crystal-less clock, frequency stability, PVT compensation, digitally controlled oscillator

First Page

1472

Last Page

1482

Recommended Citation

CHUNG, CHING-CHE and LI, JHIH-WEI (2017) "A cell-based 5-MHz on-chip clock generator," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25: No. 2, Article 66. https://doi.org/10.3906/elk-1510-174
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss2/66