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

作者：Chung Ching Che^*; Li Jhih Wei

来源：Turkish Journal of Electrical Engineering and Computer Sciences, 2017, 25(2): 1472-1482.

DOI：10.3906/elk-1510-174

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

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/degrees C and 72 ppm/mV over 0 degrees C to 75 degrees 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.

• 出版日期2017