A Precision 140MHz Relaxation Oscillator in 40nm CMOS with 28ppm/C Frequency Stability for Automotive SoC Applications: RFIC Interactive Forum 2017

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The need for high-frequency, low-power, wide temperature range, precision on-chip reference clock generation makes relaxation oscillator topology an attractive solution for various automotive applications. This paper presents for the first time a 140MHz relaxation oscillator with robust-against-process-variation temperature compensation scheme. The high-frequency relaxation oscillator achieves 28 ppm/C frequency stability over the automotive temperature range from -40 to 175C. The circuit is fabricated in 40nm CMOS technology, occupies 0.009mm2 and consumes 294W from 1.2V supply

The need for high-frequency, low-power, wide temperature range, precision on-chip reference clock generation makes relaxation oscillator topology an attractive solution...

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