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本文提出了一种基于BJT的温度-数字转换器，实现了0.65mK的分辨率和190fJ·K2的能效品质因数，解决了高稳定性MEMS振荡器在热动态环境中的温度补偿问题。
(TDC) are used for temperature compensation of high-stability MEMS oscillators [1,2]. Such TDCs must achieve high resolution and high conversion rates in the kHz range to minimize temperature compensation impact on phase noise and frequency stability in a thermally dynamic environment, experiencing thermal ramps of 10°C/s or higher. This work achieves a resolution of 0.65mKrms in a conversion time of 0.72ms while drawing 550µA from a 1.125V supply. This corresponds to a resolution FOM of 190fJ·K2, improving energy-efficiency of state-of-the-art BJT-based sensors by >20" [3-6]. In temperature-compensated oscillators (TCXO), in addition to the TDC integrated noise, low power spectral density (PSD) is critical, as it directly appears at the
Saleh Heidary Shalmany1, Kamran Souri1, Ugur Sonmez1,
Kianoush Souri2, Michele D'Urbino1, Said Hussaini1, Darryl Tauro2, Sassan Tabatabaei2 SiTime, Delft, The Netherlands SiTime, Santa Clara, CA 1 2 Temperature-to-digital converters