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本文提出了一种基于BJT的温度传感器，采用紧凑的连续时间读出方案，避免了传统离散时间读出方案的kT/C噪声限制。该传感器在-55°C到125°C范围内实现了±0.1°C (3σ)的高精度，同时具有0.85pJ∙K²的分辨率FoM，仅需1点校准。
temperature sensors are widely used due to their high accuracy over a wide temperature range with a low-cost 1-point trim. Although resistor-based sensors can achieve better energy efficiency, they typically require a 2-point trim to achieve comparable accuracy, while thermal-diffusivity based sensors achieve superior accuracy at the cost of energy efficiency [1]. This paper presents a BJT-based temperature sensor that achieves both excellent accuracy and energy efficiency. To avoid the kT/C noise limitations of conventional discrete-time (DT) readout schemes [2,3], it employs a compact continuous-time (CT) front-end. Component mismatch, which often limits the accuracy of CT front-ends [4,5], is mitigated by a combination of dynamic element
Nandor G. Toth*1, Zhong Tang1, Teruki Someya1,3, Sining Pan*1,2, Kofi A. A. Makinwa1
Delft University of Technology, Delft, The Netherlands Tsinghua University, Beijing, China, 3now with SiTime, Tokyo, Japan *Equally-Credited Authors (ECAs) 1 2 BJT-based