利用平面霍尔电阻传感器分析高分辨率电流探针的热偏移漂移

IF 0.8 Q4 INSTRUMENTS & INSTRUMENTATION

Journal of Sensors and Sensor Systems Pub Date : 2023-08-25 DOI:10.5194/jsss-12-225-2023

N. K. Lee, Jaesoo Kim, Daesung Lee

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引用次数: 0

摘要

摘要我们开发了一种高灵敏度的针型电流探头，目标是电探测印刷电路板(pcb)。所开发的传感器显示出足够好的特性，电流测量分辨率为1ma，工作频率高达1mhz，可用于分析高度集成的pcb。然而，在其表征过程中，我们在几十分钟的时间范围内经历了单调变化的输出信号。我们将其建模为由传感器工作过程中的焦耳加热引起的热偏置漂移，并通过改变平面霍尔电阻(PHR)布局和电气工作条件以及应用脉冲宽度调制的传感器电路来减少偏置。

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Analysis of thermal-offset drift of a high-resolution current probe using a planar Hall resistance sensor

Abstract. We developed a pin-type current probe with high sensitivity, targeting electrical-probing printed circuit boards (PCBs). The developed sensor showed good enough characteristics, with 1 mA resolution on current measurements and up to 1 MHz operating frequency for analyzing highly integrated PCBs. During its characterization, however, we experienced a monotonously varying output signal in the time range of a few tens of minutes. We modeled it as the thermal-offset drift, being caused by Joule heating during sensor operation, and showed several solutions for reducing the offset by modifying the planar Hall resistance (PHR) layout and electric operation conditions and applying sensor circuitry with pulse width modulation.

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来源期刊

Journal of Sensors and Sensor Systems INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.30

自引率

10.00%

发文量

审稿时长

23 weeks

期刊介绍： Journal of Sensors and Sensor Systems (JSSS) is an international open-access journal dedicated to science, application, and advancement of sensors and sensors as part of measurement systems. The emphasis is on sensor principles and phenomena, measuring systems, sensor technologies, and applications. The goal of JSSS is to provide a platform for scientists and professionals in academia – as well as for developers, engineers, and users – to discuss new developments and advancements in sensors and sensor systems.