一个简单和紧凑的跨阻模式直流桥式读出器

2021 7th International Conference on Engineering, Applied Sciences and Technology (ICEAST) Pub Date : 2021-04-01 DOI:10.1109/ICEAST52143.2021.9426268

S. Buakaew, W. Narksarp, C. Wongtaychatham

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引用次数: 0

摘要

本文提出了一种基于运算跨阻放大器(OTRA)作为模拟模块的跨阻型直流电桥的新电路结构。该电路适用于小变化电阻检测器。利用OTRA内部输入端口的接地特性，得到了一种简单紧凑的直流电桥。该电路由两个传感元件、一个反馈电阻和一个操作跨阻放大器组成。采用0.35 $\mu$m CMOS工艺模型参数，通过PSPICE仿真验证了电路的性能。电路级的仿真结果与理论值吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Simple and Compact Transimpedance Mode dc Bridge Readout

This paper presents a new circuit configuration of a transimpedance mode dc bridge based on an operational trans-resistance amplifier (OTRA) as an analog building block. The proposed circuit suits for small changing resistance detector. By taking the benefit of grounding property at the internal input port of the OTRA, a simple and compact dc bridge is obtained. The proposed circuit is composed of two sensing components together with a feedback resistor and only one operational trans-resistance amplifier. The circuit performances are verified by the PSPICE simulation using 0.35 $\mu$m CMOS technology model parameters. The simulation results from circuit level agree well with the theoretical values.

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2021 7th International Conference on Engineering, Applied Sciences and Technology (ICEAST)

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