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Differential Temperature Sensors: Review of Applications in the Test and Characterization of Circuits Usage and Design Methodology

机译:差分温度传感器:电路测试和表征用途和设计方法中的应用综述

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摘要

Differential temperature sensors can be placed in integrated circuits to extract a signature of the power dissipated by the adjacent circuit blocks built in the same silicon die. This review paper first discusses the singularity that differential temperature sensors provide with respect to other sensor topologies, with circuit monitoring being their main application. The paper focuses on the monitoring of radio-frequency analog circuits. The strategies to extract the power signature of the monitored circuit are reviewed, and a list of application examples in the domain of test and characterization is provided. As a practical example, we elaborate the design methodology to conceive, step by step, a differential temperature sensor to monitor the aging degradation in a class-A linear power amplifier working in the 2.4 GHz Industrial Scientific Medical—ISM—band. It is discussed how, for this particular application, a sensor with a temperature resolution of 0.02 K and a high dynamic range is required. A circuit solution for this objective is proposed, as well as recommendations for the dimensions and location of the devices that form the temperature sensor. The paper concludes with a description of a simple procedure to monitor time variability.
机译:可以将差分温度传感器放置在集成电路中,以提取内置在同一硅芯片中的相邻电路模块所消耗的功率的信号。本文首先讨论了差动温度传感器相对于其他传感器拓扑结构所具有的奇异性,其中电路监控是它们的主要应用。本文着重于射频模拟电路的监控。审查了提取受监视电路功率签名的策略,并提供了测试和表征领域的应用示例列表。作为一个实际示例,我们详细阐述了设计方法,逐步设计了一个差分温度传感器,以监视在2.4 GHz工业科学医学(ISM)频段工作的A类线性功率放大器中的老化退化。对于此特定应用,讨论了如何需要具有0.02 K的温度分辨率和高动态范围的传感器。为此目的提出了一种电路解决方案,并提出了构成温度传感器的设备尺寸和位置的建议。本文以对监视时间可变性的简单过程进行了描述。

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