ELECTRONIC SENSORS


How to choose a temperature sensor for a  application


By Mehrdad Peyvan, application manager, Analog Devices


Figure 1. A typical MAX31888 application circuit. T


emperature sensors are essential for a wide range of applications and uses, including consumer electronics, environmental monitoring and industrial processing.


To guarantee precise and accurate temperature readings, it is essential to select the correct temperature sensor. Selecting the most suitable temperature sensor can  the market. This article provides guidance on selecting a temperature sensor best suited 


There exists a wide range of temperatures,    consumption, size limitation, communication protocol (SMBus, SPI, I2C, 1-Wire, etc.) and budget all need to be considered. Each of these requirements helps narrow down the selection of the most appropriate device.


Types of temperature sensors 


categories of temperature sensors available are:


RTD (resistance temperature detector):  over a moderate temperature range  an RTD is the right choice. Thermocouple: If a wide range of temperature measurements is required for    appropriate choice for high temperature situations. Thermistor: Thermistors are cost-effective   a limited temperature range (-270°C to +1800°C).


Diode-based sensor: Diode-based sensors utilise the voltage drop across a  effective and have limited temperature measurement (-55°C to +150°C), have fast response time, and are smaller than the


20 SEPTEMBER 2025 | ELECTRONICS FOR ENGINEERS


Figure 2. Low power temperature sensors vs. accuracy.





Diode-based temperature sensors can   applications from consumer electronics, industrial automation, data centres (storage  diverse electronic applications.


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