In this series, we’re going to be taking a look at a wide range of temperature sensors, talking about their advantages and disadvantages as well as common implementations/topologies for their implementation. You can also find a full range of NTC thermistors, and many tens of thousands of other components and sensors, in my Celestial Altium Library, the largest open source library for Altium Designer®. If you're looking to purchase NTC thermistors, head over to Octopart and see what's in stock with your favorite distributor. NTC thermistors are probably the most commonly used class of temperature sensor as they are cheap, easy to use, and despite not being incredibly precise are accurate enough for most applications. In this article, we’ll be starting with our first type of temperature sensor, the negative temperature coefficient (NTC) thermistor.
As always, these projects are open source, released under the MIT license allowing you to use them with very little in the way of restrictions. You can find those templates and the sensor implementations for these NTC thermistors on GitHub. In the introduction to this series, we started work on testing all the different types of temperature available by building a set of project templates: one for analog sensors and one for digital sensors.
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