Suppose you want to design a whole large matrix of temperature sensors to sense multiple points in an entire room. You should be able to do this with diodes, correct? I do remember reading that a laser diode’s performance is dependent on its temperature. Cooler diodes require more energy to pump the same light output.
So, now let’s go searching. How do you setup a diode as a temperature sensor? Ah, yes, you use the variable reverse bias effect of a diode to sense the temperature within 5 degrees Celcius or so. Given that it’s not real good accuracy, well it might not make as much sense as you thought to use a large array of cheap temperature sensors in a room. Maybe one expensive temperature sensor would be just as effective. Even half a degree Celcius, which roughly corresponds to one degree Fahrenheit, isn’t all that good for accuracy either.
20181128/DuckDuckGo diode temperature sensor
20181128/https://www.arrow.com/en/research-and-events/articles/using-a-simple-diode-as-a-ballpark-temperature-sensor
20181128/https://en.wikipedia.org/wiki/Hysteresis
Wait, so this sensor IC can measure both temperature and humidity? Oh, apparently what happened here is that the Arrow website classified it under “temperature and humidity sensors,” but really it’s only good for temperature measurements.
20181128/https://www.arrow.com/en/products/lm95235cimmnopb/texas-instruments
20181128/DuckDuckGo LM95235CIMM/NOPB datasheet
20181128/https://www.ti.com/store/ti/en/p/product?p=LM95235CIMM/NOPB
20181128/http://www.ti.com/lit/ds/symlink/lm95235.pdf