Dear team,
How to do compatible design in ADS1248 for both PT1000 and NTC design? Our recommend circuit is for PT1000, but I can not figure out how to do compatible for NTC. The precision is required in 2 degree. Thanks!
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Dear team,
How to do compatible design in ADS1248 for both PT1000 and NTC design? Our recommend circuit is for PT1000, but I can not figure out how to do compatible for NTC. The precision is required in 2 degree. Thanks!
Hi Zoe Yang,
A thermistor is basically just a resistor divider circuit, where one of the resistors is a constant resistance (bias resistor) and the other is the variable resistor (NTC).
You can review section 2.8.2 in our thermocouple cookbook for more information: https://www.ti.com/lit/pdf/sbaa274
This section talks about cold junction compensation using an NTC, and an example circuit diagram is given.
-Bryan