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Part Number: ADS1294
Hi, I dont't understand how the Temperature Reading in 188.8.131.52.4 of the Application Note ist calculated. I connected CH4 to the Temperature Sensor, it is reading a value of 2187955 in int. How can this be converted to "Temperature Reading in uV" Could you please give an example?
The BIOFAQ has a post on code to voltage conversion:
From there, makes sure that the conversion value is in uV and use the equation shown in the section to determine the temperature in degrees Celsius.
Please let me know if you have additional questions.
Alex SmithApplications Engineer | Precision Delta-Sigma Converters
Check out our helpful resources: BIO-FAQ: Common Questions for TI's ADS129x Family of Bio-Potential ADCs
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In reply to Alexander Smith:
Hi, thanks for the reply.
After triple checking i still get faulty results. Measuring on the Channel that is connected to the temperature Sensor via the MUX i always get values around 2200000 which would translate with a default gain of 6 to 105 mV. I calculated like given in the BIOFAQ. When I try to compute this with the formula given in the Datasheet i get temperature values of -57 degrees Celcius. What could go wrong here?
In reply to testcycle:
If you post your code I can take a look. More than likely, there is a wrong conversion somewhere, just a small code error.
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