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AD7328 range select and temperature reading

Question asked by avignani on Apr 5, 2016
Latest reply on Apr 19, 2016 by jcolao

Hello,

I'm using an AD7328 with external 3V reference. When I try to read the temperature register I get values that, while quite near, do not match those shown in the data sheet.

I found no data for the case of external reference, nor any formula to translate between values read and temperature. How can I interpret the readings?

Another problem I have with the chip is that when I set mode 3 (0-10V) in the range registers, the values I read are the same as for mode 1, suggesting that the actual range is 0-5V (6v in my case). What happens? Is the data sheet wrong?

 

A.Vignani

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