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LM15851: Temperature diode reading problem

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Part Number:LM15851

Hi

I'm using TMP421 with LM15851 for reading the temperature. It reads negative temperature (like -40 °C) for the remote sensor that is connected to TDIODE+/TDIODE- of LM15851. The local sensor is okay.

Also I have another TMP421 connected to a MMBT3904 and another one to a Xilinx FPGA, both remote and local temperatures of them are correct. So I'm sure that the problem is not the software.

How can I fix this problem? Should I use n-Factor Correction or something?

Regards,

Robert


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