LAN DS18B20 Temperature Monitor Resistors Scheme

 

 

KMtronic Temperature Monitor

 

For complicated or long wire lines (100-200 meters), if it is necessary,
there are two variants for compensation as shown on the figure below:

First one:
To connect parallel resistor 4.7k between +5V and 1W pin of 3pin plug-in (variant 1 of the scheme).

Second one:
To make RC filter like it's shown at variant 2 of the scheme.
You can try with 470pf and 62 or 100 Ohms resistor.

You can try variant 1 first, if there's no success - variant 2.
You can combine variant 1 and 2 but connect parallel resistor before RC filter.

 

More information

www.maximintegrated.com/en/app-notes/index.mvp/id/148

 

 

 

 

 

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