XTR108 circuit diagram of a three-wire RTD connection


Posted on Mar 28, 2007

Shown for the XTR108 three-wire RTD connection circuit. Sensor connection RTD lead resistance may introduce errors. Using the figure


XTR108 circuit diagram of a three-wire RTD connection
Click here to download the full size of the above Circuit.

and 2 connection, if "1" and "2" to XTR108 lead length as the lead resistance, as the size and direction of the interference introduced too. This interference belong to the common mode voltage, common-mode voltage can be suppressed by XTR108 the PGA. The circuit has five selectable temperature range, i.e., by selecting R21 ~ R25 to select five different minimum temperature characteristics.




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