Datasheet ZXCT1010 (Diodes) - 6

A Product Line of Diodes Incorporated ZXCT1010 Application Information
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Bi-Directional Transfer Function: PCB Trace Shunt Resistor for Low Cost Solution:
The figure below shows output characteristics of the device when using a PCB resistive trace for a low cost solution in replacement for a conventional shunt resistor. The graph shows the linear rise in voltage across the resistor due to the PTC of the material and demonstrates how this rise in resistance value over temperature compensates for the NTC of the device. The figure opposite shows a PCB layout suggestion. The resistor section is 25mm x 0.25mm giving approximately 150mΩ using 1oz copper. The data for the normalized graph was obtained using a 1A load current and a 100Ω output resistor. An electronic version of the PCB layout is available by request. ZXCT1010 6 of 8 March 2014 Document number: DS33442 Rev. 11 - 2
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