Medical devices and methods for making and using medical devices are disclosed. An example electrophysiology medical device may include a catheter shaft including a distal end portion and a sensing assembly having three or more terminals. The sensing assembly includes one or more current carrying electrodes and one or more sensing electrodes. The one or more current carrying electrodes the one or more sensing electrodes or both includes a mini electrode. The mini electrode is disposed on one of the other electrodes. The medical device may also include a controller coupled to the sensing assembly.
