MAGNETIC IMPEDANCE DEVICE, SENSOR APPARATUS USING THE SAME AND METHOD FOR MANUFACTURING THE SAME, ENABLING USER TO MANUFACTURE THE SENSOR DEVICE HAVING GOOD HEAT-RESISTANCE WITH LESS MANUFACTURING COST

摘要

PURPOSE: A magnetic impedance device, a sensor apparatus using the same and a method for manufacturing the same are provided to prevent a sensitivity of elements from being deteriorated even when the magnetic impedance device is treated with high temperature. CONSTITUTION: A semiconductor substrate(22) is provided in a magnetic sensor. A magnetic impedance device detects a magnetic field around it. The magnetic impedance device is disposed on the substrate. A peripheral circuit is included in the magnetic sensor in order to process an output signal outputted from the magnetic impedance device. The peripheral circuit is disposed on the substrate. A wiring layer made of aluminum material is included in the magnetic sensor. The wiring layer is connected to both ends of the magnetic impedance device. The wiring layer has a pair of ends, which is disposed on a connection portion between the wiring layer and the magnetic impedance device.