Piezoresistive pressure sensor bridge arm series and parallel resistors

Generally in the bridge arm piezoresistive pressure sensor or thermistor series and parallel resistors and other methods to achieve the already packaged piezoresistive pressure sensor temperature compensation. The drawback of this method is to be used only for the case of low precision. As compensation resistor and the pressure sensor Wheatstone bridge resistivity inconsistent test is also more difficult, so no matter what the temperature compensation methods can not achieve good results, for demanding applications such compensation is difficult to achieve. Therefore, Camshaft Position Sensor temperature compensation has been troubled by the user's problem, and also the research and production of pressure sensors is a key technical issue.Followed by the micro-pressure, low pressure sensor manufacturing technology and process is relatively high, are involved in manufacturing equipment is very expensive. Low rangeAutomotive Temperature Sensors market is now relatively small, expensive. In contrast, high pressure range sensor manufacturing costs are relatively low. Therefore, the micro-pressure, low pressure sensor accuracy and price is user concern.Finally, the pressure sensor wafer packaging technology has become a bottleneck in production. Therefore, the reliability of Crank Shaft Position Sensor package is user concern arises. Now more and more customers tend to choose capacitive pressure sensor.