Pressure sensors
Fundamentals
Functionality of a MEMS Pressure Sensor
A MEMS pressure sensor is based on a thin membrane. Typically two principles are used. The first principle is based on a change in resistance of integrated resistors caused by the deflection of the membrane. The second principle is based on a capacitive effect: a counter electrode is located below the membrane and based on the deflection of the membrane, the distance and thus the capacitance is changed. WSEN-PADS and WSENPDUS are based on piezo-resistive principle. A MEMS pressure sensor is more expensive in comparsion to a MEMS Acceleration Sensor due to:
- Direct contact to the environment
- Packaging is more complex
Which pressure sensor do I need?
If you want to read more find here the whole Product Guide.