SSCSDRN025MD2A5

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Pressure sensors and transducers are designed to measure pressure in systems, often to control their function. The SSCSDRN025MD2A5, manufactured by Freescale Semiconductor, is a pressure transducer intended for applications such as automotive message seats, air valves, and active suspensions.

The SSCSDRN025MD2A5 is a MEMS (Micro Electro-Mechanical System) capacitive pressure sensing device designed to measure absolute pressure in a range from 0 to 250 kPa. This is accomplished by suspending a silicon diaphragm between two electrodes inside a silicon package. One of the electrodes is a drive plate, which provides a reference pressure to the diaphragm. The other electrode acts as a sense plate, generating an output capacitance that is proportional to the applied pressure.

As pressure is applied to the sensor, the diaphragm deflects, causing a displacement of the electrodes. This increases the gap between the drive and sense plates, reducing the capacitance of the sense plate. The SSCSDRN025MD2A5 has a very small gap, allowing for very accurate pressure measurements.

The maximum deflection of the diaphragm at 250 kPa is only 0.3 microns, allowing the device to be used in high-electromagnetic interference (EMI) environments typical in automotive applications. In addition, the SSCSDRN025MD2A5 has a low current consumption of under 2 mA, making it ideal for battery-powered applications. The device also features a self-test function, helping to verify that the sensor is working correctly.

The SSCSDRN025MD2A5 is a fully-integrated device, incorporating a membrane, sensing element, signal conditioning, and EMI protection in a single package. This makes it ideal for applications where space is limited. The device also features a 10-bit digital output, providing a high resolution output signal that can be directly connected to a microcontroller. The main features of the SSCSDRN025MD2A5 include a low power consumption, a fast response time of 0.3 μs, and a wide operating temperature range of -40°C to +125°C.

The SSCSDRN025MD2A5 is an ideal choice for automotive sensing applications, thanks to its robust design and integrated signal conditioning. It can be used to measure pressure in air valves, seats, and active suspensions, helping to control their functions. It can also be used in any environment where small and accurate pressure measurements are required.

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