MXD6235MP-B

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Evaluation boards, or also known as development boards, are essential equipment when it comes to electronic and engineering design. As for sensors, specifically for the MXD6235MP-B, they are used to detect pressure changes within a closed system. The MXD6235MP-B is a sensing module solution which incorporates a pressure sensor, signal conditioning circuitry, and an I2C compatible digital interface into a single package. Evaluation boards are made to make projects involving MXD6235MP-B simpler.

The MXD6235MP-B pressure sensor is a capacitive sensing element integrated with an ASIC signal conditioning IC and an onboard temperature sensor. The pressure sensor is an electrostatic capacitance type with a digitally compensated measuring range of 0 to 4 bar. Its pressure range is 2.25 to 4 bar and its operating temperature range is -40 to 125 degrees Celsius. The ASIC is a low power 8-bit signal conditioning IC with a 10-bit digital output.

The evaluation board provides the user a complete reference design for the MXD6235MP-B pressure sensor. The board contains an I2C compatible interface, voltage regulation, and an onboard temperature sensor. The evaluation board allows the user to easily access the sensor information via I2C and display the reading via an optional LCD. It also contains configurable pins to enable different signal types out of the sensor and allows for the user to apply different sampling times. Additionally, the evaluation board can be powered by any power source between 3.3V and 5.5V.

The working principle of the MXD6235MP-B is based on the piezoresistive effect. The pressure sensor is made from a silicon substrate and includes an array of individual, isolated, stress sensitive resistors. When pressure is applied to the sensor, the individual resistors’ resistance changes. These changes are then converted to an analog output voltage by the ASIC. The temperature signal can then be used to correct any thermal induced error and the output is converted to a digital signal. Finally, the I2C interface allows the user to read the digital output via the evaluation board.

The MXD6235MP-B’s application fields include automotive, medical, automation, and factory equipment and processes. It can measure and detect the pressure of liquids, gases, and vapors. Additionally, it can detect pressure changes in hydraulic systems and pneumatic systems to help trigger alarms or activate other components. The module can also be used as part of an oxygen concentrator system or to detect pressure drops in engines.

In conclusion, the MXD6235MP-B is an excellent pressure sensor module with many applications and the evaluation board simplifies the usage of the module. The overview in this article should provide the reader with an understanding of the MXD6235MP-B pressure sensor and its working principle as well as some of its application fields.

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