MPXA4100AC6U

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Pressure sensors and transducers are devices used to measure pressure. There are many types of pressure sensors and transducers, one of which is the MPXA4100AC6U. The purpose of this article is to explain the application field and working principle for the MPXA4100AC6U.

The MPXA4100AC6U is a Piezoresistive Absolute Pressure Sensor designed for use in industrial, commercial, and automotive applications. It is suitable for gas and liquid pressures and is particularly useful for applications such as hydraulic and pneumatic systems, and fuel injection systems. The MPXA4100AC6U is capable of measuring pressure in the range of 0 to 100 bar absolute (14.50 psi to 1450 psi). It combines a high level of accuracy and low power consumption into a small package. The device is packaged in a 5mm x 5mm QFN package for use in surface mount designs.

The operating principle of MPXA4100AC6U relies on a Wheatstone bridge network constructed with Piezoresistive elements. These elements detect the change in resistance caused by the applied pressure that is converted to a voltage output signal. The bridge circuit is composed of four individual bridge arms that are connected to two sets of current sinking and sourcing pins. The current is generated by an external supply connected to the bridge bias pins on the device. The current flows through each arm thus creating a differential resistance. The output voltage is proportional to the applied pressure and is measured between the output pins, which are connected to the sensing elements.

The MPXA4100AC6U is designed to operate in a wide range of environmental conditions and is qualified for automotive AEC-Q100 level 2. The device has a temperature compensated operating temperature range of -40°C to 125°C and its wide range of over- and under- pressure limits are specified up to ±200% of the nominal range. The output accuracy is specified for a reference pressure of 15 psi (1 bar) and is limited to 0.5% full-scale, 4 mV offset, linearity, hysteresis, and temperature effects. The device also features built-in self-diagnostic and self-calibration functions.

The MPXA4100AC6U is an advanced pressure sensor that is suitable for a variety of application fields. Its small size and low power consumption make it a valuable addition in designs where space and power are limited. The device offers high accuracy performance and is designed to withstand tough environmental conditions, making it a reliable solution for automotive and industrial applications.

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