BMA020 Sensors, Transducers

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Motion sensors are an essential part of modern life, with a wide range of applications in the automobile, aviation, medical, industrial, and consumer electronics industries. Accelerometers are an important type of motion sensor that measure acceleration along one or more axes. One example is the BMA020 Accelerometer, an ultra-low power, low-g 3-axis digital 4-wire accelerometer.

The BMA020 is a highly configurable accelerometer, providing a wide range of applications. It is designed to provide reliable linear acceleration and tilt angle measurements with low power consumption and minimal noise interference. It has a measurement range of ±30g, a resolution of 0.03g, and a high sensitivity of <e;1.8mV/g @ 1kHz. It has a low temperature coefficient and a wide operating temperature range, making it ideal for low-cost motion sensing applications in the embedded market.

The BMA020 is suitable for a wide range of applications, including automotive safety systems; airbag, rollover, and crash detection; occupant sensing; and home-enhanced navigation. It can also be used in sports and health monitoring devices, such as activity trackers, smart watches, and fitness activity monitors. In these applications, the BMA020 can measure acceleration, inclination, and angular rotation, as well as ambient vibration and shocks.

The BMA020 accelerometer works on the principle of a variable capacitance. It consists of two piezoelectric membranes, one fixed and one movable, which are separated by a spacer. When the spacer moves, the capacitance between the two plates changes. This change in capacitance is measured by the integrated capacitor circuit, which converts it into a voltage signal. This voltage signal is then converted into acceleration, inclination, or angular rotation data, depending on the application.

The BMA020 accelerometer has a built-in temperature sensor that enables it to measure acceleration and inclination even in extreme temperature environments. It also has an integrated algorithm that ensures accuracy and stability. The BMA020 is highly configurable, with an adjustable data output rate, a range of power modes, and the ability to program upper and lower thresholds. This makes it an excellent choice for low-cost, energy-efficient motion sensing.

In short, the BMA020 is a highly configurable, low-power, low-g accelerometer designed for use in applications such as automotive safety systems, sports and health monitoring devices, and home-enhanced navigation systems. It offers a wide measurement range, high sensitivity, and a number of configurable features, making it an ideal choice for low-cost motion sensing.

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