SCA121T-D03

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Motion Sensors - Inclinometers - SCA121T-D03 application field and working principle

Inclinometers are devices used to measure the tilt angle or inclination of an object with respect to its environment. They are commonly used in applications such as machine health monitoring, robotics, construction, avionics, automotive, and agriculture. The SCA121T-D03 inclinometer from TDK is a compact, low-power tilt sensor module capable of measuring tilt angles with an accuracy of 0.05 degrees in both the X- and Y-axes.

The SCA121T-D03 inclinometer is designed for applications in which two-axis tilt angle sensing is necessary. It features a locked contact detector function, which helps reduce power consumption when the measured tilt angle is constant or near a predetermined angle. The inclinometer measures tilt angles in both the X- and Y-axes with an accuracy of 0.05 degrees. The SCA121T-D03 has two output channels, one for each X- and Y-axis, and each channel has its own analog-to-digital conversion (ADC) for data processing. The SCA121T-D03 has a low-power operation mode, allowing it to be powered by battery, and energy efficient wake-up and sleep-mode functions to help maintain battery life.

The SCA121T-D03 utilizes a unique type of MEMS (Micro-Electro-Mechanical System) technology that combines two capacitive sensors, one for each axis. The MEMS technology allows for low-power operation, fast response time, and high accuracy, ideal for applications such as machine health monitoring or robotics. The signal processor can detect both static and dynamic tilt angles, and the device will produce a response when the tilt angle is greater than +-5° from the initial angle.

The SCA121T-D03 is equipped with a digital interface that can interface with the SPI (Serial Peripheral Interface) bus or I2C (Inter-Integrated Circuit) bus. The digital interface allows for easy and fast data transmission between the sensor and the host microprocessor. The sensor is also equipped with an I2C based temperature compensation circuit that helps ensure reliability and accuracy in even the harshest environments and temperatures.

The SCA121T-D03 is built into a robust housing and has an integrated shock and vibration isolation system. The device can withstand shock up to 3500g and vibration up to 20g@100Hz. The device is rated for a working temperature range between -40°C and 125°C and is also immune to EMI according to EN 61000-3-2 standards.

In conclusion, the SCA121T-D03 is a low-power, two-axis inclinometer suitable for embedded applications in which tilt angle sensing is necessary. The device is equipped with an I2C temperature compensation circuit and a digital interface and can withstand shocks up to 3500g and vibration up to 20g@100Hz, making it ideal for harsh environment and temperature applications. The device features a locked contact detector function to reduce power consumption when the measured tilt angle is constant or near a predetermined angle, and has a working temperature range of -40°C to 125°C.

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