MLX90366LVS-ADS-253-RX

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Position Sensors play a major role in industries which require precise measuring of physical parameters, such as angles, linear position, and so on. MLX90366LVS-ADS-253-RX, is an angle sensing device, developed by Melexis, a global supplier of micro-electronic solutions. This device is capable of measuring angle from-253/+253 degrees with 0.1 deg resolution. Its application field and working principle are discussed in this article.

Application Field: MLX90366LVS-ADS-253-RX is a highly flexible angle measuring sensor and is perfect for Space constrained Environment. It is ideal for applications such as industrial automation, medical instruments and HVAC , inorder to measure complex angle within an extended range. This device\'s built in linearity correction circuitry allows accurate angular measurements. This device can also be used in Electric Power assisted steering systems for automotive applications, since it provides an output which is linear with the input angle.

Working Principle: A Hall effect element, in the MLX90366LVSD-ADS-253-RX, senses small changes in magnetic flux in order to measure the angle. A magnet or a combination of two magnets is placed in proximity with the device. This arrangement generates the magnetic field in the vicinity of Hall effect element in the device. When there is a change in angle, the direction of the magnetic flux also changes which causes changes in voltage. This voltage level is used to calculate angle or displacement. The Hall effect element in the MLX90366LVS-ADS-253-RX, is temperature compensated which allows precise operation across the wide range of temperatures. This device also has integrated guards for protecting against the external electrical noise.

The MLX90366LVS-ADS-253-RX handles low frequency operations, making it ideal for measuring angles in industrial robots and manipulators. Its over voltage and current protection circuits, protect the device from excessive power supply or ESD currents. This device also integrates an 12 bit ADC, measuring the magnetic field and converting the data into a 2-wire digital signal(SPI based). The integrated analog back ground calibration feature helps in caliabrating the device in regular intervals and helps in maintaining the accuracy and sensitivity of the sensing device.

The MLX90366LVS-ADS-253-RX is integrated with diagnostic capabilities, error status signals and features like adjustable speed range, temperature compensation and adjustable resolution for precise operation. The diagnostic feature helps in monitoring the device health and helps in identifying possible faults. This feature allows the device to be more reliable and hence critical applications like safety, can benefit from the usage of the device.

The MLX90366LVS-ADS-253-RX is an ultra low power consuming and low cost device. Its operating current range from 5uA to 80mA, and its supply voltage ranges from 1.7 to 5.5V, making it an ideal choice in automated process monitoring systems. Its on board EEPROM helps to store calibration data and various configurations. This device also comes with internal clock generator and oscillator, for accurate clock timing.

To summarise, the MLX90366LVS-ADS-253-RX is a miniature angle measuring device, ideal for use in space constrained environment. Its integrated magnetic sensing element, works on the principle of hall effect to measure the angle. The internal compensation circuitry, diagnostic capabilities and ultra low operating current range, are useful features, which makes this device ideal for use in safety critical industrial applications.

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