MLX90251EVA-FAA-300-BU

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The MLX90251EVA-FAA-300-BU is a Magnetic Sensor IC specifically designed for automotive applications. It is designed to detect changes in the local magnetic field, and can be used for applications such as car navigation and in-car entertainment systems. The device is based on the classic AMR (anisotropic magneto-resistive) technology and operates at temperatures from -30°C to +105°C.

The device features a power-down mode with exceptionally low current consumption, as well as configurable sampling rate and orientation detection intervals. It is also optimised for the detection of low level magnetic fields, with a noise floor of 10µT. Combined with its small size and light weight – only 1.5mm x 1.5mm and 0.09g – the MLX90251EVA-FAA-300-BU is ideal for space-constrained automotive applications.

The MLX90251EVA-FAA-300-BU consists of two AMR sensing elements arranged orthogonally to each other. The device measures the difference between the two variables and outputs the information as a one-dimensional vector. It also supports a range of output modes, including an average mode and a detection mode for low frequency signals.

The device is highly accurate and consistent, with an offset of 30µT and a sensitivity of 10µT per bit. It features a reset input pin for easy system management, and a digital low-pass filter to reduce the noise level. The output of the filter is available through the I2C interface.

The MLX90251EVA-FAA-300-BU can also detect the angle of the magnetic field relative to the device. This information can be used to determine the direction of a vehicle or the heading of a golf ball. The device supports two orientation detection modes – FAST and SMART. In FAST mode, the orientation angle is determined once every 64 samples, and in SMART mode, the orientation angle is determined once every 32 samples. The device also supports a Polarisation Strength Detection (PSD) mode, which can be used to measure the strength of the magnetic field.

The MLX90251EVA-FAA-300-BU is an ideal choice for automotive applications, thanks to its small size, high accuracy and low power consumption. With its wide temperature range and range of output modes, the device is able to detect low level magnetic fields in even the harshest environments.

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