Melexis Introduces Automotive-grade 3D Hall Effect Sensor for Automotive and Industrial Applications

时间： 2021-01-27 来源：Melexis

技术问答

JUN 19, 2020 - MELEXIS announces the MLX90395 Triaxis^® Magnetometer Node, an automotive-grade (AEC-Q100) monolithic sensor that uses the Hall effect to provide contactless sensing in three dimensions. The dual-die version of the MLX90395 provides redundancy for demanding scenarios, such as gear lever position sensing in automotive applications.

The functionality of the MLX90395 is defined through the system processor, rather than hardwired into the device itself. In terms of its applicability to position sensing, it has practically unlimited scope.

The MLX90395 offers both I2C and SPI interfaces, making it simple to integrate into an automotive or industrial control environment. Both medium-field (50mT) and high-field (120mT) versions are available in three package options: SOIC-8, TSSOP-16 (dual-die for redundancy) and QFN-16 (with wettable flanks). All package options are qualified to AEC-Q100 covering the extended temperature range for -40℃ to +125℃ and are RoHS compliant.

The selectable digital output provides 16-bit resolution for X, Y and Z magnetic field measurements, enabling the host processor, DSP, microcontroller or digital signal controller to decode the absolute position of any magnet as it passes the sensor.

The MLX90395 is smaller and more power-efficient than alternative Hall effect sensors, thanks in large part to Melexis' Triaxis® technology. This innovative and proprietary technology helps return an industry-low power consumption, with an idle current of 1.4μA and standby current of 2.4μA, and supply current of 4mA or less.

Along with magnetic field sensors to measure three fields (Bx, By, Bz), the MLX90395 also integrates a temperature sensor and supply voltage monitor. Functionally, the sensor features three state machines and operates in one of three modes: single measurement, burst mode and wake-up on change mode. Engineers can select which magnetic field is measured and the frequency of measurement, to further fine-tune the sensor's energy efficiency as well as the filtering and sampling time to optimize noise vs bandwidth.

"The MLX90395 represents a new way of sensing position for the automotive and industrial markets, one that can redefine the way a wide number of applications are designed in HMI, top column, center stack and body control," commented Nick Czarnecki, Global Marketing Manager Position Sensors at Melexis. "Its strengths lie in its high sensitivity and versatility, coupled with its low power and small size. Manufacturers now have access to the very best 3D magnetic node sensing solution qualified to an automotive-grade."

Operational modes can be defined and selected at runtime through the I2C or SPI interfaces, allowing multiple sensors to form part of a sensor cluster, controlled by a single microcontroller. The bus protocol (SPI or I2C) is also selectable, running at up to 10MHz for SPI and 1MHz for I2C. Each sensor is given a unique 48-bit ID number during the manufacturing process and contains additional free space to store customer traceability information.

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【产品】微功耗汽车级3D磁场位置传感器IC MLX90395，工作温度范围-40℃~125℃、峰值采样率高达2kHz

迈来芯MLX90395 Triaxis磁性节点是一个微型传感器 IC，可感测 IC 磁通密度的三个正交分量（即，BX、BY 和 BZ）以及温度。因此，MLX90395 可侦测几乎任何移动磁体的绝对位置。这款位置传感器 IC 可用于设计面向汽车和工业应用（采用旋转、线性和摇杆运动）的新一代非接触式位置传感器。

新产品发布时间 : 2020-07-10

【产品】车规级三轴霍尔位置传感器新产品MLX90395，适配各种磁铁运动模型（360°旋转、线性位移、摇杆应用等）

迈来芯的三轴位置传感器系列产品，广泛应用于汽车档位、节气门、执行器等应用中。其中MLX90365只能做旋转和线性位移监测，摇杆应用则需要选择MLX90363来做。针对汽车日益发展的智能化需求，迈来芯推出了全新架构的三轴产品MLX90395，去掉DSP处理单元，由用户自己完成角度或者位移的计算，能匹配各种磁铁运动模型。

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【产品】Melexis推出汽车级3D霍尔效应传感器IC MLX90395，微功率磁性节点可提供非接触式3D传感功能

2020年6月19日- Melexis宣布推出 MLX90395 Triaxis® 磁力计节点，这是一款汽车级 (AEC-Q100) 单片传感器 IC，可利用霍尔效应提供三维无接触式传感功能。MLX90395 双裸片版本可实现冗余，适用于要求苛刻的场景，例如汽车应用中的变速换档杆位置传感。

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