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Planar-type Hall-effect sensors

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MagnaChip Semiconductor now offers planar-type Hall-effect sensors for foundry customers.

The Hall-effect sensor has been adopted by the market for an increasing number of applications, such as the closed-loop auto focus feature of smartphone cameras.

The Hall-effect sensor is suitable for high sensitivity and low-corner frequency, and features 50µm x 50µm in size. It offers Hall resistance of 2.4K ohms, sensitivity of 44.5mV/VT and a corner frequency of 500Hz. It is recognised for its robustness and stability against noise. 

The Hall-effect sensor can be easily integrated into a customer’s design by adding only one mask to various processes that a foundry already offers. In addition, the integration of the Hall-effect sensors can be made without making any changes in electrical characteristics and is offered regardless of the technology node, ranging from 0.13µm to 0.35µm. The process design kit provides P-cell and Verilog-A model, with availability to a temperature of up to 150ºC to ensure a wider use in diverse applications, such as the fast growing IoT and automotive markets.

MagnaChip is also developing a vertical Hall-effect sensor with the direction of the magnetic field being parallel to the silicon surface, which will enable three-dimensional Hall sensing capabilities. The sensor will be usable in a wide range of applications, including proximity switching, positioning, speed detection and current sensing applications. 

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