The Smallest Contactless Current Sensor With Minimum Power Loss

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ROHM presents contactless current sensors with minimum powerloss

ROHM developed a current sensor utilizing a high sensitivity low current MI element that allows for completely contactless current detection. The BM14270MUV-LB was developed by combining ROHM’s industry-leading semiconductor production and sensor control technologies with Aichi Steel’s MI (Magneto-Impedance) element. The result is a contactless current sensor that eliminates the need to draw current within the sensor to measure it. The sensor itself consumes very low current (0.07mA – 100x smaller than conventional products) and comes in the industry’s smallest size (3.5mm square). In addition, a disturbance magnetic field cancellation function is included to protect against noise, making shielding unnecessary. Digital output from the built-in A/D converter reduces MCU load, facilitating current monitoring. These features allow users to easily detect the current of virtually any application with high reliability, from compact battery-driven devices to high power industrial equipment.

Key features

1.Contactless current detection  with minimum power loss

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2. Compact, ultra-low-current design optimized for battery-driven devices.

3.Built-in disturbance magnetic field cancellation function eliminates the need for shielding

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