TEKNIK ELEKTRONIKA

The  Melexis MLX91206 is a customer programmable monolithic current sensor featuring TriaxisTM Hall technology. Designed to directly sense the current flowing in an external conductor, such as a bus bar or PCB track, the IC enables users to design small, economical current monitoring solutions with fast response times. 

The MLX91206 contactless current sensor consists of a CMOS Hall-effect integrated circuit with a thin ferromagnetic layer on its surface. The integrated ferromagnetic layer acts as a magnetic flux concentrator, significantly increasing the signal to noise ratio of the sensor. It senses current by converting the magnetic field generated by the current flowing through the  conductor to a voltage proportional to the magnetic field. There is no upper limit to the measurable current level because the output level is dependant on the conductor size and distance from the sensor.

 

The MLX91206 sensor is especially suitable for DC and/or AC current measurements up to 90 kHz in applications that require galvanic isolation, very low insertion loss, fast response time, small package size and low assembly cost. It includes overvoltage and reverse voltage protection, including broken track diagnostics, and can be used as a stand-alone current sensor connected directly to a cable.

The characteristics (offset, gain, clamping levels and more) of the MLX91206 are fully customer programmable. A choice of linear (analogue) and PWM outputs is available. The linear output is suitable for applications requiring fast response (less than 10 μs), while the PWM output is suitable for applications that do not need high speed but do require high output signal robustness. A thermometer output signal monitors ambient temperature.

Calibration can be performed after the sensor is attached to the conductor. Typical accuracy is better than

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