The MCS1803 is a linear Hall-effect current sensor for AC or DC current sensing. The Hall array is differential, which cancels out any stray magnetic field.
A primary conductor with a low resistance allows current to flow close to the IC, which contains high-accuracy Hall-effect sensors. This current generates a magnetic field that is sensed at two different points by the integrated Hall-effect transducers. The magnetic field difference between these two points is then converted into a voltage that is proportional to the applied current. A spinning current technique is used for a low stable offset.
The galvanic isolation between the pins of the primary conductive path and the sensor leads allows the MCS1803 to replace opto-isolators or other isolation devices.
The MCS1803 requires a minimal number of readily available, standard external components. The device’s small footprint saves board area and makes it well-suited for space-constrained applications. The MCS1803 is available in an SOIC-8 package.
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The EVCS180X-S-Y-00A is an evaluation board designed to demonstrate the capabilities of the MCS180x family, which are linear Hall-effect current sensors for AC and DC current sensing. The Hall array is differential, which cancels out stray magnetic fields. The MCS180x series provides two power supply options (3.3V or 5V), and six full current ranges between 5A and 50A for the best accuracy across different applications.
The output voltage (VOUT) is proportional to the primary applied current flowing through the primary conductor. The galvanic isolation between the primary conductive path pins and the sensor leads allow the MCS180x to replace optoisolators or other expensive isolation devices. The MCS180x is available in an SOIC-8 package.