MCS1802

MCS1802 3.3V, Linear Hall-Effect Current Sensor with ±2.5% Accuracy Over Temperature DESCRIPTION The MCS1802 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 and stable offset. The galvanic isolation between the pins of the primary conductive path and the sensor leads allows the MCS1802 to replace opto-isolators or other isolation devices. The MCS1802 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 MCS1802 is available in an SOIC-8 package. FEATURES 3.3V Single Supply Immune to External Magnetic Fields by Differential Sensing 2.2kVRMS Minimum Isolation Voltage Operating Temperature: -40°C to +125°C 0.9mΩ Internal Conductor Resistance ±5A to ±50A Bi-directional Range Adjustable Bandwidth up to 100kHz 4μs Output Rising Time Ratiometric Output from Supply Voltage Output Proportional to AC or DC Curr...