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The MCS1800GS-25 is a 3.3V linear Hall effect current sensor with an accuracy of ±3% over a wide temperature range.

Circuit diagram

Description:

The MCS1800 is a linear Hall effect current sensor for AC or DC current sampling. The Hall sensor array is differential and can cancel out any stray magnetic field. The primary side conductor with low resistance allows current to flow near the IC containing a high-precision Hall-effect sensor. This current generates a magnetic field, which is induced by an integrated Hall effect sensor at two different points. The magnetic field difference between the two points is then converted into a voltage proportional to the applied current.

The rotating current technique is suitable for low-stability migration applications. Current isolation is achieved between the pins of the dominant electrical path and the sensor lead, so the MCS1800 can replace optical isolators or other isolation devices. The MCS1800 minimizes the use of existing standard external components. The device's small size package saves board space, making it ideal for space-constrained applications.

Features

3.3V single power supply

The differential sensing method is adopted to avoid external magnetic field interference

200VRMS operating voltage for basic isolation

Operating temperature range: -40°C to +125°C

1.2mΩ internal on-resistance

±12.5A and ±25A ranges

Adjustable bandwidth up to 100 kHz

4μs output rise time

The power supply voltage is output in ratio

The output is proportional to the AC or DC current

Accuracy is factory calibrated

No hysteresis

Integrated shielding between current conductor and wafer inhibits capacitive coupling (up to 10V/ns)

SOIC-8 package

Applications

• Motor control

• Automotive Systems

• Load detection and management

• Switching mode power supply

• Overcurrent fault protection