To address these shortcomings, the MLX91210 offers a fully integrated and factory calibrated Hall-based solution which provides fast and accurate results. It combines the sensing element, signal conditioning and voltage isolation in a single SMD package.

Ideal for modern and compact applications, this "Plug and Power" concept does not need any additional components such as a shunt resistor or ferromagnetic core. The fast analog output is proportional to the AC or DC current flowing through the leadframe of the IC. No calibration is required in the application.

Inside the package, the magnetic flux density is sensed differentially by two sets of Hall plates giving excellent stray-field immunity. The close proximity of the Hall plates to the current conductor overcomes the absence of a ferromagnetic concentrator and the factory calibration ensures an accurate signal over temperature.

The small form factor of the surface mount sensors saves board space and cost, while maintaining basic isolation ratings as high as 2.5kVAC between the primary and secondary side package leads.