Hall effect integrated circuit current sensor MLX91221

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The MLX91221 is isolated integrated Hall-effect current-sensor with dual OCD, operating on a 3.3V supply. Top features Factory trimmed AC and DC current sensor Analog ratiometric or fixed output voltage Combining sensing element, signal conditioning & isolation in a miniature surface mount package Product description The MLX91221 is isolated integrated hall-effect current-sensor with dual OCD, operating on a 3.3V supply. It is the easiest all-in-one integrated current sensor with the right balance of small footprint, low impedance, high bandwidth, isolation and more general features. MLX91220 MLX91221 Block Diagram The MLX91221 is an integrated current Sensor that senses the current flowing through the leadframe of the package and therefore minimizes the thermal losses encountered with more standard solutions. Inside the package, the magnetic flux density generated by the current flow is sensed differentially by two sets of Hall plates. As a result the influence of external disturbing fields originating from the dense power electronics surrounding the IC is minimized. The residual signal is amplified to provide a high-speed linear analog output voltage. The close proximity of the Hall plates to the current conductor ensures a high signal-to-noise ratio and an accurate signal over temperature. With this miniaturization, high voltage isolation ratings are still maintained between the primary and their opposing secondary side leads of the package. The current sensors can operate in two measurement modes: ratiometric mode, addressing the applications mandating output voltage scaling to the supply fixed mode (differential), addressing the use of a reference voltage