Allegro Current Sensor Distributor | Hall-Effect Isolated ICs

BeiLuo supplies genuine Allegro MicroSystems current sensor ICs, the integrated Hall-effect devices that measure AC or DC current without a shunt and with galvanic isolation. An Allegro current sensor places a low-resistance copper conduction path on the die next to a Hall transducer, so the current's magnetic field is sensed directly and converted into a proportional output voltage; the chopper-stabilized BiCMOS circuit is programmed for accuracy after packaging, which gives a low offset, a nearly zero magnetic hysteresis and a stable output over temperature. The ACS712 family provides 2.4 kVRMS isolation between the current path and the signal path, an internal conductor resistance of about 1.2 mOhm, a bandwidth up to 80 kHz and a total output error of about 1.5 percent at room temperature, with single 5 V supply operation and a ratiometric output, in a compact 8-pin SOIC package. The devices come in 5 A, 20 A and 30 A versions with sensitivities of 185, 100 and 66 mV/A, so a designer can match the range and the resolution to the application. Typical uses include motor control, load detection and management, switched-mode power supplies, overcurrent fault protection, and battery and inverter current monitoring. Every sensor BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you choose the current range, the sensitivity and the layout, and plan the isolation and the accuracy over temperature.