ACHS-7191 Datasheet | Broadcom

ACHS-719x Fully Integrated, Hall-Effect Based Linear Current Sensor IC with 3 k VRMS Isolation and a Low-Resistance Current Conductor Data Sheet Description The Broad® ACHS-719x (±10A to ±50A) fully integrated Hall-effect based isolated linear current sensors are designed for AC or DC current sensing in industrial, mercial, and munications systems. Inside each ACHS-719x IC is a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field that the differential Hall sensors convert into a proportional voltage. Device accuracy is optimized across the operating ambient temperature through the close proximity of the magnetic signal to the Hall sensors. A precise, proportional voltage is provided by the low-offset, chopper-stabilized CMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope (>VOUT(Q)) when an increasing current flows through the primary copper conduction path (from pins 1 and 2 to pins 3 and 4), which is the path used for current sampling. The internal resistance of this conductive path is 0.7 mΩ typical, providing low power loss. The terminals of the conductive path are electrically isolated from the signal leads (pins 5 through 8). This performance is delivered in a pact, surface mountable, SO-8 package that meets worldwide regulatory safety standards. Features - Wide operating temperature: - 40ºC to +110ºC - Internal conductor resistance: 0.7 mΩ typ. - Sensing current range: ± 10A ~ ± 50A - Output sensitivity: 40 m V/A to 185 m V/A - Output voltage proportional to AC or DC currents - Ratiometric output from supply voltage - Single supply operation: 5.0V - Low-noise analog signal path - Device bandwidth is set via the new FILTER pin - 80 k Hz typ. bandwidth with 1-n F filter capacitor - Factory-trimmed for accuracy - Extremely stable output offset voltage -...