Allegro MicroSystems, Inc. announces the next generation in Hall-effect current sensing technology.  Allegro’s ACS756 is a low noise, open-loop current sensor with a 125 KHz bandwidth capability. The enhanced accuracy and speed make this device suitable for a variety of 50 A to 100 A applications. This new device takes advantage of the low loss leadframe of our “CA” package and the fast response capability of an integrated core.
Allegro’s new ACS756 also has an internal electrostatic shield. The electrostatic shield effectively shunts the effects of voltage transient spikes around the silicon and minimizes the voltage ripple on the output of the device. The result is a high performance current sensing solution suitable for motor and inverter control, power supply control and protection, and other applications requiring high side current sensing.
Targeted at the industrial and consumer markets, Allegro’s ACS756 is priced at $3.16 in quantities of 1,000 and has a 12-14 week typical lead-time to market.


* Industry-leading noise performance through proprietary amplifier and filter design techniques * Total output error 0.8% at TA = 25°C * Small package size, with easy mounting capability * Monolithic Hall IC for high reliability * Ultra-low power loss: 130 µΩ internal conductor resistance * 3 kVRMS minimum isolation voltage from pins 1-3 to pins 4-5 * 3.0 to 5.0 V, single supply operation * 3 μs output rise time in response to step input current * 20 or 40 mV/A output sensitivity * Output voltage proportional to AC or DC currents * Factory-trimmed for accuracy * Extremely stable output offset voltage * Nearly zero magnetic hysteresis
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