Allegro Microsystems Announces New High Speed/Low Noise Hall-Effect Current Sensor

Allegro MicroSystems, Inc. announced what it describes as 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 to 100A applications. This new device is said to take advantage of the low loss leadframe of the company’s "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 said to be 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.