Micropower Hall Sensors Ideal for Battery-powered Devices

hall-effect sensors

Ultra-low power Hall-effect sensors from Diodes Incorporated meet the essentials of battery-powered consumer products, such as gas or water meter, smoke detectors and IoT devices. 

Diodes Incorporated has unveiled the AH1911 and AH1921 digital Hall Effect sensors, which combine stable operating and release points (BOP and BRP) with ultra-low power operation. The 3rd generation devices will respond to either polarity of magnetic field. Thanks to the hibernating clocking system, the average supply current is only 1.6μA at 3V, according to the company.

This makes the AH1911 and AH1921 ideal for battery-powered devices where its ultra-low power consumption and wider operating voltage range promote extended battery life. Typical applications include medical and consumer products, tamper detection for e-meters, smoke detectors, IoT devices and general level/proximity detection.

New Hall-effect sensors offer stability over wide operating range


A wide operating voltage range of 1.6V to 5.5V enables the parts to be used with a variety of system voltages. Operating and release points for the magnetic switch are tightly controlled over temperature and supply voltage, thanks to its advanced stabilizing technique that deliver accurate and repeatable performance. Flux density switching points are typically ±60 Gauss (6mT) to operate and ±45 Gauss (4.5mT) to release.

Available in the industry-standard three-pin SC59 package, the AH1911 and AH1921 feature push-pull and open-drain outputs, respectively.

Both are specified to operate over the -40°C to +85°C temperature range and have a high ESD rating of 6kV (Human Body Model).

“These sensors, with their stable BOP/BRP and ultra-low power consumption, provide market-leading performance at the best cost/performance ratio,” said Charles Kuo, worldwide sensor marketing manager for Diodes Incorporated.

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Further information is available at www.diodes.com.




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