New Dual-Output Hall-Effect Sensors Deliver Accurate Speed/Directional Data for Industrial and Automotive Applications

Diodes Incorporated has introduced a new portfolio of high-sensitivity Hall-effect sensors. Devices in the new robust AH39xxQ series provide accurate speed and directional data or two independent outputs. These sensors are designed for industrial and automotive applications such as detecting rotational and linear speed/direction and determining the angular position of a rotating shaft.

In line with automotive battery requirements, these sensors operate over a wide supply voltage range of 2.7V to 27V. They also have a 40V absolute maximum rating, enabling them to safely handle 40V load dumps. Moreover, -18V of reverse voltage protection guards against incorrect battery connections. For added robustness, the electrostatic discharge (ESD) protection provided by these devices exceed the automotive norms of 5kV human body model (HBM) and 2kV charge device model (CDM).

Three BOP/BRP options are offered, with typical values of 10/-10 gauss, 25/-25 gauss, and 75/-75 gauss, while their narrow operating window ensures accurate and reliable switching points. Dual-channel operation means these sensors can replace two latch switches, reducing PCB space and overall component costs. Combining chopper-stabilized amplifiers with an advanced Hall plate design mitigates switch point drift, ensuring accurate measurements over a broad temperature range.

Features

• Dual Latch Hall Operation with Dual Outputs (AH3968Q) or Speed & Direction Output (AH3965Q/AH3966Q/AH3967Q)

• Wide Supply Voltage Operation: 2.7V to 27V

• Chopper Stabilized Design 

• Superior Temperature Stability

• Minimal Switch Point Drift

• Enhanced Immunity to Stress

• Battery Polarity Reverse Connection Protection

• Transient Spike Voltage Protection

• UVLO Protection

• AEC-Q100 Grade 0 Qualified

Applications

• Power closures with anti-pinch features

• Rotation speed & direction detection

• Linear speed & direction detection

• Angular position detection

• Knob controls

Availability & Pricing

In 1,000-piece quantities, the AH396xQ series sensors are available at $0.40 and the AH397xQ series sensors are available at $0.44.