A portfolio of high-sensitivity Hall-effect sensors make up theAH39xxQ. The robust sensors provide speed and directional data or two independent outputs. They are designed for industrial and automotive applications such as detecting rotational and linear speed/direction and determining the angular position of a rotating shaft.

To align with automotive battery requirements, the dual output Hall-effect sensors operate over a wide supply voltage range of 2.7 to 27V. They also have a 40V absolute maximum rating in order to safely handle 40V load dumps. There is also -18V of reverse voltage protection to guard against incorrect battery connections. The electrostatic discharge (ESD) protection exceeds the automotive norms of 5kV human body model (HBM) and 2kV charge device model (CDM).

Three operating and release (BOP/BRP) options are available, with typical values of 10/-10 gauss, 25/-25 gauss and 75/-75 gauss. The narrow operating window ensures accurate and reliable switching points, says the company.

Dual-channel operation means the sensors can replace two latch switches, reducing PCB space and overall component costs. Combining chopper-stabilised amplifiers with an advanced Hall plate design mitigates switch point drift, says Diodes, to ensure accurate measurements over a broad temperature range.

There are also self-diagnostic features making them suitable for ISO 26262-compliant systems. The devices enter a safe operating mode if an error, such as over-temperature or under-voltage lockout, is detected.

The AH39xxQ series Hall-effect sensors from Diodes are AEC-Q100 Grade 0 qualified and manufactured in IATF 16949 certified facilities. They support PPAP (production part approval process) documentation and are supplied in TSOT25 packages.

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