comment on this article

Two-wire Hall Effect switches come with self-diagnostics

Diodes has announced a family of automotive-compliant, two-wire unipolar (AH323xQ/4xQ) and latch (AH327xQ/8xQ) switch integrated circuits (ICs).

Designed to provide high sensitivity and high stability over wide operating voltage and temperature ranges, the ICs are for use in automotive proximity- and position-sensing applications, including seatbelt buckle, power window, gear selector and seat position.

The adoption of two-wire hall switches reduces the number of wires required in the harness, saving on system complexity and cost while improving robustness to electrical noise.

The AH324xQ and AH328xQ have integrated self-diagnostics which continually monitor the main device blocks, supply voltage, and temperature. There is a third output state that warns of an abnormal condition. These devices are ISO 26262 ASIL-B ready, having been developed using rigorous design processes with safety analysis conducted in accordance with the ISO 26262 standard.

Diodes adopted an advanced chopper stabilized design, which provides superior stability of the magnetic operating and release points (BOP/BRP) over the 2.7V to 27V operating voltage and -40˚C to +150˚C temperature range. This stability, coupled with a high ESD rating of 8kV, built-in reverse blocking diode, and supply pin Zener clamp, enables the AH32xxQ series to meet the demanding requirements of automotive proximity/position-sensing applications.

All AH32xxQ devices are supplied in the SC59 package. They are qualified to AEC-Q100, manufactured in IATF 16949 certified facilities, and support PPAP documentation.

Author
Neil Tyler

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Truck platooning

All around the country, at all times of the day, 365 days a year, commercial ...

Custom MMIC design

Plextek RFI CEO Liam Devlin discusses the technical and commercial ...

Ethical Concerns

Kyle Dent talks New Electronics through some of the ethical issues that have to ...

On the charge

The UK throws away around 600 million household batteries every year, with ...