The ICs have been designed to offer high sensitivity and high stability over wide operating voltage and temperature ranges.
The ICs are intended to be used in automotive proximity- and position-sensing applications. Using two-wire hall switches cuts the amount of wires that are required in the harness, which provides a saving on system complexity and cost, while also being more resilliant to electrical noise.
The AH324xQ and AH328xQ feature integrated self-diagnostics to continually monitor the main device blocks, supply voltage, and temperature. A third output state is available to warn of any abnormal conditions. The devices are ISO 26262 ASIL-B ready, due to being designed using rigorous design processes and safety analysis being conducted in accordance with the ISO 26262 standard.
While developing the switches, Diodes used an advanced chopper-stabilized design to provide 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, along with a high ESD rating of 8kV, built-in reverse blocking diode, and supply pin Zener clamp, allows the AH32xxQ series to meet the demanding requirements of automotive proximity/position-sensing applications.
All AH32xxQ devices are manufactured in an SC59 package. They are qualified to AEC-Q100, manufactured in IATF 16949 certified facilities, and support PPAP documentation. The AH324xQ and AH328xQ have a unit price starting at $0.40 in 3000 piece quantities, while the AH323xQ and AH327xQ start at $0.36 in 3000 piece quantities.