Dual die, Hall effect, latch and switch sensor is accurate & redundant
Graham Prophet @ eedesignnewseurope.com discuss about Melexis magnetic latch and switch sensors. He writes:
Melexis (Tessenderlo, Belgium) has introduced a range of new magnetic latch and switch sensors that feature two silicon dice in the same package, yielding highly reliable devices, which are aimed at automotive applications including transmission, power steering, braking and locks/latches.
Dual die, Hall effect, latch and switch sensor is accurate & redundant – [Link]