I need to design a device that interfaces to the speed sensor of heavy
trucks. These are variable reluctance sensors and will remain connected
to the vehicle's ECU, my circuit will piggyback. These are two-wire,
differential signals full of common-mode noise and vary in amplitude
greatly with frequency and also position as the tailshaft bearing wears
in the vehicle.

Right now I am designing the front end and would love to use something
like the MAX9924 since it makes things simple. But it's a Maxim part
which I am still hesitant to spec.

Parts like the LM1815, LM2907, NCV1124 are all single-ended input. The
NCV7001 is end-of-life.

Any pointers toward a differential VR sensor interface IC?

This is a smallish volume product, so I don't expect to be able to get
any high-volume ABS interface parts. Which at this point are probably so
highly integrated with other functions as to be unusable to repurpose
for my use anyway.

Thanks,

Bob

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