Multichannel magnetic field sensor with multiplexed signal path

A magnetic field sensor comprising:

• a plurality of magnetic field sensing elements, each configured to generate a respective magnetic field signal indicative of a sensed magnetic field;
• a front end amplifier coupled to receive a first magnetic field signal during a first time interval when a first one of the plurality of magnetic field sensing elements is coupled to the front end amplifier and to receive a second magnetic field signal during a second time interval when a second one of the plurality of magnetic field sensing elements is coupled to the front end amplifier, wherein the second time interval does not overlap with the first time interval, and wherein the front end amplifier is configured to generate an amplified signal;
• a first low pass filter configured to process the amplified signal during the first time interval and generate a first low pass filtered signal;
• a second low pass filter configured to process the amplified signal during the second time interval and generate a second low pass filtered signal;
• a sinc filter having a first input coupled to receive the first low pass filtered signal during the first time interval and a second input coupled to receive the second low pass filtered signal during the second time interval, wherein the sinc filter comprises an averaging element that is configured to generate an averaged signal based on the first and second low pass filtered signals;
• and
• a Schmitt trigger circuit comprising a comparator having a first input coupled to receive the averaged signal, a second input coupled to receive a reference signal, and an output at which a first comparator output signal is provided during the first time interval and a second comparator output signal is provided during the second time interval.