The MAX9926UAEE+ is a variable reluctance sensor interface with differential input and adaptive peak threshold in 16 pin QSOP package. The variable reluctance (VR or magnetic coil) sensor interface device is ideal for position and speed sensing for automotive crankshafts, camshafts and transmission shafts. This device integrates a precision amplifier and comparator with selectable adaptive peak threshold and zero crossing circuit blocks that generate robust output pulses even in the presence of substantial system noise or extremely weak VR signals. The MAX9926 combine matched resistors with a CMOS input precision operational amplifier to give high CMRR over a wide range of input frequencies and temperatures. The MAX9926 differential amplifier provides a fixed gain of 1V/V. It also provides a direction output that is useful for quadrature connected VR sensors that are used in certain high performance engines.
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