MAX9926UAEE+T

MAX9926UAEE+T is a variable reluctance (VR or magnetic coil) sensor interface device that is ideal for position and speed sensing for automotive crankshafts, camshafts, transmission shafts, etc. 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 also provides a direction output that is useful for quadrature-connected VR sensors that are used in certain high performance engines. Applications include camshaft VRS interfaces, crankshaft VRS interfaces, and vehicle speed VRS interfaces.

• Differential input stage provides enhanced noise immunity
• Precision amplifier and comparator allows small-signal detection
• User-enabled internal adaptive peak threshold or flexible external threshold
• Zero-crossing detection provides accurate phase information
• Operating supply range from 4.5 to 5.5V
• Supply current is 4.7mA typ at VCC=5V, VGND=0V, gain setting=1V/V, mode A1, TA=TMIN to TMAX
• Differential amplifier common-mode rejection ratio is 78dB typ at VCC=5V, VGND=0V, TA=TMIN to TMAX
• Input resistance is 100Kohm typ at VCC=5V, VGND=0V, TA=TMIN to TMAX
• 16 QSOP package
• Operating temperature range from -40°C to +125°C

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