MAX9924UAUB+T

Sensor And Detector Interfaces Overview

The MAX9924UAUB+T is a variable reluctance sensor interface device designed for position and speed sensing in automotive applications. It integrates a precision differential amplifier with a fixed gain of 1V/V, a comparator, and adaptive peak threshold circuitry. The device operates on a supply voltage ranging from 4.5V to 5.5V with a typical operating current of 2.6mA. It features a 10-pin uMAX package and supports an extended temperature range from -40°C to +125°C. Key electrical parameters include a power-on time of 30µs to 150µs, input offset voltage of 0.5mV to 3mV, and common-mode rejection ratio of 60dB to 87dB.

Sensor And Detector Interfaces Feature Summary

• Differential input stage provides enhanced noise immunity for reliable signal detection
• Adaptive peak threshold adjusts dynamically to prevent false triggers from weak signals or system noise
• Zero-crossing detection capability ensures accurate phase information for engine control timing

Sensor And Detector Interfaces Applications

• Camshaft variable reluctance sensor interfaces
• Crankshaft variable reluctance sensor interfaces
• Vehicle speed variable reluctance sensor interfaces

Sensor And Detector Interfaces Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Confirm the package type matches the 10-pin uMAX configuration. Ensure the suffix indicates lead-free and RoHS compliance as specified. Cross-reference the part number with authorized distributor catalogs to confirm availability status before procurement.

Sensor And Detector Interfaces Selection Notes

Select this component when interfacing with legacy single-ended or new-generation differential variable reluctance sensors. The fixed internal gain simplifies design compared to external resistor configurations. Consider the MAX9925 if adjustable gain is required, or the MAX9926 if dual-channel operation and rotational direction output are necessary for quadrature sensors.

Sensor And Detector Interfaces Part Context

This device belongs to the MAX9924–MAX9927 family of variable reluctance sensor interfaces. While the MAX9924 offers a fixed-gain differential amplifier, the MAX9925 provides an operational amplifier with external gain setting. The MAX9926 and MAX9927 are dual-channel versions of these respective devices, offering additional functionality for complex engine management systems.

Sensor And Detector Interfaces Replacement Considerations

The MAX9924UAUB/V+T is a qualified automotive version of this component within the same series.