MAX9924UAUB+ Specifications
Manufacturer: Maxim Integrated
Part Number: MAX9924UAUB+
Product Type: Sensor Interface IC
Interface Type: Variable Reluctance Sensor Interface
Number of Channels: Dual
Supply Voltage Range: 4.5 V to 5.5 V
Input Type: Differential VR Sensor Input
Output Type: Digital Output
Package Type: µMAX-10
Mounting Type: Surface Mount
Operating Temperature Range: -40°C to +125°C
Input Protection: Adaptive Peak Threshold Detection
Applications Class: Automotive Sensor Interface
Packaging: Factory
Key Features
The MAX9924UAUB+ is a dual variable reluctance sensor interface designed for precision signal conditioning of magnetic pickup sensors. It converts low-level differential VR sensor signals into clean digital outputs suitable for microcontrollers and engine control systems. Additionally, the device uses adaptive peak threshold circuitry that adjusts automatically to varying input amplitudes. This capability allows reliable signal detection across a wide speed range. Because the IC integrates two independent sensor channels, designers can interface multiple rotational sensors using a compact device. As a result, the MAX9924 is widely used in automotive and industrial position sensing systems.
Applications
Automotive crankshaft position sensing
Camshaft speed detection systems
Engine timing control modules
Transmission rotational speed sensors
ABS wheel speed detection circuits
Industrial motor speed monitoring
Magnetic pickup sensor signal conditioning
Engine diagnostic and control electronics
Product Overview
The MAX9924UAUB+ from Maxim Integrated provides a complete signal interface solution for variable reluctance sensors. First, the device accepts differential input signals generated by magnetic pickup sensors commonly used in rotational speed detection systems. These sensors produce small analog signals that vary with shaft speed and magnetic field strength.
Furthermore, the IC includes adaptive peak threshold detection that automatically adjusts to changing signal levels. This feature allows accurate detection of sensor signals from low-speed cranking conditions to high-speed operation. Because the output is a clean digital signal, the device can connect directly to microcontrollers or engine control units.
The µMAX-10 surface mount package allows integration into compact automotive and industrial electronic modules. In addition, the device operates across an extended temperature range suitable for demanding environments. Therefore, the MAX9924UAUB+ is commonly used in engine management electronics, motor monitoring systems, and other sensor interface applications requiring reliable speed detection.
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