US1881LSE-AAA-000-RE
Overview
The US1881LSE-AAA-000-RE is a bipolar Hall-effect latch designed using CMOS technology with a chopper-stabilized amplifier stage to minimize offset drift. Operating from a wide 3.5V to 24V supply range, this sensor provides a digital open-drain output that toggles state in response to alternating magnetic South and North poles. Its automotive-grade temperature rating of -40 to 150 degrees Celsius makes it suitable for demanding thermal environments.
Why Choose This Part
The mixed-signal architecture incorporates dynamic offset cancellation and an internal Schmitt trigger to ensure clean, jitter-free switching. Its open-drain output simplifies interfacing with various logic levels up to 24V, while the chopper-stabilized design maintains high sensitivity and stability across its full 150-degree Celsius operating range.
Applications
Key Specifications
Getting Started
To integrate this sensor, connect a pull-up resistor (typically 1k to 10k ohms) between the open-drain output pin and the logic supply voltage. Ensure a bypass capacitor of at least 100nF is placed close to the VDD pin to filter supply noise, especially in high-speed motor applications. Test the latching behavior using a multi-pole ring magnet to verify the 9.5mT trip and -9.5mT release thresholds.
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