Manufacturer Part Number
A1121ELHLT-T
Manufacturer
Allegro MicroSystems
Introduction
The A1121ELHLT-T is a Hall-effect-based magnetic sensor IC that functions as a unipolar switch.
Product Features and Performance
Operates on a supply voltage of 3V to 24V
Wide operating temperature range of -40°C to 85°C
Sensing range of 13.5mT trip and 4mT release
Open-drain output with a maximum current of 25mA
Low supply current of up to 4mA
Product Advantages
Robust and reliable Hall-effect technology
Compact surface-mount package (SOT-23W)
Automotive-grade quality and AEC-Q100 qualification
Suitable for a variety of applications, including automotive and industrial
Key Technical Parameters
Voltage Supply: 3V to 24V
Operating Temperature: -40°C to 85°C
Sensing Range: 13.5mT trip, 4mT release
Output Type: Open Drain
Current Supply (Max): 4mA
Current Output (Max): 25mA
Polarization: South Pole
Technology: Hall Effect
Mounting Type: Surface Mount
Quality and Safety Features
RoHS3 compliant
AEC-Q100 qualified for automotive applications
Compatibility
The A1121ELHLT-T is a direct replacement for the A1121 series of Hall-effect-based magnetic sensors.
Application Areas
Automotive systems (e.g., position sensing, speed detection)
Industrial automation and control
White goods and home appliances
General purpose magnetic sensing applications
Product Lifecycle
The A1121ELHLT-T is a current and widely available product from Allegro MicroSystems. There are no immediate plans for discontinuation, and the product has several compatible replacement options available.
Key Reasons to Choose This Product
Robust and reliable Hall-effect technology for precise and stable magnetic sensing
Wide operating voltage and temperature range, suitable for a variety of applications
Compact surface-mount package for space-constrained designs
Automotive-grade quality and AEC-Q100 qualification for demanding environments
Low power consumption and high output current capability for efficient system integration
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