DRV5055-Q1

• Ratiometric Linear Hall Effect Magnetic Sensor
• Operates From 3.3-V and 5-V Power Supplies
• Analog Output With V_CC / 2 Quiescent Offset
• Magnetic Sensitivity Options (At V_CC = 5 V):
  • A1: 100 mV/mT, ±21-mT Range
  • A2: 50 mV/mT, ±42-mT Range
  • A3: 25 mV/mT, ±85-mT Range
  • A4: 12.5 mV/mT, ±169-mT Range
  • A5: –100 mV/mT, ±21-mT Range
• Fast 20-kHz Sensing Bandwidth
• Low-Noise Output With ±1-mA Drive
• Compensation For Magnet Temperature Drift
• AEC-Q100 Qualified for Automotive Applications:
  • Temperature Grade 0: –40°C to 150°C
• Standard Industry Packages:
  • Surface-Mount SOT-23
  • Through-Hole TO-92

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The DRV5055-Q1 is a linear Hall effect sensor that responds proportionally to magnetic flux density. The device can be used for accurate position sensing in a wide range of applications.

The device operates from 3.3-V or 5-V power supplies. When no magnetic field is present, the analog output drives half of V_CC. The output changes linearly with the applied magnetic flux density, and five sensitivity options enable maximal output voltage swing based on the required sensing range. North and south magnetic poles produce unique voltages.

Magnetic flux perpendicular to the top of the package is sensed, and the two package options provide different sensing directions.

The device uses a ratiometric architecture that can eliminate error from V_CC tolerance when the external analog-to-digital converter (ADC) uses the same V_CC for its reference. Additionally, the device features magnet temperature compensation to counteract how magnets drift for linear performance across a wide –40°C to +150°C temperature range.