Ratiometric unipolar linear hall effect sensor with analog output


Product details


Type Ratiometric unipolar Supply voltage (Vcc) (Min) (V) 3 Supply voltage (Vcc) (Max) (V) 5.5 Accuracy (%) 5 Rating Catalog Output 0.6 V to Vcc Sensitivity (Typ) (mV/mT) 25, 50, 100, 200 Operating temperature range (C) -40 to 125 open-in-new Find other Linear Hall-effect sensors

Package | Pins | Size

SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 TO-92 (LPG) 3 6 mm² 4 x 1.52 open-in-new Find other Linear Hall-effect sensors


  • Unipolar linear hall effect magnetic sensor
  • Operates from 3.3-V and 5-V power supplies
  • Analog output with 0.6-V quiescent offset:
    • Maximizes voltage swing for high accuracy
  • Magnetic sensitivity options (at VCC = 5 V):
    • A1/Z1: 200 mV/mT, 20-mT range
    • A2/Z2: 100 mV/mT, 39-mT range
    • A3/Z3: 50 mV/mT, 79-mT range
    • A4/Z4: 25 mV/mT, 158-mT range
    • A6: 100 mV/mT, 39-mT range
  • Fast 20-kHz sensing bandwidth
  • Low-noise output with ±1-mA drive
  • Compensation for magnet temperature drift for A1/A2/A3/A4/A6 versions and None for the Z1/Z2/Z3/Z4 versions
  • Standard industry packages:
    • Surface-mount SOT-23
    • Through-hole TO-92
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The DRV5056 is a linear Hall effect sensor that responds proportionally to flux density of a magnetic south pole. The device can be used for accurate position sensing in a wide range of applications.

Featuring a unipolar magnetic response, the analog output drives 0.6 V when no magnetic field is present, and increases when a south magnetic pole is applied. This response maximizes the output dynamic range in applications that sense one magnetic pole. Four sensitivity options further maximize the output swing based on the required sensing range.

The device operates from 3.3-V or 5-V power supplies. 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 minimize error from VCC tolerance when the external analog-to-digital converter (ADC) uses the same VCC for its reference. Additionally, the device features magnet temperature compensation to counteract how magnets drift for linear performance across a wide temperature range. Device options for no temperature compensation of magnet drift are also available.

The A1 to A4 options support a temperature range of –40°C to +125°C. The A6 version supports a temperature range of 0°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet DRV5056 Unipolar Ratiometric Linear Hall Effect Sensor datasheet (Rev. B) Jun. 03, 2020
Application note Head-on Linear Displacement Sensing Using Hall-Effect Sensors Jun. 28, 2021
Technical article What is a Hall-effect sensor? May 17, 2021
User guide HALL-ADAPTER-EVM User's Guide (Rev. A) Apr. 20, 2020
User guide DRV5055-5057EVM User's Guide Jan. 25, 2019
Technical article Intro to linear Hall effect sensors: Achieve contactless accurate position sensing Sep. 06, 2018
Application note Linear Hall Effect Sensor Angle Measurement Theory, Implementation (Rev. A) Aug. 23, 2018
Application note Overview Using Linear Hall Effect Sensors to Measure (Rev. A) Aug. 22, 2018

Design & development

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Hardware development

document-generic User guide
TheDRV505x is a linear Hall Effect magnetic-sense solution that provides ease of use and high performance. The DRV5055-5057EVM is intended to provide basic functional evaluation of this device family. The fixture layout is not intended to be a model for the target circuit, nor is it laid out for (...)
  • Evaluation of all gain options for the DRV5055, DRV5056, and DRV5057
  • Ease of access to device pins with test points
  • Capability to easily read Voltage, mT, and microcontroller ADC memory values from and LCD
  • Ability to toggle between devices through the simple press of pushbutton (S1)
document-generic User guide
Speed up your switch, latch and linear Hall sensor prototyping and testing with the HALL-ADAPTER-EVM, which provides a fast, easy and inexpensive way to interface with small ICs. You can connect any supported Hall sensor using the included Samtec terminal strips or wire them directly to existing (...)
  • Evaluation of most Hall sensor devices from TI, including SOT-23, TO-92, X2SON, and more.
  • Standard breakout footprint for easy breadboard prototyping.
  • Magnet included.

Design tools & simulation

SBAC231.ZIP (1110 KB)

CAD/CAE symbols

Package Pins Download
SOT-23 (DBZ) 3 View options
TO-92 (LPG) 3 View options

Ordering & quality

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