1 Features
1• 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

2 Applications
• Precise position sensing
• Industrial automation and robotics
• Home appliances
• Gamepads, pedals, keyboards, triggers
• Height leveling, tilt and weight measurement
• Fluid flow rate measurement
• Medical devices
• Current sensing

3 Description
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.