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.