Ratiometric unipolar linear hall effect sensor with analog output

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 0.6V 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.

Multiple sensitivity options further maximize the output swing based on the required

sensing range.

The device

operates from 3.3V or

5V 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 the reference. Additionally, the

device features magnet temperature compensation to counteract how magnets drift for

linear performance across a

wide –40°C to +125°C temperature range.

Device options for no temperature compensation

of magnet drift are also available.