DESCRIPTION

The MA780 is a low-power angle sensor that

detects the absolute angular position of a

permanent magnet, such as a diametrically

magnetized cylinder on a rotating shaft. With its

power-cycling ability, the sensor is optimized for

applications that require low average power.

Timing can be controlled via an on-chip clock or

external controller. Flags are provided to detect

a definable amount of angle change.

The MA780 supports a wide range of magnetic

field strengths and spatial configurations. Both

end-of-shaft and off-axis (side-shaft mounting)

configurations are supported.

On-chip, non-volatile memory (NVM) provides

storage for configuration parameters, including

the reference zero-angle position, power cycling

parameters, and the filter window that affects the

output resolution.

The MA780 is available in a QFN-16 (3mmx3mm)

package.

FEATURES

 8-Bit to 12-Bit Resolution Absolute

Contactless Angle Encoder

 <0.5μA Current Consumption in Idle Mode

 10mA Current Consumption in Active Mode

 Angle Detection Interrupt to Wake System

 Supports On-Axis and Off-Axis Operation

 Serial Peripheral Interface (SPI)

 3.3V Supply

 -40°C to +125°C Operating Temperature

 Available in a QFN-16 (3mmx3mm)

Package

APPLICATIONS

 General-Purpose Angle Measurements

 Battery-Powered Devices

 Multi-Turn Encoders

 Low-Power Rotary Knob Interfaces