General Description

The AS5046 is a contactless magnetic angle encoder for accurate measurement up to 360°.

It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.

The AS5046 provides a digital serial 12-bit as well as a programmable 10-bit ratiometric analog output that is directly proportional to the angle of a magnet, rotating over the chip.

In addition, the serial interface enables a user configurable arrangement of the Hall array and allows access to each individual Sensor of the Hall Array.

Key Features

• 360° contactless high resolution angular position encoding

• User programmable zero position

• 12-bit 2-wire serial interface

• Versatile analog output

programmable angular range up to 360°

programmable ratiometric output voltage range

• High resolution magnet distance indication

256 steps within recommended range (~0.5 to 1.8mm)

256 steps over extended range (~0 to 5mm)

• Mode input for optimizing noise vs. speed

• Alignment mode for magnet placement guidance

• Wide temperature range: - 40°C to + 125°C

• Small package: SSOP 16 (5.3mm x 6.2mm)

Benefits

• Complete system-on-chip

• High reliability due to non-contact sensing

• Bi-directional 2-wire interface

• Programmable ratiometric analog output

• Ideal for application s in harsh environments

• Robust system, tolerant to magnet misalignment, airgap variations, temperature variations and external magnetic fields

• No calibration required

Applications

The AS5046 is ideal for applications that require high resolution, a minimum of wires between controller and sensor and where the vertical distance of the magnet is of importance:

• Remote sensors

• Rotate-and-push manual input devices

• Joysticks

• Applications with extended safety requirements regarding magnet distance