General Description

The AS5045B is a contact less magnetic position sensor for accurate angular measurement over a full turn of 360 degrees. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip, is required. The magnet can be placed above or below the IC.

Key Features

Contact less high resolution rotary position sensor over a full turn of 360 degrees

Two digital 12-bit absolute outputs:

       - Serial interface

       - Pulse width modulated (PWM) output

Quadrature A/B/I output 12-bit

User programmable zero position

Failure detection mode for magnet placement, monitoring, and loss of power supply

Red-Yellow-Green indicators display placement of magnet in Z axis

Serial read-out of multiple interconnected AS5045B devices using Daisy Chain mode

Tolerant to magnet misalignment and gap variations

Wide temperature range: - 40ºC to +125ºC

Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)

Applications

The device is ideal for industrial applications like automatic or elevator doors, robotics, motor control and optical encoder replacement.