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.