AS5045TR AMSCO [austriamicrosystems AG], AS5045TR Datasheet

AS5045TR

Manufacturer Part Number

AS5045TR

Description

12 BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER

Manufacturer

AMSCO [austriamicrosystems AG]

Datasheet

1.AS5045TR.pdf (24 pages)

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The AS5045 is a contactless magnetic rotary encoder for

accurate angular measurement over a full turn of 360°.

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 may be placed above or below the IC.

The absolute angle measurement provides instant

indication of the magnet’s angular position with a

resolution of 0.0879° = 4096 positions per revolution.

This digital data is available as a serial bit stream and as

a PWM signal.

An internal voltage regulator allows the AS5045 to

operate at either 3.3 V or 5 V supplies

1.1

Revision 1.5

AS5045

12 BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER

Complete system-on-chip

Flexible system solution provides absolute and PWM

outputs simultaneously

Ideal for applications in harsh environments due to

contactless position sensing

No calibration required

General Description

Figure 1: Typical arrangement of AS5045 and magnet

Benefits

www.austriamicrosystems.com

1.2

1.3

Industrial applications:

Automotive applications:

Replacement of high end potentiometers

Contactless high resolution rotational position

encoding over a full turn of 360 degrees

Two digital 12bit absolute outputs:

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 AS5045

devices using Daisy Chain mode

Tolerant to magnet misalignment and airgap

variations

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

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

- Contactless rotary position sensing

- Robotics

- Steering wheel position sensing

- Transmission gearbox encoder

- Headlight position control

- Torque sensing

- Valve position sensing

Key Features

- Serial interface and

- Pulse width modulated (PWM) output

Applications

DATA SHEET

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