austriamicrosystems AS5132 Betriebshandbuch

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AS5040 8-bit Programmable Magnetic Rotary Encoder

AS5132

Programmable Magnetic Rotary Encoder

General Description

The AS5132 is a contactless magnetic rotary encoder for accurate

angular measurement over a full turn of 360 degrees. It is a

systemon-

chip, combining integrated Hall elements, analog frontend 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 absolute angle measurement provides instant indication of the

magnet's angular position with a resolution of 8.5 bit = 360 positions

per revolution. This digital data is available as serial output over the

interface and as a pulse width modulated (PWM) signal.

An additional U,V,W output can be used for a block commutation for

2 The AS5132 Adapter board

2.1

Board description

The AS5132 adapter board is a simple circuit allowing test and evaluation of the AS5132 rotary encoder quickly without building a

test fixture or PCB. The PCB requires 5V power supply and GND connection. To program the device or read out the absolute

position of the magnet via SSI a software is mandatory. COM/INC PIN is needed to select UVW Output or ABIndex. To use the

static or dynamic pre-commutation a programming on the device is mandatory.

UVW or ABIndex

connection

COM/INC PIN to

select UVW or ABI

Revision 1, April 2012

a brushless DC motor. An incremental signal is available as an

option.

In addition to the angle information, the strength of the magnetic

field

is also available as a 5-bit code.

A software programmable (OTP) zero position simplifies assembly

as the zero position. The magnet does not need to be mechanically

aligned.

To optimize the torque characteristic at a certain speed

theAS5132 has the option to use a static or dynamic pre-

commutation

Figure 1: AS5132 Adapterboard

www.austriamicrosystems.com

AS5132-AB-v1.0

Adapterboard

OPERATION MANUAL

AS5132

encoder

4 x 2.6mm

mounting holes

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