ams AG AS5132 Panduan Pengoperasian - Halaman 2
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Halaman CetakAS5132
8 BIT PROGRAMMABLE HIGH SPEED
MAGNETIC ROTARY ENCODER
1 General Overview
The AS5132 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of
360º. 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 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 a serial bit stream and as a
PWM signal.
An additional U,V,W output can be used for a block commutation for a brushless DC motor. An incremental signal is
available as an option.
In addition to the angle information, the strength if 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 the AS5132 has the option to use a static or dynamic pre-
commutation.
2 The AS5132 Demoboard
The AS5132 demoboard is a complete rotary encoder system with built-in microcontroller, USB interface, graphical LCD
display, incremental indicators, commutation indicators and PWM output LED.
The board is USB powered or externally supplied with a 9V battery for standalone operation. For this Demoboard the
AS5132 is configured with UVW Output.
Knob with D5x2.5mm
diametral magnet,
2mm over the AS5134
UVW commutation LEDs
*Switch INT - EXT
Revision 1.1, 07.October 2009
LCD display (for standalone mode)
AS5134 output signals connector and indicators
Figure 1: AS5132 Demoboard hardware with mounted magnet knob
www.austriamicrosystems.com
AS5132-DB-1.0 Demoboard
OPERATION MANUAL
9V battery connector
(standalone only)
SiLabs C8051C320
microcontroller
USB cable to the PC
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