Revision 1.1, 3-Jun-08 www.austriamicrosystems.com
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1
General Description
The AS5046 is a contactless angular measurement system-on-chip, combining
integrated Hall elements, analog front end and digital signal processing in a
single device.
It computes the mechanical angle of a simple 2 pole diametrically magnetized
magnet that is placed either above or below the device.
The AS5046 has a resolution of 12bits, providing 4096 absolute positions.
Furthermore, an analog output proportional to the angle is available.
The AS5046 can be configured to specific customer requirements by
programming a one time programmable (OTP) register. An internal voltage
regulator allows the AS5046 to operate from either 3.3 V or 5 V supplies.
Figure 1:
Typical arrangement AS5046 and magnet
1.1
The AS5046 Demoboard
The AS5046 demoboard is a complete rotary encoder system with built-in microcontroller, USB interface, 4-digit 7-segment
display and magnitude output LED. The board is USB powered or externally supplied for standalone operation. Dimensions:
72mm x 54mm (2.82 x 2.13 inch).
1.1.1
Programming
The demoboard also supports external circuits using the AS5046, such as the AS5046 adapter PCB (as shown below) or
any other AS5046 customer application. These are connected to the demoboard and can be displayed, modified or
permanently programmed using the AS5046 Demo Software.
External
supply and
programming
voltage
USB
connector
Reference
voltage,
feedback
and
analog output
AS5046
Connector for
external AS5046
Knob with
magnet
7-segment display for
standalone operation
AS5046
PROGRAMMABLE MAGNETIC ROTARY ENCODER
DEMOBOARD AND SOFTWARE
OPERATION MANUAL
