AS5048 Adapter Board
Table of Contents
1
1.1
2
2.1
3
4
4.1
4.2
4.3
5
6
6.1
6.2
7
8
Introduction .......................................................................................................................... 3
Kit Content ........................................................................................................................... 3
Board Description................................................................................................................. 4
Mounting the AS5048 adapter board ................................................................................... 5
AS5048 adapter board and pinout ....................................................................................... 6
Operation cases ................................................................................................................... 7
One Device SPI mode, unidirectional – 3 wire .................................................................... 7
One device SPI mode, bidirectional – 4 wire ....................................................................... 8
Multi devices SPI Daisy chain mode .................................................................................... 9
Software example source code .......................................................................................... 10
AS5048-EK-AB Hardware .................................................................................................. 12
AS5048-EK-AB schematics ............................................................................................... 12
AS5048-EK-AB PCB layout ............................................................................................... 13
Ordering & Contact Information ......................................................................................... 14
Copyrights & Disclaimer ..................................................................................................... 15
Revision History
Revision
1.0
1.1
1.2
1.3
Date
01.10.2009
18.10.2013
14.01.2013
01.07.2014
azen
rph
mzie
Owner
Description
Initial version
Updated to new template
Minor corrections in section 4.1
Updated ordering code, added section 1.1,
updated figure 2-9, updated source code
ams Eval Kit Manual, Confidential
[v1-3] 2014-Aug-01
Page 2
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AS5048 Adapter Board
1
Introduction
The AS5048 adapter board is a small PCB allowing simple and quick testing or evaluation of the
AS5048 magnetic position sensor without the need to build a test fixture or design an own PCB.
1.1
Kit Content
Figure 1: Kit Content
1
2
Pos.
1
2
Item
AS5048 adapter board
Magnet AS5000-MD6H-2
Comment
P1 unpopulated
Diametric Magnet, D6x2.5mm, NdFeB, Bomatec AG
ams Eval Kit Manual, Confidential
[v1-3] 2014-Aug-01
Page 3
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AS5048 Adapter Board
2
Board Description
The PCB can either be connected to an external microcontroller or to the Universal Connector
Board (AS5xxx-UCB) in combination with a NI USB-8451 box and a provided LabVIEW software.
P1 has to be populated with a 1x8 pin header and is required for power supply as well as SPI/I2C
and PWM interfaces.
The PCB is available in two versions. Either populated with an AS5048A with SPI or AS5048B with
I2C interface.
Figure 2: AS5048 adapter board
P1 connector
(Not populated)
4x2.6mm
Mounting holes
AS5048
ams Eval Kit Manual, Confidential
[v1-3] 2014-Aug-01
Page 4
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AS5048 Adapter Board
2.1
Mounting the AS5048 adapter board
Figure 3: Mounting and dimensions
0.5-3mm
AS5048
22mm
SDA/CSn
PWM
A1/MOSI
A2/MISO
SCL/SCK
GND
3.3V
5V
4x2.6mm
28mm
AS5048
A 6x2.5mm diametric magnet must be placed over or under the AS5048 sensor, and should be
centered on the middle of the package with a tolerance of 0.5mm. The airgap between the
magnet surface and the package should be maintained in the range 0.5mm to 3mm. The magnet
holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless steel are the
best choices to make this part.
ams Eval Kit Manual, Confidential
[v1-3] 2014-Aug-01
11mm
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