The AMS AS5247 is a compact magnetic rotary position sensor IC capable of sensing the absolute angular position of a magnet over a full 360° range with a programmable zero position. It features high resolution at up to 14 bits of angular position data with a programmable resolution down to 10 bits. The device can be used in a variety of applications such as motor commutation, contactless potentiometers, rotary encoders, level sensing and angle measurement.
The AMS AS5247 is a compact magnetic rotary position sensor IC capable of sensing the absolute angular position of a magnet over a full 360° range with a programmable zero position. It features high resolution at up to 14 bits of angular position data with a programmable resolution down to 10 bits. The device can be used in a variety of applications such as motor commutation, contactless potentiometers, rotary encoders, level sensing and angle measurement.
AS5247 Adapter Board
ams Eval Kit Manual
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[v1-2] 2019-Mar-08
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Content Guide
1 Introduction .......................................................................................................................... 3
1.1 Kit Content ........................................................................................................................... 3
2 Board description ................................................................................................................. 4
2.1 Mounting the AS5247 adapter board ................................................................................... 5
3 AS5247 adapter board and pinout ....................................................................................... 6
4 Operation case ..................................................................................................................... 8
4.1 One device SPI mode, unidirectional – 3 wire ..................................................................... 8
4.2 One device SPI mode, bidirectional – 4 wire ....................................................................... 9
5 AS5247-MF_EK_AB Hardware .......................................................................................... 10
5.1 AS5247-MF_EK_AB schematics ....................................................................................... 10
5.2 AS5247-MF_EK_AB PCB layout ....................................................................................... 11
6 Ordering & Contact Information ......................................................................................... 12
7 Copyrights & Disclaimer ..................................................................................................... 13
8 Revision Information .......................................................................................................... 14
AS5247 Adapter Board
ams Eval Kit Manual
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[v1-2] 2019-Mar-08
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1 Introduction
The AS5247 adapter board is a small PCB allowing simple and quick testing or evaluation of the
AS5247 magnetic position sensor without the need to build a test fixture or design an own PCB.
1.1 Kit Content
Figure 1: Kit content
Pos.
Item
Comment
1
AS5247-MF_EK_AB
Adapter board
2
AS5000-MD8H-1
Diametric Magnet, D8x2.5mm, NdFeB, Bomatec AG
1
2
AS5247 Adapter Board
ams Eval Kit Manual
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2 Board description
The PCB can either be connected to an external microcontroller, or to the I&P USB Box using the 5-
pin dual row connector P1.
P1 is already populated and gives access for power supply as well as SPI interface.
P2 has to be populated with a 2x8 pin header and can be used for ABI and UVW interfaces.
Figure 2: AS5247 adapter board
P1 connector
AS5247
4x3mm
Mounting holes
P2 connector
(not populated)
AS5247 Adapter Board
ams Eval Kit Manual
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[v1-2] 2019-Mar-08
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2.1 Mounting the AS5247 adapter board
Figure 3: Mounting and dimensions
A 8 x 2.5 mm diametric magneticed magnet must be placed over or under the AS5247 sensor,
and should be centered on the middle of the package with a tolerance of 0.5 mm. The airgap
between the magnet surface and the package should be maintained in the range 0.5 mm to 3
mm.
Recommendet nominal airgap for the 8 mm magnet = 2 mm.
Recommendet nominal airgap for the 6 mm magnet = 1.5 mm.
The magnet holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless
steel are the best choices to make this part.
AS5247 Adapter Board
ams Eval Kit Manual
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3 AS5247 adapter board and pinout
Figure 4: AS5247 adapter board and sensor pinout
Pin#
Board
Pin#
AS5247
Symbol
board
Type
Description
P1 - 1
4, 5
MISO
Digital output
SPI MISO
P1 - 2
29, 30
GND
Power supply
Ground
P1 - 3
6, 7
MOSI
Digital input
SPI MOSI
P1 - 4
40
CS_B
Digital input
SPI chip select (active low) bottom die
P1 - 5
2, 3
CLK
Digital input
SPI Clock
P1 - 6
NC
Not connected
P1 - 7
1
CS_T
Digital input
SPI chip select (active low) top die
P1 - 8
NC
Not connected
P1 - 9
25, 26
5V
Power supply
Positive supply voltage
P1 - 10
NC
Not connected
P2 – 1
29, 30
GND
Power supply
Ground
P2 - 2
29, 30
GND
Power supply
Ground
AS5235
1
2
3
4
5
6
7
8
30
29
28
27
26
25
24
23
40
39
38
37
36
35
34
33
11
12
13
14
15
16
17
18
9
10
32
31
22
21
19
20
AS5247
EP
CSn_T
CLK_B
CLK_T
MISO_B
MISO_T
MOSI_B
MOSI_T
Test_B
Test_T
B_B
B_T
A_B
A_T
nc
nc
nc
nc
nc
W_B/PWM_B
W_T/PWM_T
GND_T
GND_B
VDD3V3_T
VDD3V3_B
VDD_T
VDD_B
U_T
U_B
V_T
V_B
AS5247 Adapter Board
ams Eval Kit Manual
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Pin#
Board
Pin#
AS5247
Symbol
board
Type
Description
P2 - 3
24
U_T
Digital output
Commutation signal U of top die
P2 - 4
23
U_B
Digital output
Commutation signal U of bottom die
P2 - 5
22
V_T
Digital output
Commutation signal V of top die
P2 - 6
21
V_B
Digital output
Commutation signal V of bottom die
P2 - 7
20
W_T
Digital output
Commutation signal W or PWM of top die
P2 - 8
19
W_B
Digital output
Commutation signal W or PWM of bottom die
P2 - 9
13
A_T
Digital output
Incremental signal A (quadrature) of top die
P2 - 10
12
A_B
Digital output
Incremental signal A (quadrature) of bottom die
P2 – 11
11
B_T
Digital output
Incremental signal B (quadrature) of top die
P2 – 12
10
B_B
Digital output
Incremental signal B (quadrature) of bottom die
P2 – 13
32
I_T
Digital output
Incremental signal I (index) or PWM of top die
P2 – 14
31
I_B
Digital output
Incremental signal I (index) or PWM of bottom die
P2 – 15
29, 30
GND
Power supply
Ground
P2 - 16
29, 30
GND
Power supply
Ground
AS5247 Adapter Board
ams Eval Kit Manual
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4 Operation case
4.1 One device SPI mode, unidirectional – 3 wire
The AS5247 adapter board can be directly connected to an industry standard SPI port of a
microcontroller. The minimum connection requirements for unidirectional communication between
the microcontroller and the AS5247 are MISO, CLK, CSn. In this case the MOSI pin is tied to VDD
wich will result in reading only the 14-bit Angle Register (0x3FFF). See AS5247 datasheet register
table, register 0x3FFF.
Figure 5: One device SPI mode, unidirectional – 3 wire
AS5247 Adapter Board
ams Eval Kit Manual
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4.2 One device SPI mode, bidirectional – 4 wire
If it’s needed to read other registers than the Angle Register (0x3FFF) or to write to registers of the
AS5247 the MOSI connection is required.
Figure 6: One device SPI mode, bidirectional – 4 wire
AS5247 Adapter Board
ams Eval Kit Manual
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5 AS5247-MF_EK_AB Hardware
5.1 AS5247-MF_EK_AB schematics
Figure 7: AS5247-MF_EK_AB schematics
1
1
2
2
3
3
4
4
D D
C C
B B
A A
A4
Size
Date
Project Title
Revision
Sheet ofOriginator mzie, mp3
AS5247-MF_EK_AB
1.1
08.03.2019
*
1
1 2
3 4
5 6
7 8
9 10
P1
Header 5X2
5V
CS_B
CLK
MOSI
MISO
CS_T
GND
CS_B
CS_T
CLK
CLK
MISO
MISO
MOSI
MOSI
C2
1uF
C1
1uF
C4
100nF
C3
100nF
5V
5V
VDD3V3_2
VDD3V3_1
GND
GND
GND
GND
GND
GND
VDD3V3_2
VDD3V3_1
5V
5V
A_B
B_B
I_B / PWM_B
U_B
V_B
W_B / PWM_B
A_T
B_T
I_T / PWM_T
U_T
V_T
W_T / PWM_T
U_T
U_B
V_T
V_B
W_T / PWM_T
W_B / PWM_B
B_T
B_B
A_T
A_B
I_B / PWM_B
I_T / PWM_T
12
34
56
78
910
1112
1314
1516
P2
Header 8X2
GND
GND
GND
GND
CSn_T
1
CLK_B
2
CLK_T
3
MISO_B
4
MISO_T
5
MOSI_B
6
MOSI_T
7
GND_T
30
GND_B
29
VEE3V3_T
28
VDD3V3_B
27
VDD_T
26
VDD_B
25
U_T
24
Test_B
8
Test_T
9
B_B
10
U_B
23
V_T
22
V_B
21
W_T/PWM_T
20
W_B/PWM_B
19
A_T
13
A_B
12
B_T
11
CSn_B
40
I_B/PWM_B
31
AS5247
I_T/PWM_T
32
U1
AS5247
AS5247 Adapter Board
ams Eval Kit Manual
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[v1-2] 2019-Mar-08
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6 Ordering & Contact Information
Ordering Code
Description
AS5247-MF_EK_AB
AS5247 Eval Kit Adapter Board
Buy our products or get free samples online at:
www.ams.com/Products
Technical Support is available at:
www.ams.com/Technical-Support
Provide feedback about this document at:
www.ams.com/Document-Feedback
For further information and requests, e-mail us at:
ams_sales@ams.com
For sales offices, distributors and representatives, please visit:
www.ams.com/contact
Headquarters
ams AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
AS5247 Adapter Board
ams Eval Kit Manual
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7 Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks
Registered. All rights reserved. The material herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner.
Demo Kits, Evaluation Kits and Reference Designs are provided to recipient on an “as is” basis for
demonstration and evaluation purposes only and are not considered to be finished end-products
intended and fit for general consumer use, commercial applications and applications with special
requirements such as but not limited to medical equipment or automotive applications. Demo Kits,
Evaluation Kits and Reference Designs have not been tested for compliance with electromagnetic
compatibility (EMC) standards and directives, unless otherwise specified. Demo Kits, Evaluation Kits
and Reference Designs shall be used by qualified personnel only.
ams AG reserves the right to change functionality and price of Demo Kits, Evaluation Kits and
Reference Designs at any time and without notice.
Any express or implied warranties, including, but not limited to the implied warranties of
merchantability and fitness for a particular purpose are disclaimed. Any claims and demands and any
direct, indirect, incidental, special, exemplary or consequential damages arising from the inadequacy
of the provided Demo Kits, Evaluation Kits and Reference Designs or incurred losses of any kind (e.g.
loss of use, data or profits or business interruption however caused) as a consequence of their use
are excluded.
ams AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or consequential damages, of any kind, in connection with or arising out of the
furnishing, performance or use of the technical data herein. No obligation or liability to recipient or
any third party shall arise or flow out of ams AG rendering of technical or other services.
AS5247 Adapter Board
ams Eval Kit Manual
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[v1-2] 2019-Mar-08
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8 Revision Information
Changes from previous version to current revision 1-2 (2019-Mar-08)
Page
Initial version 1-00
V 1-10, Mechanical dimension changed
5
V 1-10, AS5247 Pinout changed
6
V 1-12, new mechanical dimensions and P1 pinout updated
Note: Page numbers for the previous version may differ from page numbers in the current revision.
Correction of typographical errors is not explicitly mentioned.
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AMS AS5247 User guide
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- User guide
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The AMS AS5247 is a compact magnetic rotary position sensor IC capable of sensing the absolute angular position of a magnet over a full 360° range with a programmable zero position. It features high resolution at up to 14 bits of angular position data with a programmable resolution down to 10 bits. The device can be used in a variety of applications such as motor commutation, contactless potentiometers, rotary encoders, level sensing and angle measurement.
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