AMS AS5306 User manual

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Revision 1.3 / 2012/09/24
User Manual –AS5304 / AS5306 Demo Kit
AS5304 / AS5306
160-step Linear Incremental Position
Sensor with ABI output

AS5304 / AS5306 - Demo Kit User Manual
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Revision 1.3 / 09/24/12
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Table of Contents
1. General Description............................................................................................................... 2
2. Package and Board Description ............................................................................................3
3. How to get the kit running......................................................................................................7
4. Design Considerations ..........................................................................................................8
5. Schematics and BOM ............................................................................................................9
6. Ordering Information............................................................................................................ 11
Copyright..................................................................................................................................... 12
Disclaimer ................................................................................................................................... 12

AS5304 / AS5306 - Demo Kit User Manual
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1. General Description
This document describes the features and operation of the AS5304/-06 Demo Kit.
The AS5304 and AS5306 are Hall-based linear incremental magnetic position sensors. They
are suitable for high resolution, contactless linear or off-axis rotary position sensing utilizing
multipole strip or ring magnets.
The AS5304 Demo-kit mounts a multi-pole strip magnet with 2mm pole length and has a
resolution of 25um per step, while the AS5306 uses a multi-pole strip magnet with 1.2mm pole
length and has a resolution of 15um per step. Both AS5304 and AS5306 have 160-step
measurement range.
These demo kits allow the user to evaluate the AS5304/AS5306 in stand-alone mode. This can
be accomplished using connectors on the backside of the board.
For linear motion sensing, a multi-pole strip magnet is required (Figure 1). For off-axis rotary
motion sensing a multi-pole ring magnet is used (Figure 2).
Figure 1:
Arrangement with multi-pole strip magnet
Figure 2:
Arrangement with multi-pole ring magnet

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2. Package and Board Description
Demo Kit Contents
The demo kit includes following items listed below in Table 1.
Table 1:
Demo Kit Contents
Pos
Item
Comment
1
AS5304/AS5306 demo board
Including mechanics
2
USB 2.0 cable
For demo board supply
3
Multipole Magnet Slider
4
Quick Start Guide
Board Description
Figure 3:
Demo board

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Figure 4:
Demo board front view
(A) Incremental steps
(B) Calculated position
(C) Pole Pair Indicator
(D) Magnetic Field Strength
Indicator LED
(E) Multipole Magnet Slider
(F) ABI indicator LED’s
(G) Zero position reset button
Additional Information about the Position Sensor
On the back side, there are several options to connect directly to the signals of the demo board
for further evaluation of the chip.
Figure 5:
Demo board back view
(A) USB connector
(B) Battery connector
(C) Position sensor connector
(see Table 2 and Figure 6
for details)
(D) Jumper to disconnect
onboard position sensor
(see Figure 7 for details)
(E) Zero position reset button
A
B
C
D
E
F
G
B
A
C
E
D
D
D
D

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Position Sensor Connector
The Position connector allows the user to monitor the ABI signals from the AS5304/AS5306 as
well as to connect this demoboard to an external sensor (see below, Connection of an external
Sensor) as shown in Figure 7.
Table 2:
Position sensor connector pin out
Pin
Pin Name
Description
1
GND
Ground Signal
2
A_ext
A output
3
B_ext
B output
4
I_ext
I output
5
5V
Position Sensor supply
6
AO
Analog Output
Figure 6:
Position sensor connector
If the on-board sensor is used for the measurements the Analog Output (AO) provides an analog
output voltage that represents the Automatic Gain Control of the position sensor signal control
loop. This output is used to monitor the magnetic field strength respectively the air gap between
sensor and multipole magnet strip. For more details refer to the position sensor datasheet.
1Connection of an external Sensor
Connection of an external Sensor
With the jumpers, the onboard position sensor can be disconnected to use an external position
sensor. Follow the instructions below to use an external position sensor.
(1) Disconnect the power supply of the demoboard by unplugging the USB cable.
(2) Disconnect the onboard position sensor by removing P1, P2, P3, and P4 jumpers. See
Figure 7.
(3) As the onboard position sensor is disconnected, connect an external position sensor. For
example an AS5304 / AS5306 adapter board can be used. See Figure 7.
The AS5304 / AS5306 AB adapter board is optional and not included in the demo kit.

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Figure 7:
Using an external position sensor
Multipole Magnet Strip
The multipole magnet strips provided in the demo kits are made by Arnold Magnetics. The
AS5304-DK-ST-1.0 has a pole pair length of 4mm and the AS5306-DK-ST-1.0 has a pole pair
length of 2.4mm. The multipole magnet strips are mounted in an aluminum/aluminium slider.
See Figure 8 and Table 3 for details.
Find additional information about magnet requirements in the position sensor datasheet.
Figure 8:
Multipole Magnet Strip
Table 3:
Demo Kit Magnet
AS5304-DK-ST
AS5306-DK-ST
W
20 mm
20.4 mm
S
5 mm
5 mm
T
0.8 mm
0.8 mm
Lpp
4 mm
2.4 mm
3
2
1
Disconnect the demo board supply
Connect the external
position sensor
(not included)
Unplug jumpers P1, P2, P3, P4

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3. How to get the kit running
(1) Power up the demo board using the USB cable.
(2) During the start-up of the demo kit, a boot screen is shown offering basic information
about position sensor, firmware version and firmware release date. See Figure 9.
(3) After the start-up the position display is shown. The position display shows the actual
position counter value in steps and the calculated position in micrometer. Move the
multipole magnet slider. The position change is displayed. See Figure 10.
(4) Pull out the slider to remove the multi-pole magnet strip. At this point, the LEDs for
magnetic field strength and index will indicate a missing magnetic field.
(5) Fit the slider back into the mechanics. Press “Set Zero” to reset the position output.
(6) Unplug the USB cable to power down the board.
Figure 9:
Demo Kit Boot Screen
Figure 10:
Demo Kit Position Display
Position Sensor
Firmware Version, Release Date
Counter Value
Calculated Position
Magnet Pole Pair Indicator Bar

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4. Design Considerations
Table 4 shows the main features and charachteristics of the AS5304A/B and AS5306A/B for
linear movement of the multi-pole magnetic strip.
Table 4:
Position sensor options
Sensor
Magnet Pole Length
Resolution
Linear Speed
Outputs
AS5304A
2.0 mm
25 µm
20 m/s
Push Pull
AS5304B
2.0 mm
25 µm
20 m/s
Open Drain
AS5306A
1.2 mm
15 µm
12 m/s
Push Pull
AS5306B
1.2 mm
15 µm
12 m/s
Open Drain
Magnet type and position
Note that the Hall sensor array is located 1.02 mm off the horizontal chip center towards the
row of pins 11…20 as shown in Figure 11.
The magnet strip should be centered over the Hall sensor array.
Figure 11:
Hall sensor array in package

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5. Schematics and BOM
Schematics
The main components of the AS5304 / AS5306 demoboard are the onboard position sensor, the
quadrature counter, the main microcontroller and the display.
For easy integration of the AS5304 / AS5306, the LS7366 quadrature counter was choosen to
interface between position sensor and microcontroller. By using this component, the actual
position can be read out directly using the SPI interface.
The Silabs C8051F320 USB microcontroller reads the position steps and calculates the position
to show them on the LCD screen.
Find the complete schematic below for reference.
Figure 12:
Demo board schematic

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BOM
Table 5:
Demo Board BOM
#
Designator
Comment
Footprint
Manufacturer
Quantity
1
*1
Displaytech 32128A-FC-BW-3
Displaytech
1
2
*2, *3, *4, *5
Jumper
TE CONNECTIVITY
4
3
C1, C3, C4, C5, C17
100n
C0603
5
4
C2, C21
10u
Chip_A
2
5
C6, C22, C23
1u
C0603
3
6
C7, C8, C9, C10, C11,
C12, C13, C14, C15
1u/16V
C0603
9
7
C16, C18
15p
C0603
2
8
C19
NC (1u)
C0603
1
9
C20
22u
Chip_A
1
10
D1
BAS70-05
SOT23
MULTICOMP
1
11
D2
BAT54
SOT23
FAIRCHILD
1
12
D3
LL4001
MELF
MULTICOMP
1
13
DS1, DS3
LED_G
SMD_LED
OSRAM Opto
2
14
DS2
LED_Y
SMD_LED
OSRAM Opto
1
15
DS4
LED3_G
SMD_LED
OSRAM Opto
1
16
J1
DisplayTech32128a
Tech32128aDispla
y
HRS (HIROSE)
1
17
J2, J4
NC
HDR1X4
2
18
J3
440478-1
440478
TE CONNECTIVITY
/ AMP
1
19
J5
NC
HDR1X6
1
20
J6
NC (Reset_CNT)
PIN1_SMD
1
21
J7
NC (Header 2)
HDR1X2
1
22
P1, P2, P3, P4
Jumper2
Jumper2_Horizont
al
4
23
R1
10k
R0603
1
24
R2
68R
R0603
1
25
R3
nc
R0603
1
26
R4
33R
R0603
1
27
R5
1M
R0603
1
28
R6
47k
R0603
1
29
R7, R8, R9
1k
R0603
3
30
R10
4.7k
R0603
1
31
R11
22k
R0603
1
32
R12
68k
R0603
1
33
R13
1k
0603_S
1
34
S1
SW-PB
Multicom_MCPTF
MULTICOMP
1
35
U1
C8051F320
TQFP32
SILICON
LABORATORIES
1
36
U2
AS5304_06 A
TSSOP20
ams
1
37
U3
LS7366R-S
SO-G14
US-Digital
1
38
U4
AS1360-50
SOT23
ams
1
39
U5
AS1360-30
SOT23
AMS
1
40
Y1
20MHz
HC49/4H_SMX
IQD FREQUENCY
PRODUCTS
1
41
Mechanics
Refer to mechanical drawings
1
42
Screws
M2x6mm (for Mechanics)
NETTLEFOLDS
4
43
Screws
M3x5mm (for Spacer)
4
46
Spacer
M3x6mm
HARWIN
4
47
Magnet
AS5000 MS20-50
Arnold Magnetics
0.2
48
Transportkarton 10-TVS
Use additional foam material
1
49
USB Cable
USB 2.0 Cable Type A ->
Type Bmini
1

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6. Ordering Information
Table 6:
Ordering Information
Ordering Code
Description
comments
AS5304-DK-1.0
AS5304 Demo Kit
2.0 mm pole length / 25 µm step
AS5306-DK-1.0
AS5306 Demo Kit
1.2 mm pole length / 15 µm step

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Copyright
Copyright © 1997-2012, ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, 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.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its
Term of Sale. ams AG makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices from patent infringement. ams
AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to
designing this product into a system, it is necessary to check with ams AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or high reliability applications, such as military,
medical life-support or lifesustaining equipment are specifically not recommended without additional
processing by ams AG for each application. For shipments of less than 100 parts the manufacturing flow might
show deviations from the standard production flow, such as test flow or test location.
The information furnished here by ams AG is believed to be correct and accurate. However, 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.
Contact Information
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T. [phone]
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