User Manual – AS5304/AS5306 –TS_EK_AB-2.1
AS5304/AS5306
160-step Linear Incremental Position Sensor with Linear analog and ABI output
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User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
Table of Contents
5
6
7
7.1
7.2
8
9
10
1
2
2.1
2.2
3
4
General Description ............................................................................................................. 3
The AS5304/5306-TS_EK_AB ............................................................................................. 3
Board description ................................................................................................................. 3
Mounting the AS5304/AS5306-TS_EK_AB ......................................................................... 4
AS5304/AS5306 sensor and board pinout .......................................................................... 5
Operation cases ................................................................................................................... 6
AS5304 Differences to AS5306 ........................................................................................... 7
Kit Content ........................................................................................................................... 7
AS5304/AS5306 adapter board hardware ........................................................................... 8
AS5304/AB5306-TS_EK_AB schematics ............................................................................ 8
AS5304/AS5306-TS_EK_AB layout .................................................................................... 8
Copyright .............................................................................................................................. 9
Disclaimer ............................................................................................................................ 9
Contact Information .............................................................................................................. 9
Revision History
Revision Date
1.0 01.10.2009
1.1 09.07.2013
Owner azen
Description
Initial revision
Updated to new template
1.2 27.10.2016 azen Added 6. Kit content / change name www.ams.com Revision 1.2 / 27.10.2016 page 2/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
1 General Description
The AS5304 and AS5306 are singlechip IC’s with integrated Hall elements for measuring linear motion using multi-pole magnetic strips.
The AS5304/AS5306 are mounted off-axis underneath a multi-pole magnetized strip and provides a quadrature incremental output with 40 pulses per pole period (resolution of 25µm per step) at speeds of up to 20 meters/sec.
A single index pulse is generated once for every pole pair at the Index output. The pole pair length is 4mm (2mm north/ 2mm south). The chip accepts a magnetic field strength down to 5mT (peak).
Figure 1:
Linear Position Sensor AS5304 + Multipole Magnetstrip
2 The AS5304/5306-TS_EK_AB
2.1 Board description
The AS5304/AS5306-TS_EK_AB is a simple circuit allowing, testing and evaluating the
AS5304/AS5306 linear encoders quickly without having to build a test fixture or PCB.
The normal operation requires only a 5V power supply, the quadrature AB outputs are attached to a microcontroller of quadrature counter.
Figure 2:
AS5304/AS5306 AB
JP1 connector
(Power supply, quadrature, signal level, index)
AS5304/AS5306 linear & rotary motion sensor
4 x 2.6mm mounting holes www.ams.com Revision 1.2 / 27.10.2016 page 3/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
2.2 Mounting the AS5304/AS5306-TS_EK_AB
A multipole magnetic strip, pole pair length = 4mm must be placed over the AS5304/AS5306 as shown on Figure 3. The middle axis of the strip and of the AS5304/AS5306 ICs is shifted by 1mm.
The airgap between the magnet and the AS5304/AS5306 casing should be maintained below
0.8mm. Note that the strip side facing the AS5304/AS5306 ICs the opposite side of the metallic tape.
The magnet holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless steel are the best choices to make this part.
Figure 3:
AS5304/AS5306 adapter board mounting and dimension
Strip
Magnet
AS5304
≤ 0.8mm
PCB
Metal tape
(holder)
22mm
JP1
Ind AO B A GND 5V
4x2.6mm
Strip
Magnet
AS5304
AS5304
18mm
Strip
Magnet
AS5304
1 mm www.ams.com Revision 1.2 / 27.10.2016 page 4/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
3 AS5304/AS5306 sensor and board pinout
Figure 4:
AS5304/AS5306 adapter board connectors and encoder pinout
JP1
Ind AO B A GND 5V
AS5304A
Table 1:
Pin description
JP1
Board
Pin# Pin#
AS530X
1
2
Symbol
3, 7, 16 5V
1 GND
Type
S
S
AO
VDD
Index test test
VSS
A
VDDP
B test
3
4
5
6
2
4
6
8
A
B
AO
INDEX
DO
DO
AO
DO
1
7
8
5
6
2
3
4
9
10
Description
20
19
18
17
16
15
14
13
12
11
ZPZ test test test
VDDA_Hall test_GND test test test test
Positive supply voltage, 4.5V to 5.5V
Supply ground
Clock Input of Synchronous Serial Interface; Schmitt-
Trigger input
Chip Select for serial data transmission, active high;
Schmitt-Trigger input, external pull-down resistor (~50k
) required in readonly mode
Data output / command input for digital serial interface
Command input for digital serial interface. Connect to
GND if not used.
Pin types:
S: supply pin
DO: digital output
AO: analog output www.ams.com Revision 1.2 / 27.10.2016 page 5/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
4 Operation cases
Connect a regulated power supply on 5V (pin #1) and GND (pin #2).
Connect the A and B outputs to a quadrature counter or microcontroller inputs. The index output is optional, if a pulse is needed at each magnet pole pair transition.
For more information, please refer to the AS5304/AS5306 datasheet.
Figure 5:
Using the analog output with the adapter board
MCU or quadrature counter
A
B
JP1
Ind AO B A GND 5V
+5V
GND
Regulated
Power
Supply
www.ams.com
AS5304
Revision 1.2 / 27.10.2016 page 6/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
5 AS5304 Differences to AS5306
Table 2:
Differences AS5304 & AS5306
Building Block AS5304
Ring magnet radius 2mm
≤0.8mm Vertical Distance between Magnet and IC
Resolution 1 LSB = 25µm
Magnetic pole pair lenght
4mm
Magnetic ring diameter
= [pole length] *
[number of pole pairs]
/ π
4 * 22 / 3.14 = 28.01mm
Max. linear travelling speed = 4mm * 5000
1/sec = 20,000mm/sec = 20m/sec
Maximum linear travelling speed =
5000 * [pole pair length]
Power supply current min. 25mA ; max. 35mA
AS5306
1.2mm
≤0.4mm
1 LSB = 15µm
2.4mm
2.4 * 22 / 3.14 = 16.8mm
Max. linear travelling speed =
2.4mm * 5000 1/sec =
12,000mm/sec = 12m/sec min. 20mA ; max. 30mA
6 Kit Content
Table 3:
Kit content of AS5304/AS5306-TS_EK_AB
Name Description
AS5304 / AS5306-TS_EK_AB Linear Incremental Position Sensor Adapterboard
AS5000-MS20-50 Multipole Magnet Strip
Quantity
1
1 www.ams.com Revision 1.2 / 27.10.2016 page 7/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
7 AS5304/AS5306 adapter board hardware
7.1 AS5304/AB5306-TS_EK_AB schematics
Figure 6:
AS5304/AS5306-TS_EK_AB-2.1 schematics
7.2 AS5304/AS5306-TS_EK_AB layout
Figure 7:
AS5304/AS5306-TS_EK_AB-2.1 layout www.ams.com Revision 1.2 / 27.10.2016 page 8/9
User Manual
– AS5304/AS5306 – TS_EK_AB – 2.1
8 Copyright
Copyright ams AG, Tobelbader Strasse 30, 8141 Unterpremstätten, 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.
9 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. 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 commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams
AG for each application. This Product is provided by ams “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. 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.
10 Contact Information
Headquarters ams AG
Tobelbader Strasse 30
8141 Unterpremstaetten
Austria
T. +43 (0) 3136 500 0
For Sales Offices, Distributors and Representatives, please visit: http://www.ams.com/contact www.ams.com Revision 1.2 / 27.10.2016 page 9/9
