ams AS5600 12-bit Programmable Contactless Potentiometer User Manual
- June 5, 2024
- ams
Table of Contents
Operation Manual: AS5600-SO_EK_AB
AS5600
12-bit Programmable Contactless Potentiometer
Revision History
Revision | Date | Owner | Description |
---|---|---|---|
1.0 | 05.05.2014 | rph | Initial Revision |
General Description
The adapter board allows an easy and fast evaluation of the AS5600 rotary
magnetic position sensor in the lab or together with an existing system. This
small factor board is fully assembled with the AS5600 position sensor and its
necessary external components. All relevant signals are available on a dual-
row 2.54mm 4-pin header footprint and can be easily wired to an existing
application. The AS5600 is a programmable Hall-based rotary magnetic position
sensor with a high-resolution 12-bit analog or PWM output for contactless
potentiometers. Based on planar Hall technology, this device measures the
orthogonal component of the flux density (Bz) from an external magnet while
rejecting stray magnetic fields.
The default range of the output is 0 to 360 degrees, but the full resolution
of the device can be applied to a smaller range by programming a zero angle
(start position) and a maximum angle (stop position).
The I²C interface is used for configuration and user programming of non-
volatile parameters in the AS5600 without requiring a dedicated programmer.
1.1 Kit Content
This kit contains the following material listed in Table 1. Additional
material can be found on our webpage.
Table 1:
Kit Content
No | Item | Description | Info |
---|---|---|---|
1 | AS5600-SO_EK_AB | ||
2 | AS5000-MD6H-1 | Reference Magnet | Find the datasheet on line at |
http://ams.com/eng/AS5000-MD6H-1
Getting Started
The AS5600 adapter board is ideal for the rapid setup of a contactless
potentiometer. Additionally to the adapter board, a sensor magnet in a
mechanical setup is required. A reference magnet comes with the kit.
2.1 Adapter Board Pin-Out
The pin-out of the adapter board is shown in Table 2. For additional
information on the AS5600 pins refer to the product datasheet.
Table 2: Adapter Board Pin-Out
Header
| Pin| Symbol| Description|
Info
---|---|---|---|---
J2| 1| SCL| I2C Clock| Use R4 if pull-up is required
J2| 2| SDA| I2C Data| Use R5 if pull-up is required
J2| 3| GND| Ground|
J2| 4| VDD| Positive Power Supply|
J3| 1| VRG| LDO Pin in 5V Mode| Leave open in 5V mode. Pull to VDD using J1 in
3.3V Mode
J3| 2| PGA| Programming Mode| Pull to GND using R3 for Programming Option B
(refer to the datasheet)
J3| 3| DIR| Direction input| CCW default. Pulled to GND using R2. Remove R2
and insert at R1 for CCW direction.
J3| 4| OUT| Output Pin| Analog Output default, PWM possible, Is used for
programming option B
2.2 Adapter Board Description
The AS5600 is connected over the dual-row 2.54mm 4-pin header footprint.
Connect the desired pins of the AS5600 using the headers and resistors.
Figure 1: Adapterboard Description 2.3 Mechanical Setup
To set up a contactless potentiometer a magnet holder and a magnet are needed
to be used with the AS5600 position sensor on a PCB. The configuration is
shown in Figure 2.
airgap 0.5 – 2.5mm
Figure 2: Mechanical Configuration
The magnet should be aligned by reading the output of the AGC register of the
AS5600. For optimal alignment, the AGC value is in the middle of the AGC
range.
Note: If the magnetic field seen by the AS5600 is below 8mT, the output
is switched off and permanent angle programming is not possible.
2.4 Electrical Setup
The adapterboard is many used in the following configurations in 5V or in 3.3V
mode.:
2.4.1 3-Wire Mode
In this mode, the power supply and the output pin of the adapterboard are
connected. To program a custom angular output range, short R3 using a 0R
resistor to enable the programming option B. Follow the step-by-step
instructions in the AS5600 datasheet to program the device.
Figure 3: Using the board in 3-Wire Mode
2.4.2 I2C Mode
Using the I2C Interface, all functions of the AS5600 can be configured and
permanently programmed. Additionally, the output and a raw angle (unmodified
value) can be read from the output registers.
Figure 4: Using the board in I2C Mode
AS5600 Configuration
All options to configure the AS5600 are shown below. The AS5600 operates with
a default configuration if no configuration was programmed.
3.1 Programming the output range
To adjust a custom angle to the full output range or to modify the Zero
Position of the device, the AS5600 must be programmed. Following options are
availbale:
- Programming start and stop position with I2C (Option A)
- Programming start and stop position in 3-Wire Mode (Option B)
- Programming an angular excursion with I2C (Option C)
Follow the step-by-step instructions in the AS5600 datasheet for one of the
above programming options.
Note: To program only the zero position with Option B, Program an angular
excursion of 360deg using Option C first.
3.2 Programming a configuration
A configuration must be written using the I2C interface. The Burn_Setting
command (Write 0x40 into register 0xFF) can be used to permanently program a
configuration.
3.2.1 Low Power Mode
Three low power modes are available to reduce the power consumption down to
1,5mA max.
3.2.2 Hysteresis
A 1 to 3 LSB hysteresis of the 12-bit resolution can be enabled.
3.2.3 Output selection
Per default, the Analog Output is active if a magnet is present. Additionally,
the Output Pin can be switched to PWM with the option to select a PWM
frequency (115Hz,230Hz,460Hz,920Hz)
3.2.4 Slow Filter
The slow filter allows for improving the output noise. The default setting for
the Slow Filter is 16x and can be reduced for faster response.
3.2.5 Fast Filter
The fast filter is active by selecting a Fast Filter Threshold. If the output
value remains below the threshold, the output noise is defined by the slow
filter setting. When exceeding the threshold, the output noise is defined from
the fast filter for fast output response. The output noise is again defined by
the slow filter as soon as the output stays in the threshold again.
3.2.6 Watchdog
If the watchdog is active, the AS5600 automatically enters Low Power Mode 3
after one minute if the output value stays within a threshold of 4 LSB.
Board Schematics, Layout, and BOM
The schematic, layout, and BOM of the adapterboard are shown below for
reference.
4.1 Schematics
The schematic of the board is shown below in Figure 5.
Figure 5: Adapterboard Schematic
Note5: Adapterboard can be used with AS5XXX-UCB-1.0 (Use 4pin I2C header
in 3.3V mode)
Note6: AS5600 I2C Address is 0x36h=
4.2 Layout and Board Dimensions
The PCB layout is shown below in Figure 6.
Figure 6: Adapterboard layout
4.3 Bill of Materials
The BOM of the PCB is below in Table 3.
Table 3:
Bill of Materials
Designator | Part | Footprint | Manufacturer | Comment |
---|---|---|---|---|
J1 | Jumper / not populated | |||
J2 | Header / not populated | |||
J3 | Header / not populated | |||
R1 | Resistor / not populated | R0603 | ||
R2 | 0R | R0603 | clockwise direction default | |
R3 | Resistor / not populated | R0603 | ||
C1 | C0603 | 0603 | ||
C2 | C0805 | 0805 | ||
R4 | Resistor / not populated | R0603 | ||
R5 | Resistor / not populated | R0603 | ||
U1 | AS5600 | SOIC-8 | amsAB | Smart Potentiometer IC |
Evaluation tools
To configure the AS5600, no dedicated programmer is needed. For fast setup
time, the USB I&P Box can be used to configure the AS5600 over I2C. The USB
I&P Box can be ordered from the AMS webpage.
Additionally, a magnet holder kit is available with consists of a distance
block and a Knob that holds the sensor magnet.
Please find the ordering information below in Table 4.
Table 4:”
Ordering Information for Evaluation Tools
Ordering Code | Description | Image |
---|---|---|
1.0 I&P Box | To configure the AS5600 | |
USBRMH05-DK-XX- | Rotary Magnet Holder for adapterboard |
Ordering Information
Please find the ordering information below in Table 5.
Table 5: Ordering Information
Ordering Code | Description | Comments |
---|---|---|
AS5600-SO_EK_AB | AS5600 Adapterboard | For rapid evaluation and prototyping |
Get additional support material online at http://www.ams.com/AS5600.
Copyright
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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
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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
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Revision 1.0 / 05.05.2014