ams AS5147P Adapter Board User Manual
- June 12, 2024
- ams
Table of Contents
ams AS5147P Adapter Board
Revision History
| Revision | Date | Owner | Description |
|---|---|---|---|
| 1.0 | 14.01.2014 | mzie | Initial version |
Introduction
The AS5147P adapter board is a small PCB allowing simple and quick testing or evaluation of the AS5147P magnetic position sensor without the need to build a test fixture or design an own PCB.
Kit Content
Figure 1: Kit content
| Pos. | Item | Comment |
|---|---|---|
| 1 | AS5147P-TS_EK_AB | Adapter board |
| 2 | AS5000-MD6H-2 | Diametric Magnet, D6x2.5mm, NdFeB, Bomatec AG |
Board Description
The PCB can either be connected to an external microcontroller or to the USB I&P Box which is available on our webpage. (USB I&P Box)
P1 has to be populated with a 2×8 pin header and is required for power supply
as well as SPI, ABI, UVW/PWM interfaces.
The connector JP1 allows to select between 5V or 3.3V operation.
R1 and R2 are 0 ohm resistors in 0603 package. Depending on the supply voltage
either R1 or R2 has to be populated. For 5V operation R1 has to be populated
and R2 has to be removed (default case). Vice versa for 3.3V operation.
Figure 2: AS5147P adapter board
Mounting the AS5147P adapter board
Figure 3: Mounting and dimensions
A 6×2.5mm diametric magnet must be placed over or under the AS5147P 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.
AS5147P Adapter Board And Pinout
Figure 4: AS5147P adapter board and sensor pinout
| Pin# Board | Pin# AS5147P | Symbol board | Type | Description |
|---|---|---|---|---|
| P1 – 1 | 11 | 5V | Power supply | Positive supply voltage |
| P1 – 2 | 12 | 3V3 | Power supply | 3.3V LDO output |
| P1 – 3 | NC | Not connected | ||
| P1 – 4 | 1 | CSn | Digital input | SPI chip select (active low) |
| P1 – 5 | 2 | CLK | Digital input | SPI Clock |
| P1 – 6 | 4 | MOSI | Digital input | SPI MOSI |
| P1 – 7 | 3 | MISO | Digital output | SPI MISO |
| P1 – 8 | 13 | GND | Power supply | Ground |
| P1 – 9 | 6 | B | Digital output | Incremental signal B (quadrature) |
| P1 – 10 | 7 | A | Digital output | Incremental signal A (quadrature) |
| P1 – 11 | 14 | I/PWM | Digital output | Incremental signal I (index) or PWM |
| P1 – 12 | 5 | TEST | Test pin | |
| P1 – 13 | NC | Not connected | ||
| P1 – 14 | 8 | W/PWM | Digital output | Commutation signal W or PWM |
| P1 – 15 | 9 | V | Digital output | Commutation signal V |
| P1 – 16 | 10 | U | Digital output | Commutation signal U |
Operation Case
One device SPI mode, unidirectional – 3 wire
The AS5147P 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 AS5147P are MISO, CLK, CSn. In this case the MOSI pin is tied to VDD which will result in reading only the 14-bit Angle Register (0x3FFF). See AS5147P datasheet register table, register 0x3FFF.
Figure 5: One device SPI mode, unidirectional – 3 wire
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 AS5147P the MOSI connection is required.
Figure 6: One device SPI mode, bidirectional – 4 wire
AS5147P-TS_EK_AB Hardware
AS5147P-TS_EK_AB schematics
Figure 7: AS5147P-TS_EK_AB schematics
AS5147P-TS_EK_AB PCB layout
Figure 8: AS5147P-TS_EK_AB PCB layout
Ordering & Contact Information
| Ordering Code | Description |
|---|---|
| AS5147P-TS_EK_AB | AS5147P Eval Kit Adapter Board |
Buy our products or get free samples online at:
www.ams.com/ICdirect
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www.ams.com/Technical-Support
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References
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