AMS AS5030 Betriebshandbuch - Seite 5
Blättern Sie online oder laden Sie pdf Betriebshandbuch für Hauptplatine AMS AS5030 herunter. AMS AS5030 12 Seiten. 8 bit programmable magnetic rotary encoder
Seite druckenAS5030 8-bit Programmable Magnetic Rotary Encoder
Adapterboard Operation Manual
4 Operation use cases
4.1
Standalone Analog output mode
Figure 4: Using the analog output with the adapter board
4.2
Standalone PWM output mode
Figure 5: Using the PWM output with the adapter board
Revision 1.0, 26.February 2009
The simplest setup to test the AS5030 is to use the
adapter board in standalone mode. A 3-pin header
connector is present on JP2.
A header connector is present on JP2 on pin 1, 2, 3.
Connect a regulated power supply on 5V (pin #2) and
GND (pin #1).
The "Ana" (pin #3) is an analog output, which is an RC
filtered signal of the PWM output of the AS5030. The
external device (AD converter, voltmeter...) connected on
the "Ana" pin should have an input impedance >470k Ω,
otherwise it should be buffered with an op. amp.
By rotating the magnet, a progressive analog voltage
from 0 to 5V can be measured on the "Ana" pin (JP2 #3).
Rotating the magnet clock wise (AS5030 chip on the top
side) increases the Ana voltage, and counter clockwise
will decrease the voltage.
Because of the RC filter, the response time of a jump
359° 0° (5V 0V) and 0° 359° (0V 5V) is 100ms.
Instead of getting a proportional analog voltage
increasing with the magnet's angle on the "Ana" output, a
PWM signal (JP2 pin #5) with a period of 581us, 2.26us
step and 5V pulse voltage can be connected to the
capture/timer input of a microcontroller in order to decode
the angle value.
Figure 6: PWM duty cycle depending on magnet position
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