as5043 austriamicrosystems, as5043 Datasheet - Page 12

• Manufacturer Part Number: as5043
• Description: 10-bit Programmable 360? Magnetic Angle Encoder With Absolute Digital And Analog Outputs
• Manufacturer: austriamicrosystems

AS5043 Programmable 360° Magnetic Angle Encoder
12.2.1
The Angular Range selector allows a digital pre-selection
of the angular range. The AS5043 can be configured for
a full scale angular range of 45°,90°,180° or 360°. In
addition, the Output voltage versus angle response can
be fine-tuned by setting the gain of the OP-AMP with
external resistors and the maximum output voltage can
be set in the DAC.
The combination of these options allows to configure the
operation range of the AS5043 for all angles up to 360°
and output voltages up to 5.5V
*) Note: the resolution on the digital SSI interface is always 10bit (0.35°/step) over 360°, independent on analog mode
Revision 1.6, 3-Oct-06
Output
Range1
0
0
1
1
Angular range Selector :
Output
Range0
0
1
0
1
Mode
3 6 0 ° a n g u la r ra n g e (d e fa u lt)
1 8 0 ° a n g u la r ra n g e
9 0 ° a n g u la r ra n g e
4 5 ° a n g u la r ra n g e
1 0 2 3
1 0 2 3
1 0 2 3
5 1 1
0
0
0
0
0
0 °
0
0 °
0
0 °
0
0 °
1 2 8
4 5 °
Table 5: Digital Range Selector programming option
2 5 6
2 5 6
2 5 6
2 5 6
9 0 °
9 0 °
9 0 °
9 0 °
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1 8 0 °
5 1 2
5 1 2
5 1 2
5 1 2
1 8 0 °
1 8 0 °
1 8 0 °
6 4 0
2 2 5 °
The response curve for the analog output is linear for the
selected range (45°/90°/180°/360°). In addition, the
slope is mirrored at 180° for 45°- and 90°- modes and
has a step response at 270° for the 180°-mode. This
allows the AS5043 to be used in a variety of applications.
In these three modes, the output remains at V
V
mechanical angle is rotated beyond the selected analog
range. In 360°-mode, a jitter between V
at the 360° point is also prevented due to a hysteresis.
7 6 8
7 6 8
7 6 8
out,min
2 7 0 °
2 7 0 °
2 7 0 °
to avoid a sudden output change when the
1 0 2 4
1 0 2 4
1 0 2 4
1 0 2 4
3 6 0 °
3 6 0 °
3 6 0 °
3 6 0 °
a n g le *)
a n g le
a n g le
a n g le
Note
default mode,
analog resolution= 10bit
(1024 steps) over 360°
analog step size:
1LSB = 0.35°
analog resolution= 10bit
(1024 steps) over 180°
Analog step size:
1LSB = 0.175°
analog resolution= 10bit
(1024 steps) over 90°
Analog step size:
1LSB = 0.088°
analog resolution=
9 bit (512 steps) over 45°
Analog step size:
1LSB = 0.088°
out,max
Page 12 of 26
and V
out,max
out,min
and