as5046 austriamicrosystems, as5046 Datasheet - Page 23

• Manufacturer Part Number: as5046
• Description: Programmable 12-bit 360? Magnetic Angle Encoder With Absolute 2-wire Serial And Analog Interfaces
• Manufacturer: austriamicrosystems

AS5046 Programmable 360° Magnetic Angle Encoder – Preliminary Data Sheet
12.2.1
The Angular Range selector allows a digital pre-selection
of the angular range. The AS5046 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 AS5046 for all angles up to 360°
and output voltages up to 5.5V
Revision 1.0
Magnetic field range alarm. Active
low. Leave open or connect to
VSS if not used
DSP
from
CSn
Digital serial
interface, 10bit/360°.
Leave open if not
used. CSn and CLK
may also be tied to
VSS if no used
OR1
3
SCL
Angular Range Selector
0 360 ° 0
0 180 ° 1
1 90 ° 0
1 45 ° 1
Selector
Range
OR0
4
SDO
MagRngn
6
1
PROG
digital
10 bit
8
for OTP
programming and
alignment mode
only. Leave open
or connect to VSS
if not used
0 = 0- 100 % * Vref ( def.)
1 = 10-9 0 % * Vref
Mode pin.
Default = open
(low noise)
ClampMdEN
DAC
Vref
Mode
2
0 - 100 % VDD5 V /2
NC
REF_ extEN
5
Figure 17: Analog output block diagram
External DAC reference pin.
Leave open or connect to
VSS if not used
Test pins .
www.austriamicrosystems.com
Leave open
0= int
1= ext
NC
13
DACref
NC
14
9
analog
VDD5V / 2
10bit
VDD
VDD5V
FB_intEN
Vout
Gain = 2 x (int)
0
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 AS5046 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.
+
-
out,min
16
to avoid a sudden output change when the
3.3V
0=ext
LDO
1=int
VSS
VDD3V3
DACout
7
Rf_int
30k
Rg_int
30k
VOUT
FB
DAC output pin.
Leave open if no used
11
OP-Amp feedback pin.
Leave open if not used.
15
10
12
Rf
+
1-10µF
Connect pins 15 and 16
for VDD = 3.0 – 3.6V.
Do NOT connect for
VDD = 4.5 – 5.5V!
Rg
360°angle
RLmin
out,max
= 4k7
Page 23 of 33
and V
out,max
C
<100pF
L
out,min
and