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AS5040
Data Sheet
Parameter
Magnetic offset
Symbol
B off
Min
Typ
Max
± 10
Unit
mT
Note
Constant magnetic stray field
Field non-linearity
5
%
Including offset gradient
Input frequency
(rotational speed of
magnet)
Displacement radius
Chip placement
tolerance
Recommended magnet
material and
temperature drift
f mag_abs
f mag_inc
Disp
-0.12
-0.035
10
500
0.25
0.485
±0.23
5
Hz
Hz
mm
mm
%/K
Absolute mode: 600 rpm @ readout of 1024
positions (see Table 6)
Incremental mode: no missing pulses at
rotational speeds of up to 30,000 rpm (see
Table 6)
Max. X-Y offset between defined IC package
center and magnet axis (see Figure 21)
Max. X-Y offset between chip center and
magnet axis.
Placement tolerance of chip within IC
package (see Figure 23)
NdFeB (Neodymium Iron Boron)
SmCo (Samarium Cobalt)
Electrical System Specifications
(operating conditions: T amb = -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise
noted)
Parameter
Symbol
Min
Typ
Max
Unit
Note
Resolution
7 bit
8 bit
9 bit
10 bit
RES
LSB
2.813
1.406
0.703
0.352
10
bit
deg
0.352 deg
Adjustable resolution only available
for incremental output modes;
Least significant bit, minimum step
Maximum error with respect to the
Integral non-linearity
(optimum)
INL opt
± 0.5
deg
best line fit.
Verified at optimum magnet
placement, T amb =25 °C.
Maximum error with respect to the
Integral non-linearity
(optimum)
INL temp
± 0.9
deg
best line fit.
Verified at optimum magnet
placement ,
T amb = -40 to +125°C
Best line fit = (Err max – Err min ) / 2
Integral non-linearity
Differential non-linearity
Transition noise
Hysteresis
INL
DNL
TN
Hyst
0.704
± 1.4
± 0.176
0.12
deg
deg
Deg
RMS
deg
Over displacement tolerance with
6mm diameter magnet, T amb = -40 to
+125°C
10bit, no missing codes
RMS equivalent to 1 sigma
Incremental modes only
Power-on reset thresholds
On voltage; 300mV typ.
hysteresis
Off voltage; 300mV typ.
hysteresis
Power-up time
System propagation delay
absolute output
V on
V off
t PwrUp
t delay
1.37
1.08
2.2
1.9
2.9
2.6
50
48
V
ms
μs
DC supply voltage 3.3V (VDD3V3)
DC supply voltage 3.3V (VDD3V3)
Until offset compensation finished
Includes delay of ADC and DSP
www.austriamicrosystems.com
Revision 2.10
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