AS5043
Data Sheet – Electrical Characteristics
19.3.6 OPAMP Output Stage
Parameter
Symbol
Min
Typ
Max
Unit Note
VDD5V
3.0
5.5
V
Power Supply Range
Parallel Load
Capacitance
CL
100
pF
Parallel Load Resistance
RL
A0
4.7
92
3.3V operation
kΩ
Open Loop Gain
Offset Voltage RTI
Output Range Low
130
144
5
dB
VosOP
VoutL
-5
mV 3 sigma
0.05 *
VDD5V
V
Linear range of analog output
0.95 *
VDD5V
Output Range High
VoutH
Isink
V
mA
Permanent short circuit current:
Vout to VDD5V
Permanent short circuit current:
Vout to VSS
Over full temperature range;
BW= 1Hz…10MHz,Gain = 2x
Internal; OTP: FB_int EN = 1
External OTP: FB_int EN = 0
(default)
4.8
4.6
160
50
66
Current capability sink
Current capability source
Output noise
Isource
Vnoise
mA
220
2
490
µVrms
OPAMP gain (non-
inverting)
Gain
1
4
With external resistors, pins Vout
[#12] and FB [#11]: see Figure 14
19.4 Magnetic Input Specification
(operating conditions: Tamb = -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless
otherwise noted)
Two-pole cylindrical diametrically magnetised source:
Parameter
Diameter
Symbol
dmag
Min
4
Typ
Max
Unit Note
6
mm
mm
Recommended magnet: Ø 6mm x 2.5mm for
cylindrical magnets
Thickness
tmag
2.5
Required vertical component of the magnetic
field strength on the die’s surface, measured
along a concentric circle with a radius of 1.1mm
Magnetic input field
amplitude
Bpk
Boff
45
75
mT
Magnetic offset
± 10
5
mT
%
Constant magnetic stray field
Including offset gradient
Field non-linearity
Absolute mode: 600 rpm @ readout of 1024
positions (see table 6)
fmag_abs
fmag_inc
Disp
10
Hz
Hz
Input frequency
(rotational speed of
magnet)
Incremental mode: no missing pulses at
rotational speeds of up to 10,000 rpm (see
table 6)
166
0.25
Max. offset between defined device center and
magnet axis
Displacement radius
mm
%/K
Recommended magnet
material and
temperature drift
-0.12
NdFeB (Neodymium Iron Boron)
SmCo (Samarium Cobalt)
-0.035
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