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AS5145 Datasheet(PDF) 8 Page - ams AG

Part # AS5145
Description  12-Bit Programmable Magnetic Rotary Encoder
Download  36 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS5145 Datasheet(HTML) 8 Page - ams AG

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Revision 1.10
8 - 36
AS5145
Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6.1 Magnetic Input Specification
TAMB = -40 to +150°C, VDD5V = 3.0 to 3.6V (3V operation) VDD5V = 4.5 to 5.5V (5V operation) unless otherwise noted.
Two-pole cylindrical diametrically magnetized source:
IO
Output current
VDD5V: 4.5V
4
mA
VDD5V: 3V
2
DC Characteristics CMOS Output: PWM
VOH
High level output voltage
VDD5V –
0.5
V
VOL
Low level output voltage
VSS
+0.4
V
IO
Output current
VDD5V: 4.5V
4
mA
VDD5V: 3V
2
DC Characteristics CMOS Output: A, B, Index
VOH
High level output voltage
VDD5V –
0.5
V
VOL
Low level output voltage
VSS
+0.4
V
IO
Output current
VDD5V: 4.5V
4
mA
VDD5V: 3V
2
DC Characteristics Tri-state CMOS Output: DO
VOH
High level output voltage
VDD5V –
0.5
V
VOL
Low level output voltage
VSS
+0.4
V
IO
Output current
VDD5V: 4.5V
4
mA
VDD5V: 3V
2
IOZ
Tri-state leakage current
1
µA
1. Either with 3.3V or 5V supply.
Table 4. Magnetic Input Specification
Symbol
Parameter
Condition
Min
Typ
Max
Unit
dmag
Diameter
Recommended magnet: Ø 6mm x 2.5mm for
cylindrical magnets
46
mm
tmag
Thickness
2.5
mm
Bpk
Magnetic input field amplitude
Required vertical component of the magnetic
field strength on the die’s surface, measured
along a concentric circle with a radius of
1.1mm
45
75
mT
Boff
Magnetic offset
Constant magnetic stray field
± 10
mT
Field non-linearity
Including offset gradient
5
%
fmag_abs
Input frequency
(rotational speed of magnet)
153 rpm @ 4096 positions/rev;
fast mode
2.54
Hz
38 rpm @ 4096 positions/rev; slow mode
0.63
Table 3. Electrical Characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit


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