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PDF AS5263 Data sheet ( Hoja de datos )
| Número de pieza | AS5263 | |
| Descripción | 12-Bit Redundant Automotive Angle Position Sensor | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
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Datasheet
AS5263
12-Bit Redundant Automotive Angle Position Sensor
1 General Description
The AS5263 is a contactless magnetic angle position sensor for
accurate angular measurement over a full turn of 360º. A sub range
can be programmed to achieve the best resolution for the
application. The AS5263 includes two AS5163 in one QFN package.
It is a system-on-chip, combining integrated Hall elements, analog
front-end, digital signal processing and best in class automotive
protection features in a single device.
To measure the angle, only a simple two-pole magnet, rotating over
the center of the chip, is required. The magnet may be placed above
or below the IC.
The absolute angle measurement provides instant indication of the
magnet’s angular position with a resolution of 0.087º = 4096
positions per revolution. The start and end point of the sub segment
will be programmed with a resolution of 14-bit (0.022º= 16384 steps
per revolution). According to this resolution the adjustment of the
application specific mechanical positions are possible. The angular
output data is available over a 12-bit PWM signal or 12-bit ratiometric
analog output.
An internal voltage regulator with over voltage protection and reverse
polarity protection allows the AS5263 to operate in automotive
application up to a voltage to 27V. Programmability over the output
pin reduces the number of pins on the application connector. The
AS5263 is the ideal solution for safety critical applications due to the
redundant approach.
Figure 1. AS5263 Block Diagram
2 Key Features
360º contactless high resolution angular position encoding
User programmable start and end point of the application region
User programmable clamping levels and programming of the
transition point
Powerful analog output
- Short circuit monitor
- High driving capability for resistive and capacitive loads
Wide temperature range: -40ºC to +150ºC
Small Pb-free package: 32-pin QFN (7x7mm)
Broken GND and VDD detection over a wide range of different
load conditions
Simplified programming due to provided programming hardware
and software
Failure detection mode for magnet placement monitoring and
loss of power supply
Indication of high voltage condition
3 Applications
The AS5263 is ideal for automotive applications like transmission
gearbox position sensor, headlight position control, torque sensing,
valve position sensing, pedal position sensing, throttle position
sensing, and non-contact potentiometers.
VDD_T
VDD_B
VDD5_B VDD3_B
VDD5_T VDD3_T
High voltage/
Reverse polarity
protection
OTP Single pin
Register Interface
AS5263
Hall Array
Frontend
Amplifier
Sin
Cos
CORDIC
14-bit
Angle
ADC
Zero
Position
Output
DSP
12
Full Turn Output
12-bit M
PWM U
12-bit X
DAC
Programmable
Angle
OUT
Driver
GND_T GND_B
Top Silicon Die
Bottom Silicon Die
_T …… Pin of the Top Device
_B …… Pin of the Bottom Device
OUT_T
OUT_B
KDOWN_T
KDOWN_B
www.austriamicrosystems.com/AS5263
Revision 1.4
1 - 37
1 page  
AS5263
Datasheet - Absolute Maximum Ratings
5 Absolute Maximum Ratings
Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of
the device at these or any other conditions beyond those indicated in Electrical Characteristics on page 6 is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Table 2. Absolute Maximum Ratings
Symbol
Parameter
Electrical Parameters
VDD
DC supply voltage at pin VDD
Overvoltage
VOUT
Output voltage OUT
VKDOWN
Output voltage KDOWN
VDD3
DC supply voltage at pin VDD3
VDD5
DC supply voltage at pin VDD5
Min Max Units
-18 27
-0.3 27
-0.3 27
-0.3 5
-0.3 7
V
V
V
V
V
Comments
No operation
permanent
Iscr Input current (latchup immunity)
Electrostatic Discharge
-100 100
mA
Norm: JEDEC 78
ESD Electrostatic discharge
Temperature Ranges and Storage Conditions
Tstrg Storage temperature
±4
-55 +150
TBody
Body temperature (Lead-free package)
260
H Humidity non-condensing
MSL Moisture Sensitive Level
5 85
3
Norm: MIL 883 E method 3015
kV
This value is applicable to pins VDD, GND, OUT,
and KDOWN.
All other pins ±2 kV.
ºC Min -67ºF; Max +257ºF
t=20 to 40s,
The reflow peak soldering temperature (body
temperature) specified is in accordance with
ºC
IPC/JEDEC J-STD-020 “Moisture/Reflow
Sensitivity Classification for Non-Hermetic Solid
State Surface Mount Devices”.
The lead finish for Pb-free leaded packages is
matte tin (100% Sn).
%
Represents a maximum floor life time of 168h
www.austriamicrosystems.com/AS5263
Revision 1.4
5 - 37
5 Page 
AS5263
Datasheet - Detailed Description
7.2.3 Application Specific Programming of the Break Point
The break point BP can be programmed as well with a resolution of 14 bits. This is important when the default transition point is inside the
application range. In such a case, the default transition point must be shifted out of the application range. The parameter BP defines the new
position. The function can be used also for an on-off indication.
Figure 5. Individual Programming of the Break Point BP
180 degree
BP
90 degree
Application range
T2
T1 100%VDD
CLH CLH
0 degree
T2Y
electrical range
mechanical range
CLL
270 degree
T1Y
CLL
0
clamping range
low
T1
T2
clamping range
high
clamping range
low
7.2.4 Full Scale Mode
The AS5263 can be programmed as well in the full scale mode. The BP parameter defines the position of the transition.
Figure 6. Full Scale Mode
100 % VDD
0 360
For simplification, Figure 6 describes a linear output voltage from rail to rail (0V to VDD) over the complete rotation range. In practice, this is not
feasible due to saturation effects of the output stage transistors. The actual curve will be rounded towards the supply rails (as indicated Figure 6).
www.austriamicrosystems.com/AS5263
Revision 1.4
11 - 37
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS5263.PDF ] | |
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