
Datasheet
AS5263
1 2 - B i t R e d u n d a n t A u t o m o t iv e A n g l e P o s i t i o n S e n s o r
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.
VDD5_B
VDD3_B
VDD5_T
VDD3_T
VDD_T
High voltage/
VDD_B
Reverse polarity
protection
OTP
Single pin
AS5263
Register
Zero
Interface
Hall Array
Sin
Position
Full Turn Output
Frontend
Amplifier
Cos
CORDIC
14-bit
Angle
Output
DSP
12
12-bit
PWM
12-bit
M
U
X
OUT
Driver
OUT_T
OUT_B
ADC
DAC
Programmable
Angle
KDOWN_T
KDOWN_B
Top Silicon Die
Bottom Silicon Die
GND_T GND_B
_T …… Pin of the Top Device
_B …… Pin of the Bottom Device
www.austriamicrosystems.com/AS5263
Revision 1.4
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