AS5161 Datasheet, PDF (1/35 Pages) List of Unclassifed Manufacturers – 12-Bit Magnetic Angle Position Sensor

AS5161
12-Bit Magnetic Angle Position Sensor
1 General Description
The AS5161 is a contactless magnetic angle position sensor for
accurate angular measurement over a full turn of 360°. A sub range
can be programmed to achieve the best resolution for the
application. 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 0.022° = 16384
positions 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 pulse width modulated
(PWM) output.
The AS5161 operates at a supply voltage of 5V and the supply and
output pins are protected against overvoltage up to +20V. In addition
the supply pins are protected against reverse polarity up to –20V.
Figure 1. Typical Arrangement of AS5161 and magnet
2 Key Features
360º contactless high resolution angular position sensing
User programmable start and end point of the application region
+ linearization.
User programmable clamping levels and programming of the
transition point.
Digital PWM output
- Short circuit monitor
- High driving capability for resistive and capacitive loads
Wide temperature range: - 40°C to + 150°C
Small Pb-free package: SOIC 8.
Broken GND and VDD detection over a wide range of different
load conditions.
Saw tooth mode 1,2,3,4 slopes per revolution
3 Benefits
Unique fully differential patented solution
Best protections for automotive applications
Easy to program
Additional linearization points for output characteristic
Ideal for applications in harsh environments due to contactless
position sensing
Robust system, tolerant to magnet misalignment, air gap
variations, temperature variations and external magnetic fields
High inherent accuracy
Broken GND and VDD detection for all external load cases
4 Applications
The AS5161 is ideal for automotive applications like throttle and
valve position sensing, gearbox position sensor, tumble flap, chassis
height level, pedal position sensing and contactless potentiometers.
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