The is a contactless magnetic angle position sensor for accurate angular measurement over a full turn 360�. A sub range can be programmed to achieve the best resolution for the application. 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 = 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 +20V. In addition the supply pins are protected against reverse polarity to �20V. Figure 1. Typical Arrangement of AS5161 and magnet
360� contactless high resolution angular position sensing User programmable start and end point of the application region
- Short circuit monitor - High driving capability for resistive and capacitive loads Wide temperature range: + 150�C
Small Pb-free package: SOIC 8. Broken GND and VDD detection over a wide range of differentUnique 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
variations, temperature variations and external magnetic fieldsHigh inherent accuracy Broken GND and VDD detection for all external load cases
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.
