AS5161-HSOM ams

AS5161 12-Bit Magnetic Angle Position Sensor The AS5161 is a contactless magnetic angle position sensor for General Description 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 magnets 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 Ordering Information and Content Guide appear at end of datasheet. ams Datasheet Page 1 v1-04 2015-Dec-07 Document FeedbackAS51 61 Gene ral Des c rip t ion Key Benefits & Features The benefits and features of AS5161, 12-Bit Magnetic Angle Position Sensor are listed below: Figure 2: Added Value of Using AS5161 Benefits Features Great flexibility on angular excursion 360 contactless high resolution angular position sensing User programmable start and end point of the application region Saw tooth mode 1-4 slopes per revolution Simple programming Clamping levels Transition point Failure diagnostics Broken GND and VDD detection for all external load cases High-resolution output signal 12-Bit pulse width modulated (PWM) output Ideal for applications in harsh environments due to contactless Wide temperature range: - 40C to 150C position sensing 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 Contactless potentiometers Page 2 ams Datasheet Document Feedback v1-04 2015-Dec-07