AS5045-ASSU ams

austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams sales ams.com Please visit our website at www.ams.com AS5045 Data Sheet 12 Bit Programmable Magnetic Rotary Encoder 1 General Description 3 Key Features The AS5045 is a contactless magnetic rotary encoder Contactless high resolution rotational position for accurate angular measurement over a full turn of encoding over a full turn of 360 degrees 360. It is a system-on-chip, combining integrated Hall Two digital 12bit absolute outputs: elements, analog front end and digital signal processing - Serial interface and in a single device. - Pulse width modulated (PWM) output To measure the angle, only a simple two-pole magnet, User programmable zero position rotating over the center of the chip, is required. The Failure detection mode for magnet placement magnet may be placed above or below the IC. monitoring and loss of power supply The absolute angle measurement provides instant red-yellow-green indicators display placement of indication of the magnets angular position with a magnet in Z-axis resolution of 0.0879 = 4096 positions per revolution. This digital data is available as a serial bit stream and Serial read-out of multiple interconnected AS5045 as a PWM signal. devices using Daisy Chain mode An internal voltage regulator allows the AS5045 to Tolerant to magnet misalignment and airgap operate at either 3.3 V or 5 V supplies. variations Wide temperature range: - 40C to + 125C 2 Benefits Small Pb-free package: SSOP 16 (5.3mm x 6.2mm) Complete system-on-chip 4 Applications Flexible system solution provides absolute and PWM outputs simultaneously Industrial applications: Ideal for applications in harsh environments due to - Contactless rotary position sensing contactless position sensing - Robotics No calibration required Automotive applications: - Steering wheel position sensing - Transmission gearbox encoder - Headlight position control - Torque sensing - Valve position sensing Replacement of high end potentiometers Figure 1. Typical Arrangement of AS5045 and Magnet www.austriamicrosystems.com Revision 1.7 1 33 ams AG Technical content still valid