austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems application note 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 AS5030 8-bit Programmable Magnetic Rotary Encoder AS5030 AS5030-AB-2.0 Adapterboard 8 bit Programmable Magnetic Rotary Encoder OPERATION MANUAL 1 General Description The AS5030 is a contactless magnetic rotary encoder for A software programmable (OTP) zero position simplifies accurate angular measurement over a full turn of 360. assembly as the zero position of the magnet does not need It is a system-on-chip, combining integrated Hall elements, to be mechanically aligned. analog front end and digital signal processing in a single A Power Down Mode together with fast startup- and device. measurement cycles allows for very low average power To measure the angle, only a simple two-pole magnet, consumption and makes the AS5030 also suitable for battery rotating over the center of the chip is required. operated equipment. The absolute angle measurement provides instant indication of the magnets angular position with a resolution of 8 bit = 256 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. In addition to the angle information, the strength of the magnetic field is also available as a 6-bit code. Data transmission can be configured for 1-wire (PWM), 2- wires (CLK, DIO) or 3-wires (CLK, DIO, CS). 2 The AS5030 Adapterboard 2.1 Board description The AS5030 adapter board is a simple circuit allowing to test and evaluate the AS5030 rotary encoder quickly without having to build a test fixture or PCB. The PCB can be used as standalone unit or attached to a microcontroller. The standalone operation requires only a 5V power supply, the magnets angle can be read on the PWM or analog output. JP1 connector (Alarm, PWM, analog, power supply) JP2 connector (serial IO, power supply) 4 x 2.6mm mounting P2 solder bridge holes Close (default): 3 wire serial mode Open: 2 wire serial mode P1 solder bridge Close (default): Sin/Cos output disabled Open: Sin/Cos output enabled AS5030 encoder Analog Sin/Cos outputs (P1 must be opened) Figure 1: AS5030 Adapterboard Revision 1.0, 26.February 2009 Page 1 of 10 www.austriamicrosystems.com ams AG Technical content still valid