AS5040 8-bit Programmable Magnetic Rotary Encoder AS5132 AS5132-AB-v1.0 Adapterboard Programmable Magnetic Rotary Encoder 1 OPERATION MANUAL General Description The AS5132 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees. It is a systemonchip, combining integrated Hall elements, analog frontend and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 8.5 bit = 360 positions per revolution. This digital data is available as serial output over the interface and as a pulse width modulated (PWM) signal. An additional U,V,W output can be used for a block commutation for a brushless DC motor. An incremental signal is available as an option. In addition to the angle information, the strength of the magnetic field is also available as a 5-bit code. A software programmable (OTP) zero position simplifies assembly as the zero position. The magnet does not need to be mechanically aligned. To optimize the torque characteristic at a certain speed theAS5132 has the option to use a static or dynamic precommutation 2 The AS5132 Adapter board 2.1 Board description The AS5132 adapter board is a simple circuit allowing test and evaluation of the AS5132 rotary encoder quickly without building a test fixture or PCB. The PCB requires 5V power supply and GND connection. To program the device or read out the absolute position of the magnet via SSI a software is mandatory. COM/INC PIN is needed to select UVW Output or ABIndex. To use the static or dynamic pre-commutation a programming on the device is mandatory. Figure 1: AS5132 Adapterboard UVW or ABIndex connection AS5132 encoder COM/INC PIN to select UVW or ABI 4 x 2.6mm mounting holes Revision 1, April 2012 Page 1 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual 2.2 Mounting the AS5132 adapter board Rotating shaft and magnet holder Bearing Not ferromagnetic (plastic, brass, copper, stainless steel, aluminum…) Casing Spacer M2~M2.5 Screw + nut AS5132-AB PCB Figure 2: AS5050 adapter board mounting and dimension A diametric magnet must be placed over on under the AS5132 encoder, and should be placed centered in y direction and 4.1mm with respect to PIN1 in x direction. Tolerance of 0.5mm. The airgap between the magnet and the encoder casing should be maintained in the range 0.5mm~2mm (magnet related). The magnet holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless steel are the best choices to make this part Revision 1, April 2012 Page 2 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual 3 AS5132 and adapter board pinout Figure 3: AS5132 adapter board connectors and encoder pinout Pin# Pin# Symbol Board AS5132 Board J1 - 1 6 GND Supply J1 - 2 15 DIO Bi-directional digital J1 - 3 17 CLK Digital input/Schmitt-Trigger Clock input for serial interface (VDDP) J1 - 4 16 CSN Digital input/Schmitt-Trigger Chip select input (active low) ( VDDP) J1 - 5 15 VDDP Supply Supply Voltage for the selected pins J1 - 6 16 5V Supply Positive supply voltage J1 - 7 5 PROG Supply SPI Clock Schmitt trigger J2 -1 6 GND Supply Supply ground J2 -2 7 U_A Digital output Communication output or incremental output J2 -3 4 V_B Digital output Communication output or incremental output J2 -4 3 W_I Digital output Communication output or incremental output J2 -5 9 C/I Digital input/Schmitt-Trigger Selection of the output J2 -6 18 DIR Digital input/Schmitt-Trigger Input signal for the pre commutation at start-up J2 -7 20 PWM/ Digital Output Type Description Supply ground Data I/O for serial interface (VDDP) PWM Output Table 1: Pin description Revision 1, April 2012 Page 3 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual 4 AS5132 adapter board hardware 4.1 AS5132-AB-1.0 schematics Figure 4: AS5132-AB-1.0 adapterboard schematics 4.2 AS5132-AB-1.0 PCB layout Figure 5: AS5132-AB-1.0 adapter board layout Revision 1, April 2012 Page 4 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual Table of contents 1 2 General Description ........................................................................................................................................................... 1 The AS5132 Adapter board ............................................................................................................................................... 1 2.1 Board description ...................................................................................................................................................... 1 2.2 3 4 Mounting the AS5132 adapter board ........................................................................................................................ 2 AS5132 and adapter board pinout..................................................................................................................................... 3 AS5132 adapter board hardware ...................................................................................................................................... 4 4.1 AS5132-AB-1.0 schematics ...................................................................................................................................... 4 4.2 AS5132-AB-1.0 PCB layout ...................................................................................................................................... 4 Table of contents ........................................................................................................................................................................ 5 Copyrights .................................................................................................................................................................................. 6 Disclaimer ................................................................................................................................................................................... 6 Contact Information .................................................................................................................................................................... 6 Revision 1, April 2012 Page 5 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual Copyrights Copyright © 1997-2010, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. 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Contact Information Headquarters austriamicrosystems AG A-8141 Schloss Premstaetten, Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com Revision 1, April 2012 Page 6 of 6 www.austriamicrosystems.com