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 Datasheet AS5134 360 Step Programmable High Speed Magnetic Rotary Encoder Two digital 360 step (8.5 bit) absolute outputs: Serial interface 1 General Description and Pulse width modulated (PWM) output The AS5134 is a contactless magnetic rotary encoder for accurate User programmable zero position and sensitivity angular measurement over a full turn of 360. It is a system-on-chip, High speed: up to 76875 rpm combining integrated Hall elements, analog front-end and digital signal processing in a single device. Direct measurement of magnetic field strength allows exact determination of vertical magnet distance To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required. The absolute angle measurement Incremental Outputs ABI Quadrature: 90 ppr, step direction: provides instant indication of the magnets angular position with a 180ppr, fixed pulse width 360ppr resolution of 8.5 bit = 360 positions per revolution. This digital data is BLDC Outputs UVW, selectable for 1,2,3,4,5,6 pole pairs available as a serial bit stream and as a PWM signal. In addition to Daisy-Chain mode for cascading of multiple sensors the angle information, the strength of the magnetic field is also available as a 6-bit code. 9-bit multi turn counter Data transmission can be configured for 1-wire (PWM), 2-wires Low power mode with fast startup (DCLK, DIO) or 3-wires (DCLK, DIO, CS). Wide magnetic field input range: 20- 80 mT A software programmable (OTP) zero position simplifies assembly Wide temperature range: -40C to +140C as the zero position of the magnet does not need to be mechanically aligned. Fully automotive qualified to AEC-Q100 A Power Down Mode together with fast startup and measurement Small Pb-free package: SSOP 20 cycles allows a very low average power consumption. 3 Applications 2 Key Features The AS5134 is suitable for contactless rotary position sensing, rotary 360 contactless angular position encoding switches (human machine interface), AC/DC motor position control and Brushless DC motor position control. Figure 1. AS5134 Magnetic Rotary Encoder Block Diagram U V W A B Index VDD 5 V Commutation Incremental PWM Decoder PWM Interface Interface Multiturn Counter Tracking ADC Zero & Angle DIO Pos. Angle Decoder Hall Array Absolute CS & Serial Mag CLK Frontend Interface AS5134 AGC C2 Amplifier (SSI) AGC DX Power Management OTP PROG GND www.austriamicrosystems.com/AS5134 Revision 2.3 1 - 32 ams AG Technical content still valid