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AS5134 Datasheet(PDF) 1 Page - ams AG |
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AS5134 Datasheet(HTML) 1 Page - ams AG |
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1 / 29 page  AS5134 360 Step Programmable High Speed Magnetic Rotary Encoder Data Sh eet www.austriamicrosystems.com Revision 1.6 1 - 29 1 General Description The AS5134 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360º. It is a system-on-chip, combining integrated Hall elements, analog front end 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 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 (DCLK, DIO) or 3-wires (DCLK, DIO, CS). A software programmable (OTP) zero position simplifies assembly as the zero position of the magnet does not need to be mechanically aligned. A Power Down Mode together with fast startup and measurement cycles allows for very low average power consumption. Figure 1. Block Diagram 2 Key Features 360º contactless angular position encoding Two digital 360 step (8.5 bit) absolute outputs: Serial interface and Pulse width modulated (PWM) output User programmable zero position, sensitivity High speed: up to 30.000 rpm Direct measurement of magnetic field strength allows exact determination of vertical magnet dis- tance Incremental Outputs ABI Quadrature: 90 ppr, step direction: 180ppr, fixed pulse width 360ppr BLDC Outputs UVW, selectable for 1,2,3,4,5,6 pole pairs Daisy-Chain mode for cascading of multiple sensors 9-bit multiturn counter Low power mode with fast startup Wide magnetic field input range: 20 – 80 mT Wide temperature range: - 40ºC to +140ºC Small Pb-free package: SSOP 20 3 Applications The AS5134 is suitable for contactless rotary position sensing, rotary switches (human machine interface), AC/DC motor position control and Brushless DC motor position control. Hall Array & Frontend Amplifier tracking ADC & Angle decoder Zero Pos. PWM Decoder Absolute Serial Interface (SSI) AGC OTP power management Commutation Interface PWM DIO CS CLK C2 PROG Mag AGC Angle Multiturn Counter DX Incremental Interface U V W A B Index GND VDD5V |
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