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AS5132-HSST Datasheet(PDF) 1 Page - ams AG |
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AS5132-HSST Datasheet(HTML) 1 Page - ams AG |
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1 / 27 page  AS5132 360 Step (8.5 bit) Programmable High Speed Magnetic Rotary Encoder www.ams.com Revision 1.4 1 - 27 1 General Description The AS5132 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees. It is a system- on-chip, 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. 2 Key Features 360º contactless angular position sensing Two digital absolute outputs (8.5 bit): - Serial interface - PWM output Incremental output with adjustable number of pulses BLDC Output UVW, selectable for 1,2,3,4,5,6 pole pairs Supports external PWM clock mode Static and dynamic pre-commutation feature User programmable zero position and sensitivity High speed: up to 72,900 rpm Direct measurement of magnetic field strength allows exact determination of vertical magnet distance Incremental Outputs ABI Quadrature: 90ppr, step direction: 180ppr, fixed pulse width 360ppr 9-bit multi turn counter Wide magnetic field input range: 20 – 80 mT (typical) Wide temperature range: -40ºC to +150ºC Thin Small Pb-free package: SSOP 20 Fully automotive qualified to AEC-Q100, grade 0 3 Applications The AS5132 is suitable for contactless rotary position sensing, rotary switches (human machine interface), AC/DC motor position control and Brushless DC motor position control. Figure 1. AS5132 Block Diagram VDDP TC Tracking ADC & Angle Decoder OTP DIO PWM CLK PROG CSN PWM Decoder AGC Mag Angle Commutation Interface U_A V_B W_I VDD5V GND Pre-Commutation DIR COM/INC Diag Diagnostic Test(3:0) Zero Adder Step Mode S AS5132 Hall Array & Frontend Amplifier Absolute Serial Interface (SSI) |
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