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AS5132 Dataheets PDF



Part Number AS5132
Manufacturers ams
Logo ams
Description 360 Step (8.5 bit) Programmable High Speed Magnetic Rotary Encoder
Datasheet AS5132 DatasheetAS5132 Datasheet (PDF)

AS5132 360 Step (8.5 bit) Programmable High Speed Magnetic Rotary Encoder 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 systemon-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 indicatio.

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AS5132 360 Step (8.5 bit) Programmable High Speed Magnetic Rotary Encoder 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 systemon-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 Figure 1. AS5132 Block Diagram 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. VDD5V VDDP AS5132 Test(3:0) COM/INC Step Mode Commutation Interface Pre-Commutation S U_A V_B W_I DIR TC GND Hall Array & Frontend Amplifier Tracking ADC & Angle Decoder Mag AGC Zero Adder Angle OTP PWM Decoder Absolute Serial Interface (SSI) Diagnostic PWM DIO CSN CLK Diag PROG www.ams.com Revision 1.4 1 - 27 AS5132 Datasheet - Contents Contents 1 General Description .................................................................................................................................................................. 1 2 Key Features............................................................................................................................................................................. 1 3 Applications............................................................................................................................................................................... 1 4 Pin Assignments ....................................................................................................................................................................... 3 4.1 Pin Descriptions.................................................................................................................................................................................... 3 5 Absolute Maximum Ratings ...................................................................................................................................................... 4 6 Electrical Characteristics........................................................................................................................................................... 5 6.1 Operating Conditions............................................................................................................................................................................ 5 6.2 System Parameters .............................................................................................................................................................................. 5 6.3 Magnet Specifications .......................................................................................................................................................................... 5 6.4 Programming Parameters .................................................................................................................................................................... 5 6.5 DC Characteristics of Digital Inputs...................................................................................................................................................... 6 6.6 DC Characteristics of Digital Outputs ................................................................................................................................................... 6 6.


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