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AS5403D-HTST датащи(PDF) 16 Page - ams AG |
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AS5403D-HTST датащи(HTML) 16 Page - ams AG |
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16 / 66 page ![]() Page 16 ams Datasheet Document Feedback [v1-06] 2015-Aug-28 AS5403A/D/E − Functional Description The AS5403 is manufactured in a CMOS process and uses lateral and vertical Hall sensor technology for sensing the magnetic field distribution in all 3D directions. The integrated 3D-Hall pixels are placed with a pixel pitch of 2.5 mm and deliver a voltage representation of the magnetic field at the surface of the IC. Through Sigma-Delta Analog / Digital Conversion and Digital Signal-Processing (DSP) algorithms, the AS5403 provides accurate high-resolution absolute angular position information. For this purpose a Coordinate Rotation Digital Computer (CORDIC) calculates the angle and the magnitude. Signal Processing Path Front The AS5403 can be configured in different operation modes. These are absolute (ABS), average (AVG) and differential (DIFF). The internal calculation scene is changed automatically with the selected mode. Figure 16: Signal Processing Path AS5403A and AS5403D (Bx and Bz) Note(s) and/or Footnote(s): 1. Yellow → Functional block 2. Blue → Readable register 3. Green → Write/Readable EEPROM parameter Functional Description Z0 Z1 X0 X1 MV 1 MV 2 MV 3 MV 4 ABS AVG DIFF ABS AVG DIFF Angle Calculation Offset Bi Gain Bi Mux Bi‘ Bj‘ Bj Bi Angle Magnitude Offset Bj Gain Bj Swap |
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