AS5403D-HTST datasheet(16/66 Pages) AMSCO

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ams Datasheet

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[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

ABS

AVG

DIFF

ABS

AVG

DIFF

Angle

Calculation

Offset Bi

Gain Bi

Mux

Bi‘

Bj‘

Angle

Magnitude

Offset Bj

Gain Bj

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