AS5403D-HTST datasheet(17/66 Pages) AMSCO

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ams Datasheet

Page 17

[v1-06] 2015-Aug-28

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AS5403A/D/E − Functional Description

Figure 17:

Signal Processing Path AS5403E (Bx and By)

Note(s) and/or Footnote(s):

1. Yellow

→ Functional block

2. Blue

→ Readable register

3. Green

→ Write/Readable EEPROM parameter

The individual component from 3D Hall pixel 0 and 3D Hall pixel

1 are measured sequentially. Refer to Figure 4. This sequence is

predefined and depends also on the mode selection (absolute,

average or differential). The digital values after conversation are

stored in the measurement value registers MV1 to MV4. These

values represent the raw data. The pre-calculation leads to

internal result values of Bi’ and Bj‘. The final Bi and Bj values are

available after further manipulation possibilities like offset or

gain manipulation. In addition is an exchange of Bi and Bj

possible over the swap function. The calculated angle and

magnitude can be read out too.

Internal Calculation Formulas

Figure 18:

Formulas for Calculation

Absolute Mode (ABS)

Average Mode (AVG)

Differential Mode (DIFF)

ABS

AVG

DIFF

ABS

AVG

DIFF

Angle

Calculation

Offset Bi

Gain Bi

Mux

Bi‘

Bj‘

Angle

Magnitude

Offset Bj

Gain Bj

Swap

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