AS5403D-HTST datasheet(18/66 Pages) AMSCO

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[v1-06] 2015-Aug-28

AS5403A/D/E − Functional Description

Signal Processing Path Backend

Figure 19:

Signal Processing Path Backend

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

1. Yellow

→ functional block

2. Blue

→ Readable register

3. Green

→ Write/readable EEPROM parameter

A pre-scale function can be used to extend the angle range. This

is in particular needed in sector applications (off-axis) or small

linear strokes. This function optimizes the usage of the

linearization function in the following step. The linearization

takes maximum 33 supporting point. These points are equally

spread over the angular range. The post-processing function is

able to manipulate the output characteristic in gain, offset and

clamping. The digital output switch function uses a comparator.

The switching value and hysteresis can be defined.

Finally the configuration of the output defines the operation of

the output drivers.

Angle

Pre-Scale

Multiplication

Pre-Scale

Linearization

Factor

Linearization

Table

Angle

linearized

Offset

Gain

Clamp

Low 1

Clamp

High 1

Comparator

DSW Setting

Position

Output

Selecton

OUT Driver

Configuration

DSW Driver

Configuration

to DSW Driver

to OUT Driver

Output

Characterisics

Post

Processing

Linerization

Angle

Offset

Angle Offset

Clamping 2

Clamp

Low 2

Clamp

High 2

Position

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