HAR2425 datasheet(15/33 Pages) MICRONAS

Il numero della parte	HAR2425

Spiegazioni elettronici	High-Precision Dual-Die Programmable Linear Hall-Effect Sensor Family

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Produttore elettronici	MICRONAS [Micronas]

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DATA SHEET

HAR 24xy

Micronas

July 14, 2015; DSH000170_001EN

3.2.2.4. Setpoint Linearization Accuracy

The set point linearization in general allows to linearize

a given output characteristic by applying the inverse

compensation curve.

For this purpose the compensation curve will be

divided into 16 segments with equal distance. Each

segment is defined by two setpoints, which are stored

in EEPROM. Within the interval, the output is calcu-

lated by linear interpolation according to the position

within the interval.

Fig. 3–7: Linearization - Principle

Fig. 3–8: Linearization - Detail

xnl: non linear distorted input value

yl: linearized value

 remaining error

The constraint of the linearization is that the input char-

acteristic has to be a monotonic function. In addition to

that it is recommended that the input does not have a

saddle point or inflection point, i.e. regions where the

input is nearly constant. This would require a high den-

sity of set points

-4

-3

-2

-1

x10

-4

-3

-2

-1

x10

Linearized

Distorted

Compensation

ysn

ysn+1

xnl

input



xsn+1

xsn

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