KP236

Analog Absolute Pressure Sensor

Functional Description

Data Sheet

12

Revision 1.0, 2010-06-21

2.4

Transfer Function

The KP236 device is fully calibrated on delivery. The sensor has a linear transfer function between the applied

pressure and the output signal:

The output signal is ratiometric. Gain a and offset b are determined during calibration in order to generate the

required transfer function.

Calibrated Transfer Function

The following calibration is adjusted with the parameters a and b:

Note: The points

p

The operating pressure range is defined by the parameter 2.4 “Ambient operating pressure range” on

Page 19

Figure 3

Transfer function

Note: The application circuitry determines the current driven by the device and thus may have an impact on the

output voltage delivered by the sensor.

Table 2

Transfer function

Pressure

Output Voltage @ V

Gain and Offset

Symbol

Values

Unit

Symbol

Values

Unit

Symbol

Value

Unit

p

IN,1

40

kPa

V

OUT,1

0.5

V

a

0.01067

1/kPa

p

IN,2

115

kPa

V

OUT,2

4.5

V

b

-0.32667

–

V

10

pressure [kPa]

0.0

1.0

3.0

2.0

4.0

5.0

30

50

70

90

110

130

150

operating pressure range

maximum input pressure range