MPX2202

Sensors

2

Freescale Semiconductor

Figure 1 illustrates a block diagram of the internal circuitry

on the stand-alone pressure sensor chip.

Figure 1. Temperature Compensated Pressure Sensor Schematic

VOLTAGE OUTPUT VERSUS APPLIED DIFFERENTIAL PRESSURE

The differential voltage output of the sensor is directly

proportional to the differential pressure applied.

The absolute sensor has a built-in reference vacuum. The

output voltage will decrease as vacuum, relative to ambient,

is drawn on the pressure (P1) side.

The output voltage of the differential or gauge sensor

increases with increasing pressure applied to the pressure

(P1) side relative to the vacuum (P2) side. Similarly, output

voltage increases as increasing vacuum is applied to the

vacuum (P2) side relative to the pressure (P1) side.

Sensing

Element

2

3

4

1

Thin Film

Temperature

Compensation

And

Calibration

Circuitry

GND

1. Exposure beyond the specified limits may cause permanent damage or degradation to the device.

Rating

Symbol

Value

Unit

Maximum Pressure (P1 > P2)

800

kPa

Storage Temperature

-40 to +125

°C

Operating Temperature

-40 to +125

°C