Figure 1 illustrates a schematic of the internal circuitry on the stand鈥揳lone pressure
sensor chip.
NOTE: Pin 1 is the notched pin.
Vout鈥?/div>
PIN NUMBER
1
2
Gnd
+Vout
3
4
VS
鈥揤out
1
GND
Figure 1. Temperature Compensated Pressure Sensor Schematic
VOLTAGE OUTPUT versus APPLIED DIFFERENTIAL PRESSURE
The differential voltage output of the X鈥揹ucer is directly proportional to the differential
pressure applied.
The absolute sensor has a built鈥搃n 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.
Preferred
devices are Motorola recommended choices for future use and best overall value.
Senseon and X鈥揹ucer are trademarks of Motorola, Inc.
REV 3
Motorola Sensor Device Data
漏
Motorola, Inc. 1997
1