Figure 1 shows a block diagram 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 output voltage of the differential or gauge sensor increases with increasing
pressure applied to the pressure side (P1) relative to the vacuum side (P2). Similarly,
output voltage increases as increasing vacuum is applied to the vacuum side (P2)
relative to the pressure side (P1). This sensor is designed for applications where P1 is
always greater than, or equal to P2.
Senseon and X鈥揹ucer are trademarks of Motorola, Inc.
REV 2
Motorola Sensor Device Data
漏
Motorola, Inc. 1997
1