鈥?/div>
Altimeters
Figure 1 illustrates a block diagram of the internal
circuitry on the stand鈥揳lone pressure sensor chip.
V
S
3
THIN FILM
TEMPERATURE
COMPENSATION
AND
CALIBRATION
CIRCUITRY
1
GND
MPX2202
MPXV2202G
SERIES
Motorola Preferred Device
0 to 200 kPa (0 to 29 psi)
40 mV FULL SCALE SPAN
(TYPICAL)
Freescale Semiconductor, Inc...
SMALL OUTLINE PACKAGE
SURFACE MOUNT
MPXV2202GP
CASE 1369
2
4
SENSING
ELEMENT
V
out+
V
out-
MPX2202AP/GP
CASE 344B
MPXV2202DP
CASE 1351
PIN NUMBER
1
2
MPX2202DP
CASE 344C
3
4
Gnd
+V
out
V
S
鈥揤
out
5
6
7
8
N/C
N/C
N/C
N/C
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鈥搃n reference vacu-
um. 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 vacu-
um 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.
NOTE: Pin 1 is noted by the notch in
the lead.
MPX2202ASX/GSX
CASE 344F
PIN NUMBER
1
2
Gnd
+V
out
3
4
V
S
鈥揤
out
MPX2202GVP
CASE 344D
Replaces MPX2200/D
REV 2
NOTE: Pin 1 is noted by the notch in
the lead.
Motorola Sensor Device Data
漏
Motorola, Inc. 2002
For More Information On This Product,
Go to: www.freescale.com
1