鈥?/div>
Non鈥揑nvasive Blood Pressure Measurement
Figure 1 shows 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
MPX2053
MPXV2053G
SERIES
Motorola Preferred Device
UNIBODY PACKAGE
0 to 50 kPa (0 to 7.25 psi)
40 mV FULL SCALE SPAN
(TYPICAL)
SMALL OUTLINE PACKAGE
SURFACE MOUNT
MPX2053D
CASE 344
MPXV2053GP
CASE 1369
MPX2053GP
CASE 344B
2
4
V
out+
V
out-
SENSING
ELEMENT
MPXV2053DP
CASE 1351
PIN NUMBER
1
MPX2053DP
CASE 344C
2
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 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 vacu-
um is applied to the vacuum side (P2) relative to the
pressure side (P1).
Preferred
devices are Motorola recommended choices for future use and
best overall value.
NOTE: Pin 1 is noted by the notch in
the lead.
MPX2053GSX
CASE 344F
PIN NUMBER
1
2
Gnd
+V
out
3
4
V
S
鈥揤
out
MPX2053GVP
CASE 344D
Replaces MPX2050/D
REV 3
NOTE: Pin 1 is noted by the notch in
the lead.
Motorola Sensor Device Data
漏
Motorola, Inc. 2002
1