MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MPX53/D
50 kPa Uncompensated
Silicon Pressure Sensors
The MPX53/MPXV53GC series silicon piezoresistive pressure sensors provide a very
accurate and linear voltage output — directly proportional to the applied pressure. These
standard, low cost, uncompensated sensors permit manufacturers to design and add
their own external temperature compensating and signal conditioning networks.
Compensation techniques are simplified because of the predictability of Motorola’s single
element strain gauge design.
Features
• Low Cost
• Patented Silicon Shear Stress Strain Gauge Design
• Ratiometric to Supply Voltage
• Easy to Use Chip Carrier Package Options
• 60 mV Span (Typ)
• Differential and Gauge Options
SMALL OUTLINE
PACKAGE
Application Examples
• Air Movement Control
• Environmental Control Systems
• Level Indicators
• Leak Detection
• Medical Instrumentation
• Industrial Controls
• Pneumatic Control Systems
• Robotics
MPXV53GC6U
CASE 482A
Figure 1 shows a schematic of the internal circuitry
on the stand–alone pressure sensor chip.
+ VS
Sensor
GND
+ Vout
- Vout
MPXV53GC7U
CASE 482C
NOTE: Pin 1 is the notched pin.
PIN NUMBER
1
Gnd
5
N/C
2
+Vout
6
N/C
3
VS
7
N/C
4
–Vout
8
N/C
Figure 1. Uncompensated 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 vacuum is applied to the vacuum side (P2)
relative to the pressure side (P1).
Replaces MPX50/D
MPX53
MPXV53GC
SERIES
0 to 50 kPa (0–7.25 psi)
60 mV FULL SCALE SPAN
(TYPICAL)
UNIBODY PACKAGE
MPX53D
CASE 344
MPX53GP
CASE 344B
MPX53DP
CASE 344C
NOTE: Pin 1 is the notched pin.
PIN NUMBER
1
Gnd
3
VS
2
+Vout
4
–Vout
REV 2
©
Motorola Sensor
Motorola, Inc. 2002
Device
Data
1