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Motorola Sensor Device Data
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The MPXM2053 device is a silicon piezoresistive pressure sensor providing a highly
accurate and linear voltage output — directly proportional to the applied pressure. The
sensor is a single, monolithic silicon diaphragm with the strain gauge and a thin–film
resistor network integrated on–chip. The chip is laser trimmed for precise span and offset
calibration and temperature compensation.
Features
Temperature Compensated Over 0
°
C to +85
°
C
Available in Easy–to–Use Tape & Reel
Ratiometric to Supply Voltage
Gauge Ported & Non Ported Options
Application Examples
Pump/Motor Controllers
Robotics
Level Indicators
Medical Diagnostics
Pressure Switching
Non–Invasive Blood Pressure Measurement
Figure 1 shows a block diagram of the internal circuitry on the stand–alone pressure
sensor chip.
VS
Figure 1. Temperature Compensated Pressure Sensor Schematic
3
X–ducer
SENSING
ELEMENT
THIN FILM
TEMPERATURE
COMPENSATION
AND
CALIBRATION
CIRCUITRY
2
4
Vout+
Vout–
1
GND
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).
Preferred
devices are Motorola recommended choices for future use and best overall value.
SEMICONDUCTOR TECHNICAL DATA
0 to 50 kPa (0 to 7.25 psi)
40 mV FULL SCALE SPAN
(TYPICAL)
PIN NUMBER
1
2
Gnd
+Vout
3
4
VS
–Vout
Motorola Preferred Device
MPXM2053D/DT1
CASE 1320
MPXM2053GS/GST1
CASE 1320A
SCALE 1:1
SCALE 1:1
MPAK PACKAGE
REV 1
F
Freescale Semiconductor, Inc.
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.