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Motorola Sensor Device Data
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The MPX2100 series 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
 Easy–to–Use Chip Carrier Package Options
 Available in Absolute, Differential and Gauge Configurations
 Ratiometric to Supply Voltage
 ±
0.25% Linearity (MPX2100D)
Application Examples
 Pump/Motor Controllers
 Robotics
 Level Indicators
 Medical Diagnostics
 Pressure Switching
 Barometers
 Altimeters
Figure 1 illustrates a block diagram of the internal circuitry on the stand–alone
pressure sensor chip.
Figure 1. Temperature Compensated Pressure Sensor Schematic
VS
3
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 absolute sensor has a built–in reference vacuum. 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 vacuum is applied to the vacuum (P2) side
relative to the pressure (P1) side.
SEMICONDUCTOR TECHNICAL DATA
0 to 100 kPa (0 to 14.5 psi)
40 mV FULL SCALE SPAN
(TYPICAL)
UNIBODY PACKAGE
MPX2100AP/GP
CASE 344B
MPX2100ASX/GSX
CASE 344F
MPX2100A/D
CASE 344
MPX2100DP
CASE 344C
PIN NUMBER
1
2
Gnd
+Vout
3
4
VS
–Vout
NOTE:  Pin 1 is noted by the notch in
the lead.
REV 9
F
Freescale Semiconductor, Inc.
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