MPX5999D Ver la hoja de datos (PDF) - Freescale Semiconductor
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MPX5999D
Freescale Semiconductor
MPX5999D Datasheet PDF : 8 Pages
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ON-CHIP TEMPERATURE COMPENSATION, CALIBRATION AND SIGNAL CONDITIONING
Figure 2 shows the sensor output signal relative to
environments, while allowing the pressure signal to be
pressure input. Typical, minimum, and maximum output
transmitted to the silicon diaphragm.
curves are shown for operation over a temperature range of
The MPX5999D pressure sensor operating
0° to 85°C using the decoupling circuit shown in Figure 4. The
characteristics, and internal reliability and qualification tests
output will saturate outside of the specified pressure range.
are based on use of dry air as the pressure media. Media
The performance over temperature is achieved by
other than dry air may have adverse effects on sensor
integrating the shear-stress strain gauge, temperature
performance and long-term reliability. Contact the factory for
compensation, calibration and signal conditioning circuitry
information regarding media compatibility in your application.
onto a single monolithic chip.
Figure 4 shows the recommended decoupling circuit for
Figure 3 illustrates the differential or gauge configuration
interfacing the output of the integrated sensor to the A/D input
in the basic chip carrier (Case 867). A fluoro silicone gel
of a microprocessor or microcontroller. Proper decoupling of
isolates the die surface and wire bonds from harsh
the power supply is recommended.
5.0
Transfer Function:
4.5 Vout = VS*(0.000901*P+0.04) ± Error
4.0 VS = 5.0 Vdc
Temperature = 0 to 85°C
3.5
TYP
3.0
2.5
MAX
MIN
2.0
1.5
1.0
0.5
0
0 100 200 300 400 500 600 700 800 900 1000 1100
Differential Pressure (kPa)
Figure 2. Output versus Pressure Differential
Silicone
Die Coat
Wire Bond
Die
P1
Stainless Steel
Metal Cover
Lead Frame
Thermoplastic Case
P2
RTV Die
Bond
Figure 3. Cross-Sectional Diagrams (not to scale)
+5 V
1.0 µF
Vout
Vs
IPS
0.01 µF
GND
Output
470 pF
Figure 4. Recommended Power Supply Decoupling and Output Filtering
(For additional output filtering, please refer to Application Note AN1646)
Sensors
Freescale Semiconductor
MPX5999D
3
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