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MPX2010DP Fiches technique(PDF) 5 Page - Freescale Semiconductor, Inc

No de pièce MPX2010DP
Description  10 kPa On-Chip Temperature Compensated & Calibrated Silicon Pressure Sensors
PDF  14 Pages
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPX2010DP Fiches technique(HTML) 5 Page - Freescale Semiconductor, Inc

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MPX2010
Sensors
Freescale Semiconductor
5
LINEARITY
Linearity refers to how well a transducer's output follows
the equation: Vout = Voff + sensitivity x P over the operating
pressure range. There are two basic methods for calculating
nonlinearity: (1) end point straight line fit (see Figure 4) or
(2) a least squares best line fit. While a least squares fit gives
the “best case” linearity error (lower numerical value), the
calculations required are burdensome.
Conversely, an end point fit will give the “worst case” error
(often more desirable in error budget calculations) and the
calculations are more straightforward for the user.
Freescale’s specified pressure sensor linearities are based
on the end point straight line method measured at the
midrange pressure.
Figure 4. Linearity Specification Comparison
PRESSURE (P1)/VACUUM (P2) SIDE IDENTIFICATION TABLE
Freescale designates the two sides of the pressure sensor
as the Pressure (P1) side and the Vacuum (P2) side. The
Pressure (P1) side is the side containing silicone gel which
isolates the die from the environment. The Freescale MPX
pressure sensor is designed to operate with positive
differential pressure applied, P1 > P2.
The Pressure (P1) side may be identified by using the
following table.
Least
Square
Deviation
Pressure (% Full Scale)
0
50
100
End Point Straight
Line Fit
Exaggerated
Performance
Curve
Least Squares Fit
Offset
Straight Line
Deviation
Table 3. Pressure (P1) Side Delineation
Part Number
Case Type
Pressure (P1) Side Identifier
MPX2010D
344
Stainless Steep Cap
MPX2010DP
344C
Side with Part Marking
MPX2010GP
344B
Side with Port Attached
MPX2010GS
344E
Side with Port Attached
MPX2010GSX
344F
Side with Port Attached
MPXV2010GP
1369
Side with Port Attached
MPXV2010DP
1351
Side with Part Marking



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