MPXV2010G Просмотр технического описания (PDF) - Freescale Semiconductor
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MPXV2010G
Freescale Semiconductor
MPXV2010G Datasheet PDF : 14 Pages
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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.
Least Squares Fit
Exaggerated
Performance
Curve
Least
Square
Deviation
Straight Line
Deviation
End Point Straight
Line Fit
Offset
0
50
100
Pressure (% Full Scale)
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.
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
Sensors
Freescale Semiconductor
MPX2010
5
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