MPXV2050 Ver la hoja de datos (PDF) - Freescale Semiconductor
Número de pieza
componentes Descripción
Lista de partido
MPXV2050
Freescale Semiconductor
MPXV2050 Datasheet PDF : 7 Pages
| |||
Pressure
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 3) 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. The
specified pressure sensor linearities are based on the end
point straight line method measured at the midrange
pressure.
Least Squares Fit
Exaggerated
Performance
Least
Square
Deviation
Straight Line
End Point
Straight Line Fit
OFFSET
0
50
100
Pressure (% Full scale)
Figure 3. Linearity Specification Comparison
Figure 4 illustrates the differential or gauge configuration
in the basic chip carrier. A silicone gel isolates the die surface
and wire bonds from the environment, while allowing the
pressure signal to be transmitted to the silicon diaphragm.
The MPXV2050 series pressure sensor operating
characteristics and internal reliability and qualification tests
are based on use of dry air as the pressure media. Media
other than dry air may have adverse effects on sensor
performance and long term reliability. Contact the factory for
information regarding media compatibility in your application.
Refer to application note AN3728, for more information
regarding media compatibility.
Silicone
Gel Die Coat
Wire
Bond
Lead
Frame
Die
P1
Stainless
Steel Cap
Thermoplastic
Case
P2
Differential Sensing
Element
Die Bond
Figure 4. SOP Package — Cross-Sectional Diagram (Not to Scale)
MPXV2050
4
Sensors
Freescale Semiconductor
Share Link: