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MPXM2010GS 数据表(PDF) 172 Page - Motorola, Inc |
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MPXM2010GS 数据表(HTML) 172 Page - Motorola, Inc |
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172 / 670 page  MPX2010 MPXV2010G SERIES 3–26 Motorola Sensor Device Data www.motorola.com/semiconductors 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 5) 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 cal- culations are more straightforward for the user. Motorola’s specified pressure sensor linearities are based on the end point straight line method measured at the midrange pressure. Figure 4. Linearity Specification Comparison LEAST SQUARE DEVIATION PRESSURE (% FULLSCALE) 0 50 100 END POINT STRAIGHT LINE FIT EXAGGERATED PERFORMANCE CURVE LEAST SQUARES FIT STRAIGHT LINE DEVIATION OFFSET PRESSURE (P1) / VACUUM (P2) SIDE IDENTIFICATION TABLE Motorola 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 Motorola MPX pressure sensor is designed to operate with positive differen- tial pressure applied, P1 > P2. The Pressure (P1) side may be identified by using the table below: Part Number Case Type Pressure (P1) Side Identifier MPX2010D 344 Stainless Steel 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 ORDERING INFORMATION — UNIBODY PACKAGE (MPX2010 SERIES) MPX Series Device Type Options Case Type Order Number Device Marking Basic Element Differential 344 MPX2010D MPX2010D Ported Elements Differential, Dual Port 344C MPX2010DP MPX2010DP Gauge 344B MPX2010GP MPX2010GP Gauge, Axial 344E MPX2010GS MPX2010D Gauge, Axial PC Mount 344F MPX2010GSX MPX2010D ORDERING INFORMATION — SMALL OUTLINE PACKAGE (MPXV2010G SERIES) Device Type Options Case No. MPX Series Order No. Packing Options Marking Ported Elements Gauge, Side Port, SMT 1369 MPXV2010GP Trays MPXV2010G Differential, Dual Port, SMT 1351 MPXV2010DP Trays MPXV2010G Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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