Datasheet > MPX2200_08

MPX2200_08

更新时间： 2022-12-29 03:12:03

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		传感器压力传感器温度补偿
页数	文件大小	规格书
8页	118K
描述
200 kPa On-Chip Temperature Compensated Silicon Pressure Sensors

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MPX2200_08 数据手册

Pressure

On-Chip Temperature Compensation and Calibration

VS = 10 V_DC

T_A= 25°C

P1 > P2

TYP

Span

Range

(TYP)

MAX

MIN

-5

Offset

(TYP)

kPa

PSI

7.25

100 125

14.5

Pressure

150

21.75

175 200

Figure 2. Output vs. Pressure Differential

Figure 2 shows the output characteristics of the MPX2200

series at 25°C. The output is directly proportional to the

differential pressure and is essentially a straight line.

The effects of temperature on full scale span and offset are

very small and are shown under Operating Characteristics.

Absolute

Die

Differential/Gauge

Silicone Gel

Stainless Steel

Metal Cover

Silicone Gel

Die Coat

Die

Stainless Steel

Metal Cover

Die Coat

Epoxy

Case

Epoxy

Case

Wire Bond

Lead Frame

Bond

Die

Lead Frame

Differential/Gauge Element

Die

Bond

Absolute Element

Figure 3. Cross Sectional Diagram (not to scale)

Figure 3 illustrates the differential/gauge die in the basic

chip carrier (Case 344). 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 MPX2200 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.

Least

Square

Deviation

Least Squares Fit

Exaggerated

Performance

Curve

Straight Line

Deviation

LINEARITY

End Point Straight

Line Fit

Linearity refers to how well a transducer's output follows

the equation: V_OUT= V_OFF+ 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.

Offset

100

Pressure (% Full Scale)

Figure 4. Linearity Specification Comparison

MPX2200

Sensors

Freescale Semiconductor

1 2 345 6 7 8

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