MPX4250D 데이터 시트보기 (PDF) - Freescale Semiconductor

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MPX4250D

INTEGRATED PRESSURE SENSOR 0 TO 250 kPA (0 TO 36.3 psi) 0.2 TO 4.9 V OUTPUT

Freescale Semiconductor 

Table 2. Operating Characteristics (VS = 5.1 Vdc, TA = 25°C unless otherwise noted, P1 > P2.

Decoupling circuit shown in Figure 3 required to meet electrical specifications.)

Pressure Range(1)

Supply Voltage(2)

Characteristic

Supply Current

Minimum Pressure Offset @ VS = 5.1 Volts(3)

Full Scale Output @ VS = 5.1 Volts(4)

Full Scale Span @ VS = 5.1 Volts(5)

Accuracy(6)

Sensitivity

Response Time(7)

Output Source Current at Full Scale Output

Warm-Up Time(8)

Offset Stability(9)

(0 to 85°C)

(0 to 85°C)

(0 to 85°C)

(0 to 85°C)

Symbol

POP

VS

Io

Voff

VFSO

VFSS

—

∆V/∆P

tR

Io+

—

—

Min

0

4.85

—

0.139

4.844

—

—

—

—

—

—

—

Typ

—

5.1

7.0

0.204

4.909

4.705

—

18.8

1.0

0.1

20

± 0.5

Max

250

5.35

10

0.269

4.974

—

±1.4

—-

—-

—-

—-

—-

Unit

kPa

Vdc

mAdc

Vdc

Vdc

Vdc

%VFSS

mV/kPa

ms

mAdc

ms

%VFSS

1. 1.0 kPa (kiloPascal) equals 0.145 psi.

2. Device is ratiometric within this specified excitation range.

3. Offset (Voff) is defined as the output voltage at the minimum rated pressure.

4. Full Scale Output (VFSO) is defined as the output voltage at the maximum or full rated pressure.

5. Full Scale Span (VFSS) is defined as the algebraic difference between the output voltage at full rated pressure and the output voltage at the

minimum rated pressure.

6. Accuracy (error budget) consists of the following:

• Linearity:

Output deviation from a straight line relationship with pressure over the specified pressure range.

• Temperature Hysteresis: Output deviation at any temperature within the operating temperature range, after the temperature is cycled to

and from the minimum or maximum operating temperature points, with zero differential pressure applied.

• Pressure Hysteresis: Output deviation at any pressure within the specified range, when this pressure is cycled to and from the

minimum or maximum rated pressure, at 25°C.

• TcSpan:

Output deviation over the temperature range of 0 to 85°C, relative to 25°C.

• TcOffset:

Output deviation with minimum rated pressure applied, over the temperature range of 0 to 85°C, relative to 25°C.

• Variation from Nominal: The variation from nominal values, for Offset or Full Scale Span, as a percent of VFSS, at 25°C.

7. Response Time is defined as the time for the incremental change in the output to go from 10% to 90% of its final value when subjected to a

specified step change in pressure.

8. Warm-up Time is defined as the time required for the product to meet the specified output voltage after the Pressure has been stabilized.

9. Offset Stability is the product's output deviation when subjected to 1000 hours of Pulsed Pressure, Temperature Cycling with Bias Test.

Table 3. Mechanical Characteristics

Characteristics

Weight, Basic Element (Case 867)

Typ

Unit

4.0

grams

Sensors

Freescale Semiconductor

MPX4250D

3

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