MPX4250AP datasheet(3/12 Pages) FREESCALE

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MPX4250A

Sensors

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.)

Characteristic

Symbol

Min

Typ

Max

Units

Differential Pressure Range(1)

1. 1.0 kPa (kiloPascal) equals 0.145 psi.

POP

—

250

kPa

Supply Voltage(2)

2. Device is ratiometric within this specified excitation range.

4.85

5.1

5.35

VDC

Supply Current

—

7.0

mAdc

Minimum Pressure Offset(3)

(0 to 85°C)

@ VS = 5.1 Volts

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

VOFF

0.133

0.204

0.264

VDC

Full Scale Output(4)

(0 to 85°C)

@ VS = 5.1 Volts

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

VFSO

4.826

4.896

4.966

VDC

Full Scale Span(5)

(0 to 85°C)

@ VS = 5.1 Volts

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.

VFSS

—

4.692

—

VDC

Accuracy(6)

(0 to 85°C)

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

• Linearity:

Output deviation at any temperature 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.

—

±1.5

%VFSS

Sensitivity

∆V/∆Ρ

—

mV/kPa

Response Time(7)

7. Response Time is defined as the time form 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.

—

1.0

—

msec

Output Source Current at Full Scale Output

IO+

—

0.1

—

mAdc

Warm-Up Time(8)

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

—

msec

Offset Stability(9)

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

—

±0.5

—

%VFSS

Table 3. Mechanical Characteristics

Characteristics

Typ

Unit

Weight, Basic Element (Case 867)

4.0

Grams

Weight, Small Outline Package (Case 482)

1.5

Grams

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