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MPX4250A
Sensors
Freescale Semiconductor
3
Table 2. Operating Characteristics
(V
S
= 5.1 V
DC
, T
A
= 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.
2. Device is ratiometric within this specified excitation range.
3. Offset (V
OFF
) is defined as the output voltage at the minimum rated pressure.
4. Full Scale Output (V
FSO
) is defined as the output voltage at the maximum or full rated pressure.
5. Full Scale Span (V
FSS
) 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 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.
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.
8. Warm-up Time is defined as the time required for the product to meet the specified output voltage after the pressure is stabilized.
9. Offset stability is the product’s output deviation when subjected to 1000 hours of Pulsed Pressure, Temperature Cycling with Bias Test.
P
OP
20
—
250
kPa
Supply Voltage
(2)
V
S
4.85
5.1
5.35
V
DC
Supply Current
I
O
—
7.0
10
mAdc
Minimum Pressure Offset
(3)
@ V
S
= 5.1 Volts
(0 to 85°C)
V
OFF
0.133
0.204
0.264
V
DC
Full Scale Output
(4)
@ V
S
= 5.1 Volts
(0 to 85°C)
V
FSO
4.826
4.896
4.966
V
DC
Full Scale Span
(5)
@ V
S
= 5.1 Volts
(0 to 85°C)
V
FSS
—
4.692
—
V
DC
Accuracy
(6)
(0 to 85°C)
—
—
—
±1.5
%V
FSS
Sensitivity
V/
Ρ
—
20
—
mV/kPa
Response Time
(7)
t
R
—
1.0
—
msec
Output Source Current at Full Scale Output
I
O
+
—
0.1
—
mAdc
Warm-Up Time
(8)
—
—
20
—
msec
Offset Stability
(9)
—
—
±0.5
—
%V
FSS
Table 3. Mechanical Characteristics
Characteristics
Typ
Unit
Weight, Basic Element (Case 867)
4.0
Grams
Weight, Small Outline Package (Case 482)
1.5
Grams