MPX53DP Freescale Semiconductor, MPX53DP Datasheet - Page 4

• Manufacturer Part Number: MPX53DP
• Description: SENSOR DIFF PRESS 7.25PSI MAX
• Manufacturer: Freescale Semiconductor
• Series: MPX53r
• Type: Differentialr

Specifications of MPX53DP

• Pressure Type: Differential
• Operating Pressure: 7.25 PSI
• Port Size: Male, 0.194" (4.9276mm) Tube
• Output: 0 ~ 60mV
• Voltage - Supply: 6V
• Termination Style: PCB
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 4-SIP, Dual Port
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 3 V
• Pressure Range: 0 to 50KPa
• Overload Pressure (max): 175KPa
• Mounting: Through Hole
• Pin Count: 4
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Package Type: Case 344C-01
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 6V
• Operating Pressure Range: 0 To 50kPa
• Connection Size: 4.928mm
• Sensitivity, V/p: 1.2mV/kPa
• Supply Current: 6mA
• Sensor Case Style: SIP
• No. Of Pins: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MPX53
4
Temperature Compensation
MPX53 series over temperature.
semiconductor device which gives an electrical output signal
proportional to the pressure applied to the device. This device
uses a unique transverse voltage diffused semiconductor
strain gauge which is sensitive to stresses produced in a thin
silicon diaphragm by the applied pressure.
diaphragm, there are no temperature effects due to
differences in the thermal expansion of the strain gauge and
the diaphragm, as are often encountered in bonded strain
gauge pressure sensors. However, the properties of the
strain gauge itself are temperature dependent, requiring that
the device be temperature compensated if it is to be used
over an extensive temperature range.
achieved rather simply with additional resistive components, or
by designing your system using the MPX2053 series sensors.
compensation over –40 to +125°C and 0 to +80°C are
presented in Freescale Application Note, AN840.
Figure 2
The piezoresistive pressure sensor element is a
Because this strain gauge is an integral part of the silicon
Temperature compensation and offset calibration can be
Several approaches to external temperature
Pressure
90
80
70
60
50
40
30
20
10
Figure 3. Linearity Specification Comparison
0
0
Actual
shows the typical output characteristics of the
Pressure (kPa)
Linearity
Theoretical
PSI
kPa
100
90
80
70
60
50
40
30
20
10
0
0
0
Figure 2. Output vs. Pressure Differential
V
S
P1 > P2
MPX53
1
= 3 Vdc
MAX
10
(V
(V
Offset
Span
FSS
OFF
2
P
)
)
OP
20
3
Pressure Differential
–40°C
4
Lead Frame
30
Wire Bond
the equation: V
pressure range (see
for calculating nonlinearity: (1) end point straight line fit 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.
(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.
the unibody 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.
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. Refer to application
note AN3728, for more information regarding media
compatibility.
Figure 4. Unibody Package — Cross-Sectional Diagram
5
Linearity refers to how well a transducer's output follows
Conversely, an end point fit will give the “worst case” error
Figure 4
The MPX53 series pressure sensor operating
+25°C
40
+125ºC
6
illustrates the differential or gauge configuration in
Die Coat
Silicone
7
50
out
8
= V
Range
Span
(Typ)
Offset
(Typ)
Figure
off
Die
(Not to Scale)
+ (sensitivity x P) over the operating
LINEARITY
P1
P2
3). There are two basic methods
Freescale Semiconductor
Stainless Steel
Metal Cover
RTV Die
Bond
Epoxy
Case
Sensors