MOTOROLA MPX4250ASX

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by MPX4250/D
SEMICONDUCTOR TECHNICAL DATA
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INTEGRATED
PRESSURE SENSOR
20 to 250 kPa (2.9 to 36.3 psi)
0.2 to 4.9 V OUTPUT
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The Motorola MPX4250 series Manifold Absolute Pressure (MAP) sensor for turbo
boost engine control is designed to sense absolute air pressure within the intake
manifold. This measurement can be used to compute the amount of fuel required for
each cylinder.
The MPX4250 series sensor integrates on–chip, bipolar op amp circuitry and thin film
resistor networks to provide a high level analog output signal and temperature
compensation. The small form factor and reliability of on–chip integration make the
Motorola MAP sensor a logical and economical choice for automotive system designers.
BASIC CHIP
CARRIER ELEMENT
CASE 867–08, STYLE 1
Features
• 1.5% Maximum Error Over 0° to 85°C
• Specifically Designed for Intake Manifold Absolute Pressure Sensing in Engine
Control Systems
• Ideally Suited for Direct Microprocessor Interfacing
• Patented Silicon Shear Stress Strain Gauge
• Temperature Compensated Over – 40° to +125°C
• Offers Reduction in Weight and Volume Compared to Existing Hybrid Modules
• Durable Epoxy Unibody Element
• Ideal for Non–Automotive Applications
PORT OPTION
CASE 867B–04, STYLE 1
Application Examples
• Manifold Sensing for Automotive Systems
PIN NUMBER
VS
3
THIN FILM
TEMPERATURE
COMPENSATION
AND
GAIN STAGE #1
X–ducer
SENSING
ELEMENT
2
GAIN STAGE #2
AND
GROUND
REFERENCE
SHIFT CIRCUITRY
1
Vout
1
Vout
4
N/C
2
Gnd
5
N/C
3
VS
6
N/C
NOTE: Pins 4, 5, and 6 are internal
device connections. Do not connect
to external circuitry or ground. Pin 1
is noted by the notch in the Lead.
PINS 4, 5 AND 6 ARE NO CONNECTS
GND
Figure 1. Fully Integrated Pressure Sensor Schematic
Senseon and X–ducer are trademarks of Motorola, Inc.
REV 2
Motorola Sensor Device Data
 Motorola, Inc. 1997
1
MAXIMUM RATINGS(1)
Symbol
Value
Unit
Overpressure(2) (P1 > P2)
Parametrics
Pmax
400
kPa
Burst Pressure(2) (P1 > P2)
Pburst
1000
kPa
Tstg
– 40 to +125
°C
TA
– 40 to +125
°C
Storage Temperature
Operating Temperature
1. TC = 25°C unless otherwise noted.
2. Exposure beyond the specified limits may cause permanent damage or degradation to the device.
OPERATING CHARACTERISTICS (VS = 5.1 Vdc, TA = 25°C unless otherwise noted, P1 > P2)
Symbol
Min
Typ
Max
Unit
Pressure Range(1)
Characteristic
POP
20
—
250
kPa
Supply Voltage(2)
VS
4.85
5.1
5.35
Vdc
Supply Current
Io
—
7.0
10
mAdc
Minimum Pressure Offset(3)
@ VS = 5.1 Volts
(0 to 85°C)
VFSS
4.622
4.692
4.762
Vdc
Full Scale Output(4)
@ VS = 5.1 Volts
(0 to 85°C)
VFSS
4.622
4.692
4.762
Vdc
Full Scale Span(5)
@ VS = 5.1 Volts
(0 to 85°C)
VFSS
4.622
4.692
4.762
Vdc
Accuracy(6)
(0 to 85°C)
—
—
—
±1.5
%VFSS
mV/kPa
∆V/∆P
—
20
—
Response Time(7)
tR
—
1.0
—
ms
Output Source Current at Full Scale Output
lo+
—
0.1
—
mAdc
Warm–Up Time(8)
—
—
20
—
ms
Offset Stability(9)
—
—
± 0.5
—
%VFSS
Symbol
Min
Typ
Max
Unit
Weight, Basic Element (Case 867)
—
—
4.0
—
Grams
Common Mode Line Pressure(10)
—
—
—
690
kPa
Sensitivity
Decoupling circuit shown in Figure 3 required to meet electrical specifications.
MECHANICAL CHARACTERISTICS
Characteristics
NOTES:
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 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.
10. Common mode pressures beyond what is specified may result in leakage at the case–to–lead interface.
2
Motorola Sensor Device Data
SILICONE
DIE COAT
STAINLESS STEEL
METAL COVER
DIE
MPX4250A
OUPUT
(PIN 1)
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
P1
EPOXY
CASE
WIRE BOND
A/D
50 pF
51 k
µ PROCESSOR
RTV DIE
BOND
LEAD FRAME
P2
SEALED VACUUM REFERENCE
Figure 2. Cross–Sectional Diagram
(Not to Scale)
Figure 3. Typical Decoupling Filter for Sensor to
Microprocessor Interface
Figure 2 illustrates the absolute sensing chip in the basic
chip carrier (Case 867). A fluorosilicone gel isolates the die
surface and wire bonds from the environment, while allowing
the pressure signal to be transmitted to the sensor diaphragm. The MPX4250A 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 in-
formation regarding media compatibility in your application.
Figure 3 shows a typical decoupling circuit for interfacing
the integrated MAP sensor to the A/D input of a microprocessor. Proper decoupling of the power supply is recommended.
Figure 4 shows the sensor output signal relative to pressure input. Typical, minimum, and maximum output curves
are shown for operation over temperature range of 0° to
85°C. (The output will saturate outside of the specified pressure range.)
5.0
4.5
OUTPUT (Volts)
4.0
3.5
TRANSFER FUNCTION:
Vout = VS* (0.004 x P–0.04) ± Error
VS = 5.1 Vdc
TEMP = 0 to 85°C
MAX
TYP
3.0
2.5
2.0
1.5
MIN
1.0
0.5
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
0
PRESSURE (ref: to sealed vacuum) in kPa
Figure 4. Output versus Absolute Pressure
Motorola Sensor Device Data
3
Transfer Function
Nominal Transfer Value: Vout = VS (P x 0.004 – 0.04)
Nominal Transfer Value: +/– (Pressure Error x Temp. Factor x 0.004 x VS)
Nominal Transfer Value: VS = 5.1 V ± 0.25 Vdc
Temperature Error Band
MPX4250A Series
4.0
3.0
Temperature
Error
Factor
2.0
Temp
Multiplier
– 40
0 to 85
+125
3
1
3
1.0
0.0
–40
–20
0
20
40
60
80
100
120
140
Temperature in C°
NOTE: The Temperature Multiplier is a linear response from 0° to –40°C and from 85° to 125°C.
Pressure Error Band
9.0
Pressure Error (kPa)
6.0
3.0
25
50
75 100 125 150 175 200 225 250
Pressure in kPa
–3.0
– 6.0
– 9.0
Pressure
Error (Max)
20 to 250 kPa
± 3.45 (kPa)
ORDERING INFORMATION
The MPX4250A series Turbo MAP silicon pressure sensors are available in the basic element package or with pressure port
fittings that provide mounting ease and barbed hose connections.
Device Type
Basic Element
Ported Elements
4
Options
Case No.
MPX Series Order No.
Marking
Absolute, Element
Case 867–08
MPX4250A
MPX4250A
Absolute, Ported
Case 867B–04
MPX4250AP
MPX4250AP
Absolute, Stove Pipe Port
Case 867E–03
MPX4250AS
MPX4250A
Absolute, Axial Port
Case 867F–03
MPX4250ASX
MPX4250A
Motorola Sensor Device Data
PACKAGE DIMENSIONS
C
R
M
B
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION –A– IS INCLUSIVE OF THE MOLD
STOP RING. MOLD STOP RING NOT TO EXCEED
16.00 (0.630).
POSITIVE PRESSURE
(P1)
–A–
N
PIN 1
SEATING
PLANE
1
2
3
4
5
DIM
A
B
C
D
F
G
J
L
M
N
R
S
L
6
–T–
G
J
S
F
D 6 PL
0.136 (0.005)
M
T A
M
INCHES
MIN
MAX
0.595
0.630
0.514
0.534
0.200
0.220
0.027
0.033
0.048
0.064
0.100 BSC
0.014
0.016
0.695
0.725
30 _NOM
0.475
0.495
0.430
0.450
0.090
0.105
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
CASE 867–08
ISSUE N
MILLIMETERS
MIN
MAX
15.11
16.00
13.06
13.56
5.08
5.59
0.68
0.84
1.22
1.63
2.54 BSC
0.36
0.40
17.65
18.42
30 _NOM
12.07
12.57
10.92
11.43
2.29
2.66
VOUT
GROUND
VCC
V1
V2
VEX
BASIC ELEMENT (D)
–T–
A
U
L
SEATING
PLANE
R
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
PORT #1
POSITIVE
PRESSURE (P1)
V
DIM
A
B
C
D
F
G
J
K
L
N
P
Q
R
S
U
V
–Q–
N
B
K
1
PIN 1
–P–
C
J
0.25 (0.010)
M
T Q
3
4
5
6
S
G
M
2
F
D 6 PL
0.13 (0.005)
M
T P
CASE 867B–04
ISSUE E
S
Q
S
INCHES
MIN
MAX
1.145
1.175
0.685
0.715
0.305
0.325
0.027
0.033
0.048
0.064
0.100 BSC
0.014
0.016
0.695
0.725
0.290
0.300
0.420
0.440
0.153
0.159
0.153
0.159
0.230
0.250
0.220
0.240
0.910 BSC
0.182
0.194
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
MILLIMETERS
MIN
MAX
29.08
29.85
17.40
18.16
7.75
8.26
0.68
0.84
1.22
1.63
2.54 BSC
0.36
0.41
17.65
18.42
7.37
7.62
10.67
11.18
3.89
4.04
3.89
4.04
5.84
6.35
5.59
6.10
23.11 BSC
4.62
4.93
VOUT
GROUND
VCC
V1
V2
VEX
PRESSURE SIDE PORTED (AP)
Motorola Sensor Device Data
5
PACKAGE DIMENSIONS – continued
C
–B–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
A
DIM
A
B
C
D
E
F
G
J
K
N
S
V
V
PIN 1
PORT #1
POSITIVE
PRESSURE
(P1)
6
K
4
3
2
1
S
J
N
5
G
F
E
D
–T–
6 PL
0.13 (0.005)
M
T B
M
CASE 867E–03
ISSUE D
INCHES
MIN
MAX
0.690
0.720
0.245
0.255
0.780
0.820
0.027
0.033
0.178
0.186
0.048
0.064
0.100 BSC
0.014
0.016
0.345
0.375
0.300
0.310
0.220
0.240
0.182
0.194
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
MILLIMETERS
MIN
MAX
17.53
18.28
6.22
6.48
19.81
20.82
0.69
0.84
4.52
4.72
1.22
1.63
2.54 BSC
0.36
0.41
8.76
9.53
7.62
7.87
5.59
6.10
4.62
4.93
VOUT
GROUND
VCC
V1
V2
VEX
PRESSURE SIDE PORTED (AS)
–T–
C
A
U
E
–Q–
N
V
B
R
PIN 1
PORT #1
POSITIVE
PRESSURE
(P1)
–P–
0.25 (0.010)
M
T Q
6
M
5
4
3
2
1
S
K
J
0.13 (0.005)
M
T P
S
D 6 PL
Q S
G
F
CASE 867F–03
ISSUE D
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
DIM
A
B
C
D
E
F
G
J
K
N
P
Q
R
S
U
V
INCHES
MIN
MAX
1.080
1.120
0.740
0.760
0.630
0.650
0.027
0.033
0.160
0.180
0.048
0.064
0.100 BSC
0.014
0.016
0.220
0.240
0.070
0.080
0.150
0.160
0.150
0.160
0.440
0.460
0.695
0.725
0.840
0.860
0.182
0.194
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
MILLIMETERS
MIN
MAX
27.43
28.45
18.80
19.30
16.00
16.51
0.68
0.84
4.06
4.57
1.22
1.63
2.54 BSC
0.36
0.41
5.59
6.10
1.78
2.03
3.81
4.06
3.81
4.06
11.18
11.68
17.65
18.42
21.34
21.84
4.62
4.93
VOUT
GROUND
VCC
V1
V2
VEX
PRESSURE SIDE PORTED (ASX)
6
Motorola Sensor Device Data
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
Motorola Sensor Device Data
7
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Motorola Sensor DeviceMPX4250/D
Data