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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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Integrated Silicon Pressure Sensor for Manifold Absolute Pressure Applications On-Chip Signal Conditioned, Temperature Compensated and Calibrated
The Motorola MPX4105A series Manifold Absolute Pressure (MAP) sensor for 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. Motorola's MAP sensor integrates on-chip, bipolar op amp circuitry and thin film resistor networks to provide a high output signal and temperature compensation. The small form factor and high reliability of on-chip integration make the Motorola MAP sensor a logical and economical choice for the automotive system designer. The MPX4105A series piezoresistive transducer is a state-of-the-art, monolithic, signal conditioned, silicon pressure sensor. This sensor combines advanced micromachining techniques, thin film metallization, and bipolar semiconductor processing to provide an accurate, high level analog output signal that is proportional to applied pressure. Figure 1 shows a block diagram of the internal circuitry integrated on a pressure sensor chip. Features * 1.8% Maximum Error Over 0 to 85C * Specifically Designed for Intake Manifold Absolute Pressure Sensing in Engine Control Systems * Temperature Compensated Over -40 to +125C * Durable Epoxy Unibody Element Application Examples * Manifold Sensing for Automotive Systems * Ideally Suited for Microprocessor or Microcontroller-Based Systems * Also Ideal for Non-Automotive Applications
MPX4105A SERIES
INTEGRATED PRESSURE SENSOR 15 to 105 kPa (2.2 to 15.2 psi) 0.3 to 4.9 V Output
UNIBODY PACKAGE
MPX4105A CASE 867
PIN NUMBER
1 2 3 Vout Gnd VS 4 5 6 N/C N/C 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.
VS
SENSING ELEMENT
THIN FILM TEMPERATURE COMPENSATION AND GAIN STAGE #1
GAIN STAGE #2 AND GROUND REFERENCE SHIFT CIRCUITRY
Vout
GND
PINS 4, 5 AND 6 ARE NO CONNECTS FOR UNIBODY DEVICE
Figure 1. Fully Integrated Pressure Sensor Schematic
REV 4
Motorola Sensor (c) Motorola, Inc. 2001 Device Data
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MPX4105A SERIES
MAXIMUM RATINGS(NOTE)
Parametrics Maximum Pressure (P1 u P2) Storage Temperature Operating Temperature Symbol Pmax Tstg TA Value 400 -40 to +125 -40 to +125 Units kPa C C
NOTE: Exposure beyond the specified limits may cause permanent damage or degradation to the device.
OPERATING CHARACTERISTICS (VS = 5.1 Vdc, TA = 25C unless otherwise noted. Decoupling circuit shown in Figure 3 required to
meet specification.) Characteristic Pressure Range Supply Voltage(1) Supply Current Minimum Pressure Full Scale Full Scale Offset(2) (0 to 85C) (0 to 85C) (0 to 85C) (0 to 85C) Symbol POP VS Io Voff VFSO VFSS -- V/P Time(6) tR Io+ -- -- Min 15 4.85 -- 0.184 4.804 -- -- -- -- -- -- -- Typ -- 5.1 7.0 0.306 4.896 4.590 -- 51 1.0 0.1 15 0.65 Max 105 5.35 10 0.428 4.988 -- 1.8 -- -- -- -- -- Unit kPa Vdc mAdc Vdc Vdc Vdc %VFSS mV/kPa ms mAdc ms %VFSS
Output(3) Span(4)
Accuracy(5) Sensitivity Response
Output Source Current at Full Scale Output Warm-up Offset Time(7)
Stability(8)
NOTES: 1. Device is ratiometric within this specified excitation range. 2. Offset (Voff) is defined as the output voltage at the minimum rated pressure. 3. Full Scale Output (VFSO) is defined as the output voltage at the maximum or full rated pressure. 4. 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. 5. Accuracy is the deviation in actual output from nominal output over the entire pressure range and temperature range as a percent of span at 25C due to all sources of error including 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 minimum specified pressure applied. * Pressure Hysteresis: Output deviation at any pressure within the specified range, when this pressure is cycled to and from minimum or maximum rated pressure at 25C. * TcSpan: Span deviation per C over the temperature range of 0 to 85C, as a percent of span at 25C. * TcOffset: Output deviation per C with minimum pressure applied, over the temperature range of 0 to 85C. 6. 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. 7. Warm-up Time is defined as the time required for the product to meet the specified output voltage. 8. Offset Stability is the product's output deviation when subjected to 1000 hours of Pulsed Pressure, Temperature Cycling with Bias Test.
MECHANICAL CHARACTERISTICS
Characteristics Weight, Basic Element (Case 867) Typ 4.0 Unit grams
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Motorola Sensor Device Data
MPX4105A SERIES
FLUORO SILICONE GEL DIE COAT DIE P1 WIRE BOND STAINLESS STEEL CAP
+5 V
EPOXY PLASTIC CASE Vout Vs IPS 1.0 mF 0.01 mF GND 470 pF OUTPUT
ABSOLUTE ELEMENT P2 SEALED VACUUM REFERENCE
LEAD FRAME
Figure 2 illustrates an 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 MPX4105A series pressure sensor operating characteristics, internal reliability and qualification tests are based on use of dry air as the pressure media. Media other than dry air may
OUTPUT (Volts)
Figure 4 shows the sensor output signal relative to pressure input. Typical minimum and maximum output curves are shown for operation over a temperature range of 0 to
Motorola Sensor Device Data
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 Pressure (ref: to sealed vacuum) in kPa
EEEEEEEEEEE EEEEEEEEEEE EEEEEEEEEEE EEEEEEEEEEE
Figure 2. Cross-Sectional Diagram (not to scale)
5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0
DIE BOND
Figure 3. Recommended power supply decoupling and output filtering. For additional output filtering, please refer to Application Note AN1646.
have adverse effects on sensor performance and long-term reliability. Contact the factory for information regarding media compatibility in your application. Figure 3 shows the recommended decoupling circuit for interfacing the output of the integrated sensor to the A/D input of a microprocessor or microcontroller. Proper decoupling of the power supply is recommended.
TRANSFER FUNCTION: Vout = Vs* (0.01*P-0.09) Error VS = 5.1 Vdc TEMP = 0 to 85C 15 kPA TO 105 kPA MPX4105A
MAX TYP
MIN
Figure 4. Output versus Absolute Pressure
85C. The output will saturate outside of the specified pressure range.
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MPX4105A SERIES
Transfer Function (MPX4105A)
Nominal Transfer Value: Vout = VS (P x 0.01 - 0.09) +/- (Pressure Error x Temp. Factor x 0.01 x VS) VS = 5.1 V 0.25 Vdc
Temperature Error Band
4.0 3.0 Temperature Error Factor 2.0 1.0 0.0
MPX4105A Series
Break Points Temp - 40 - 20 0 to 85 125 Multiplier 3.0 1.5 1.0 2.5
-40
-20
0
20
40
60
80
100
120
140
Temperature in C
NOTE: The Temperature Multiplier is a linear response from -40C to -20C, -20C to 0C, and from 85C to 125C
Pressure Error Band
3.0 Pressure Error (kPa) 2.0 1.0 0.0 -1.0 - 2.0 - 3.0 20 40 60 80 100 120 Pressure (in kPa) Error Limits for Pressure
Pressure 40 to 94 (kPa) 15 (kPa) 105 (kPa)
Error (Max) 1.5 (kPa) 2.4 (kPa) 1.8 (kPa)
ORDERING INFORMATION -- UNIBODY PACKAGE
Device Type Basic Element Options Absolute Element Absolute, 867 Case No. No MPX Series Order No No. MPX4105A Marking MPX4105A
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Motorola Sensor Device Data
MPX4105A SERIES UNIBODY PACKAGE DIMENSIONS
C R M B -A- N
PIN 1 SEATING PLANE
1 2 3 4 5 6
POSITIVE PRESSURE (P1)
NOTES: 9. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 10. CONTROLLING DIMENSION: INCH. 11. DIMENSION -A- IS INCLUSIVE OF THE MOLD STOP RING. MOLD STOP RING NOT TO EXCEED 16.00 (0.630). DIM A B C D F G J L M N R S OPEN GROUND +VOUT +VSUPPLY -VOUT OPEN 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 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
L
-T- G F D 6 PL 0.136 (0.005)
M
J S
TA
M
STYLE 1: PIN 1. 2. 3. 4. 5. 6.
VOUT GROUND VCC V1 V2 VEX
STYLE 2: PIN 1. 2. 3. 4. 5. 6.
OPEN GROUND -VOUT VSUPPLY +VOUT OPEN
STYLE 3: PIN 1. 2. 3. 4. 5. 6.
CASE 867-08 ISSUE N
BASIC ELEMENT
Motorola Sensor Device Data
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MPX4105A SERIES
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" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that 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.
How to reach us: USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1-303-675-2140 or 1-800-441-2447 Technical Information Center: 1-800-521-6274
JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1, Minami-Azabu. Minato-ku, Tokyo 106-8573 Japan. 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2, Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852-26668334
HOME PAGE: http://www.motorola.com/semiconductors/
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Motorola Sensor Device Data
MPX4105A/D

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