Pressure Freescale Semiconductor + MPX4105A Rev 8, 1/2009 Integrated Silicon Pressure Sensor for Manifold Absolute Pressure, Applications, On-Chip Signal Conditioned, Temperature Compensated and Calibrated MPX4105A Series 15 to 105 kPa (2.2 to 15.2 psi) 0.3 to 4.9 V Output The Freescale 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. Freescale’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 Freescale 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. • Features • 1.8% Maximum Error Over 0° to 85°C • Specifically Designed for Intake Manifold Absolute Pressure Sensing in Engine Control Systems • Temperature Compensated Over –40 to +125°C • 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 ORDERING INFORMATION Package Case Device Name Options No. Unibody Package (MPX4105A Series) MPX4105A 867 None # of Ports Single Dual • Gauge Pressure Type Differential Absolute • UNIBODY PACKAGE MPX4105A CASE 867-08 © Freescale Semiconductor, Inc., 2005, 2009. All rights reserved. Device Marking MPX4105A Pressure Operating Characteristics Table 1. 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 Unit POP 15 — 105 kPa Supply Voltage(2) VS 4.85 5.1 5.35 Vdc Supply Current Io — 7.0 10 mAdc (0 to 85°C) Voff 0.184 0.306 0.428 Vdc (0 to 85°C) VFSO 4.804 4.896 4.988 Vdc (0 to 85°C) VFSS — 4.590 — Vdc (0 to 85°C) — — — ±1.8 %VFSS ΔV/ΔP — 51 — mV/kPa tR — 1.0 — ms Io+ — 0.1 — mAdc — — 15 — ms — — ±0.65 — %VFSS Pressure Range (1) Minimum Pressure Offset(3) Full Scale Output Full Scale Span Accuracy (4) (5) (6) Sensitivity Response Time (7) Output Source Current at Full Scale Output Warm-Up Time (8) (9) Offset Stability 1. 2. 3. 4. 5. 6. 7. 8. 9. 1.0 kPa (kiloPascal) equals 0.145 psi. Device is ratiometric within this specified excitation range. Offset (Voff) is defined as the output voltage at the minimum rated pressure. Full Scale Output (VFSO) is defined as the output voltage at the maximum or full rated pressure. 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. 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. 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. Warm-up Time is defined as the time required for the product to meet the specified output voltage after the Pressure has been stabilized. Offset Stability is the product's output deviation when subjected to 1000 hours of Pulsed Pressure, Temperature Cycling with Bias Test. MPX4105A 2 Sensors Freescale Semiconductor Pressure Maximum Ratings Table 2. Maximum Ratings(1) Rating Symbol Value Unit Maximum Pressure (P1 > P2) PMAX 400 kPa Storage Temperature TSTG -40 to +125 °C TA -40 to +125 °C Operating Temperature 1. Exposure beyond the specified limits may cause permanent damage or degradation to the device. Figure 1 shows a block diagram of the internal circuitry integrated on a pressure sensor chip. VS 3 Thin Film Temperature Compensation and Gain Stage #1 Sensing Element Gain Stage #2 and Ground Reference Shift Circuitry Vout 1 Pins 4, 5, and 6 are NO CONNECTS GND 2 Figure 1. Fully Integrated Pressure Sensor Schematic MPX4105A Sensors Freescale Semiconductor 3 Pressure On-chip Temperature Compensation and Calibration 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 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. 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 85°C. The output will saturate outside of the specified pressure range. Fluoro Silicone Gel Die Coat Stainless Steel Cap Die P1 Wire Bond Epoxy Plastic Case Die Bond Lead Frame Absolute Element P2 Sealed Vacuum Reference Figure 2. Cross Sectional Diagram (not to scale) +5 V Output Vout Vs IPS 1.0 μF 0.01 μF GND 470 pF Figure 3. Recommended Power Supply Decoupling and Output Filtering 5.0 4.5 Output (Volts) 4.0 3.5 3.0 2.5 2.0 1.5 Transfer Function: Vout = Vs* (0.01*P-0.09) ± Error VS = 5.1 Vdc Temperature = 0 to 85°C 15 kPa to 105 kPa MPX4105A TYP MAX MIN 1.0 0.5 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 0 Pressure (ref: to sealed vacuum) in kPa Figure 4. Output versus Absolute Pressure MPX4105A 4 Sensors Freescale Semiconductor Pressure 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 MPX4105A Series 4.0 Break Points Temp 3.0 Temperature Error Factor Multiplier –40 –20 0 to 85 125 2.0 3.0 1.5 1.0 2.5 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 –40°C to –20°C, –20°C to 0°C, and from 85°C to 125°C. Pressure Error Band Error Limits for Pressure 3.0 Pressure Error (kPa) 2.0 1.0 0.0 –1.0 20 40 60 80 100 120 Pressure (in kPa) –2.0 –3.0 Pressure 40 to 94 (kPa) 15 (kPa) 105 (kPa) Error (Max) ±1.5 (kPa) ±2.4 (kPa) ±1.8 (kPa) MPX4105A Sensors Freescale Semiconductor 5 Pressure PACKAGE DIMENSIONS C R POSITIVE PRESSURE (P1) M B -AN PIN 1 SEATING PLANE 1 2 3 4 5 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). DIM A B C D F G J L M N R S L 6 -TG J S F D 6 PL 0.136 (0.005) 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 M T A M STYLE 3: PIN 1. 2. 3. 4. 5. 6. INCHES MILLIMETERS MAX MIN MAX MIN 16.00 0.595 0.630 15.11 13.56 0.514 0.534 13.06 5.59 0.200 0.220 5.08 0.84 0.027 0.033 0.68 1.63 0.048 0.064 1.22 0.100 BSC 2.54 BSC 0.40 0.014 0.016 0.36 18.42 0.695 0.725 17.65 30˚ NOM 30˚ NOM 12.57 0.475 0.495 12.07 11.43 0.430 0.450 10.92 0.090 0.105 2.29 2.66 OPEN GROUND +VOUT +VSUPPLY -VOUT OPEN CASE 867-08 ISSUE N UNIBODY PACKAGE MPX4105A 6 Sensors Freescale Semiconductor How to Reach Us: Home Page: www.freescale.com Web Support: http://www.freescale.com/support USA/Europe or Locations Not Listed: Freescale Semiconductor, Inc. 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