Pressure MPX4250 Freescale Semiconductor Rev 7, 1/2009 + Integrated Silicon Pressure Sensor MPX4250 On-Chip Signal Conditioned, Series Temperature Compensated and 0 to 250 kPa (0 to 36.3 psi) Calibrated 0.2 to 4.9 V Output The MPX4250 series piezoresistive transducer is a state-of-the-art monolithic silicon pressure sensor designed for a wide range of applications, particularly those employing a microcontroller or microprocessor with A/D Application Examples inputs. This transducer combines advanced micromachining techniques, thin- film metallization, and bipolar processing to provide an accurate, high-level Ideally Suited for Microprocessor or analog output signal that is proportional to the applied pressure. The small Microcontroller-Based Systems form factor and high reliability of on-chip integration make the Freescale sensor a logical and economical choice for the automotive system engineer. Features Differential and Gauge Applications Available 1.4% Maximum Error Over 0 to 85C Patented Silicon Shear Stress Strain Gauge Temperature Compensated Over 40 to +125C Offers Reduction in Weight and Volume Compared to Existing Hybrid Modules Durable Epoxy Unibody Element ORDERING INFORMATION of Ports Pressure Type Package Case Device Name Device Marking Options No. None Single Dual Gauge Differential Absolute Unibody Package (MPX4250 Series) MPX4250D MPX4250D Tray 867 MPX4250GP MPX4250GP Tray 867B MPX4250DP MPX4250DP Tray 867C UNIBODY PACKAGES MPX4250D MPX4250GP MPX4250DP CASE 867 CASE 867B CASE 867C Freescale Semiconductor, Inc., 2006-2009. All rights reserved.Pressure Operating Characteristics Table 1. Operating Characteristics (V = 5.1 Vdc, T = 25C unless otherwise noted, P1 > P2. S A Decoupling circuit shown in Figure 3 required to meet electrical specifications.) Characteristic Symbol Min Typ Max Unit (1) Pressure Range P 0 250 kPa OP (2) Supply Voltage V 4.85 5.1 5.35 Vdc S Supply Current I 7.0 10 mAdc o (3) Minimum Pressure Offset V = 5.1 Volts (0 to 85 C) V 0.139 0.204 0.269 Vdc S off (4) Full Scale Output V = 5.1 Volts (0 to 85 C) V 4.844 4.909 4.974 Vdc S FSO (5) Full Scale Span V = 5.1 Volts (0 to 85 C) V 4.705 Vdc S FSS (6) Accuracy (0 to 85 C) 1.4 %V FSS Sensitivity V/ P 18.8 - mV/kPa (7) Response Time t 1.0 - ms R Output Source Current at Full Scale Output I 0.1 - mAdc o+ (8) 20 - ms Warm-Up Time (9) Offset Stability 0.5 - %V FSS 1. 1.0 kPa (kiloPascal) equals 0.145 psi. 2. Device is ratiometric within this specified excitation range. 3. Offset (V ) is defined as the output voltage at the minimum rated pressure. off 4. Full Scale Output (V ) is defined as the output voltage at the maximum or full rated pressure. FSO 5. Full Scale Span (V ) is defined as the algebraic difference between the output voltage at full rated pressure and the output voltage at the FSS 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 V , at 25C. FSS 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 Time 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. MPX4250 Sensors 2 Freescale Semiconductor