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Freescale Semiconductor Technical Data
Integrated Silicon Pressure Sensor Altimeter/Barometer Pressure Sensor On-Chip Signal Conditioned, Temperature Compensated and Calibrated
The MPX4115 series is designed to sense absolute air pressure in an altimeter or barometer (BAP) applications. Freescale's BAP 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 high reliability of on-chip integration makes the Freescale BAP sensor a logical and economical choice for application designers.
Features • 1.5% Maximum Error over 0° to 85° • Ideally suited for Microprocessor or Microcontroller-Based Systems • Available in Absolute, Differential and Gauge Configurations • Durable Epoxy Unibody Element • Easy-to-Use Chip Carrier Option
Typical Applications
• Altimeter • Baromete
ORDERING INFORMATION(1)
Device
Options
Case No.
MPX Series Order No.
Marking
Basic Element Absolute, Element Only
Case 867-08
MPX4115A MPX4115A
Ported Elements
Absolute, Ported
Absolute, Stove Pipe Port
Case 867B-04 Case 867E-03
MPX4115AP MPX4115AP MPX4115AS MPX4115A
Absolute, Axial Port
Case 867F-03 MPX4115ASX MPX4115A
1. The MPX4115A BAP Sensor is available in the Basic Element package or with pressure port fittings that provide mounting ease and barbed hose connections.
Document Number: MPX4115 Rev 5, 08/2006
MPX4115 SERIES
OPERATING OVERVIEW INTEGRATED
PRESSURE SENSOR 15 to 115kPa
(2.18 to 16.7 psi) 0.2 to 4.8 Volts Output
MPX4115A CASE 867-08
MPX4115AP CASE 867B-04
MPX4115AS CASE 867E-03
MPX4115ASX CASE 867F-03
© Freescale Semiconductor, Inc., 2006. All rights reserved.
PIN NUMBERS
1
VOUT(1)
4
2
GND
5
N/C(2) N/C(2)
3
VS
6
N/C(2)
1. Pin 1 is noted by the notch in the lead.
2. Pins 4, 5, and 6 are internal device connections. Pin 1 is noted by the notch in the Lead. Do not connect to external circuitry or ground.
VS
Sensing Element
Thin Film
Gain Stage #2
Temperature
and
Compensation
Ground
VOUT
and
Reference
Gain Stage #1
Shift Circuitry
Pins 4, 5, and 6 are NO CONNECTS GND
Figure 1. Integrated Pressure Sensor Schematic
Table 1. Maximum Ratings(1)
Parametrics
Symbol
Value
Unit
Overpressure(2) (P1 > P2)
Pmax
400
kPa
Burst Pressure(2) (P1 > P2)
Pburst
1000
kPa
Storage Temperature
Tstg
-40° to +125°
°C
Operating Temperature
TA
-40° to +125°
°C
1. TC = 25°C unless otherwise noted. 2. Exposure beyond the specified limits may cause permanent damage or degradation to the device.
MPX4115 SERIES 2
Sensors Freescale Semiconductor
Table 2. 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 Pressure Range(1) Supply Voltage(2) Supply Current Minimum Pressure Offset(3) @ VS = 5.1 Volts
Full Scale Output(4)
@ VS = 5.1 Volts
Full Scale Span(5)
@ VS = 5.1 Volts Accuracy(6) Sensitivity Response Time(7) Output Source Current at Full Scale Output Warm-Up Time(8) Offset Stability(9)
(0 to 85°C) (0 to 85°C) (0 to 85°C) (0 to 85°C)
Symbol POP VS Io Voff
VFSO
VFSS
— V/P tR lo+ — —
Min 15 4.85 — 0.135
4.725
—
— — — — — —
Typ -
5.1 7.0 0.204
4.794
4.59
— 46 1.0 0.1 20 ± 0.5
Max 115 5.35 10 0.273
4.863
—
± 1.5 — — — — —
Unit kPa Vdc mAdc Vdc
Vdc
Vdc
%VFSS mV/kPa
ms mAdc mSec %VFSS
1. 1.0kPa (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, using end point method, 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 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 .