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NXP Semiconductors MPX4115AS
- Part No.:
- MPX4115AS
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 6-SIP Module
- Datasheet:
-
MPX4115AS.pdf
- Description:
- SENSOR 16.68PSIA 0.19" 4.8V
- Quantity:
- Payment:
- Shipping:
Inventory:2,089
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Product details
Overview
MPX4115AS from Freescale Semiconductor is an integrated silicon absolute pressure sensor designed for barometric and altimeter applications, delivering a ratiometric 0.2–4.8 V analog output over a 15–115 kPa range, with ±1.5% full-scale accuracy across 0°C to 85°C, and temperature-compensated operation from −40°C to +125°C.
For engineers reviewing the MPX4115AS datasheet, MPX4115AS pinout, MPX4115AS application, or MPX4115AS equivalent, this device is selected for precision atmospheric pressure sensing in aviation altimeters, weather stations, and engine control systems where stable offset, low hysteresis, and media-resistant packaging are critical.
Technical Context
The MPX4115AS integrates a piezoresistive silicon sensing element with on-chip bipolar op-amp circuitry and thin-film resistor networks to provide signal conditioning, temperature compensation, and factory calibration. Its sealed vacuum reference enables true absolute pressure measurement.
It operates ratiometrically with a 4.85–5.35 V supply, delivers 7.0 mA typical supply current, and achieves 1.0 ms response time (10%–90%). The transfer function is defined as VOUT = VS × (0.009 × P − 0.095), where P is pressure in kPa and VS is supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 15–115 kPa (2.2–16.7 psi): supports barometric pressure monitoring at sea level and aircraft altimetry up to ~11 km altitude. |
| Output Voltage | 0.2–4.8 V (ratiometric to VS): linear analog output directly interfaceable with 10-bit+ ADCs without external amplification. |
| Accuracy | ±1.5% of full-scale span (VFSS) over 0°C–85°C: includes linearity, temperature hysteresis, pressure hysteresis, TcSpan, and TcOffset contributions. |
| Supply Voltage | 4.85–5.35 V DC: compatible with standard 5 V microcontroller rails; ratiometric behavior minimizes supply-induced error. |
| Response Time | 1.0 ms (10%–90%): enables real-time pressure tracking in dynamic environments such as rapid ascent/descent profiles. |
| Operating Temp | −40°C to +125°C: qualified for under-hood automotive and industrial outdoor deployments without external thermal management. |
| Warm-Up Time | 20 ms: ensures stable output within one microcontroller instruction cycle after power-on, critical for fast-boot systems. |
Pinout & Package
MPX4115AS uses the unibody epoxy package (Case 867E-03) with stove-pipe port configuration. Pin 1 is VOUT, Pin 2 is GND, Pin 3 is VCC; Pins 4–6 are no-connects. The pressure side (P1) is identified by the attached port.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Analog output terminal; delivers conditioned, temperature-compensated voltage proportional to absolute pressure. |
| 2 | GND | Analog ground reference; must be connected to system AGND with low-impedance path to minimize noise coupling. |
| 3 | VCC | Positive supply input; requires 1.0 μF + 0.01 μF decoupling per Figure 3 to meet electrical specs. |
| 4, 5, 6 | No Connect | Internally unconnected; must remain floating-no PCB traces or soldering allowed. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip temperature compensation | Compensates offset and span drift across −40°C to +125°C using integrated thin-film resistor networks-eliminates need for external thermistor or software correction. |
| Media-resistant gel option | Fluorosilicone gel isolates die and wire bonds while transmitting pressure signal-enables reliable operation with dry air and select non-corrosive gases. |
| Dual-package form factor | Unibody (867E-03) provides robust mechanical stability and high reliability for vibration-prone environments like engine bays and avionics mounts. |
| Factory-calibrated transfer function | Delivers known linear relationship VOUT = VS × (0.009 × P − 0.095) - reduces firmware calibration effort and improves system-level repeatability. |
| Low-offset stability | ±0.5% VFSS offset shift after 1000-hour pulsed pressure/temperature cycling test-ensures long-term accuracy in deployed instrumentation. |
Applications
| Aviation Altimeter | Weather Station |
|---|---|
Use Scenario: Measuring ambient atmospheric pressure to compute altitude in general aviation aircraft and UAVs. IC Role / Device Role / Timing Role: Absolute pressure transducer providing primary altitude reference via calibrated analog voltage output. Use Value: Enables <15 m altitude resolution at sea level with minimal firmware overhead due to factory-trimmed linearity and built-in temperature compensation. |
Use Scenario: Real-time barometric pressure logging in ground-based meteorological stations and IoT environmental sensors. IC Role / Device Role / Timing Role: High-stability absolute pressure sensor feeding data to microcontroller ADC for trend analysis and forecast modeling. Use Value: Delivers ±1.5% full-scale accuracy over 0°C–85°C without recalibration-reducing field maintenance and improving long-term data consistency. |
| Engine Control Unit | Industrial Altitude Monitoring |
Use Scenario: Intake manifold absolute pressure (MAP) sensing in gasoline and diesel engine management systems. IC Role / Device Role / Timing Role: Primary pressure feedback element for fuel injection timing and air mass calculation. Use Value: With 1.0 ms response time and −40°C to +125°C operating range, supports transient load tracking and under-hood thermal resilience. |
Use Scenario: Elevation verification and terrain-relative positioning in mining equipment, survey drones, and construction machinery. IC Role / Device Role / Timing Role: Absolute pressure reference for GPS-denied altitude hold and vertical position stabilization. Use Value: Unibody epoxy package (Case 867E-03) withstands shock, vibration, and dust exposure-ensuring uptime in harsh outdoor industrial settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPX4115AP | Same die and transfer function, but uses ported (867B-04) package with different mechanical port orientation and mounting footprint. | Preferred where board space allows larger ported layout and direct hose/tube attachment is required instead of stove-pipe interface. | Select MPX4115AP when mechanical integration demands a side-port configuration rather than top-mounted stove-pipe port. |
| MPXAZ4115A6U | Uses small-outline package (Case 482) with media-resistant gel; same pressure range and accuracy, but lower max pressure rating (200 kPa vs. 400 kPa). | Better suited for compact PCBs and applications requiring surface-mount assembly; not rated for high-pressure transients. | Choose MPXAZ4115A6U only if space-constrained SMT layout is mandatory and maximum applied pressure remains below 200 kPa. |
Compared with MPX4115AS, MPX4115AP offers identical electrical performance with alternate mechanical mounting, while MPXAZ4115A6U trades package size and assembly method for reduced pressure tolerance-neither is pin-compatible, and PCB redesign is required for substitution.
Availability
MPX4115AS is available at Aetrix Electronics and suitable for aviation altimeters, weather reporting devices, and engine control units requiring stable component supply, long-lifecycle support, and traceable sourcing of legacy Freescale pressure sensors.
Supply support for MPX4115AS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, specializing in automotive, industrial, and consumer applications before its 2015 acquisition.
The MPX4115AS belongs to Freescale's legacy MPX4115A series of integrated absolute pressure sensors, engineered specifically for barometric and altimeter use cases demanding high accuracy, on-chip compensation, and ruggedized packaging.
FAQ
What is the pressure media compatibility of the MPX4115AS?
The MPX4115AS is qualified for use with dry air as the pressure medium. It features fluorosilicone gel encapsulation that isolates the die while transmitting pressure; other media may affect long-term reliability. Freescale explicitly states that media other than dry air may cause adverse effects-consult NXP's application notes or factory support before deploying with gases or vapors beyond dry air.
Does the MPX4115AS require external signal conditioning?
No, the MPX4115AS does not require external signal conditioning. It integrates on-chip bipolar op-amp circuitry, thin-film resistor networks, and factory calibration to deliver a fully conditioned 0.2–4.8 V ratiometric analog output. Only recommended decoupling (1.0 μF + 0.01 μF at VCC) is needed per Figure 3 of the datasheet to meet specifications.
What is the meaning of "stove-pipe port" in MPX4115AS package identification?
The "stove-pipe port" refers to the vertical, cylindrical pressure inlet on the MPX4115AS (Case 867E-03), distinguishing it from side-port (MPX4115AP) or surface-mount (MPXAZ4115A) variants. This geometry enables direct connection to tubing or pressure chambers aligned perpendicular to the PCB surface-critical for compact altimeter and MAP sensor assemblies.
How is the MPX4115AS calibrated across temperature?
The MPX4115AS uses on-chip thin-film resistor networks to implement analog temperature compensation for both offset and full-scale span across −40°C to +125°C. This compensation is factory-trimmed and embedded in the signal path-no external thermistor, lookup tables, or software correction is needed to maintain ±1.5% VFSS accuracy from 0°C to 85°C.
Can the MPX4115AS be used in differential or gauge pressure configurations?
No, the MPX4115AS is strictly an absolute pressure sensor with a sealed vacuum reference cavity. Its internal structure-featuring a stainless steel cap and sealed vacuum reference-prevents use as a differential or gauge device. Attempting to apply pressure to both sides or venting the reference will damage functionality or invalidate calibration.
MPX4115AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MPX4115A
- Package/Case:
- 6-SIP Module
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Board Mount
- Pressure Type:
- Absolute
- Operating Pressure:
- 2.18PSI ~ 16.68PSI (15kPa ~ 115kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.2 V ~ 4.8 V
- Accuracy:
- -
- Voltage - Supply:
- 4.85V ~ 5.35V
- Port Size:
- Male - 0.19" (4.93mm) Tube
- Port Style:
- Barbed
- Features:
- Temperature Compensated
- Termination Style:
- PC Pin
- Maximum Pressure:
- 58.02PSI (400kPa)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
MPX4115AS FAQ
1.How can I place an order for MPX4115AS through Aetrix?
Please submit a Request for Quotation (RFQ) for MPX4115AS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPX4115AS reliable?
The price and inventory of MPX4115AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPX4115AS is usually 5 days.
3.What payment methods are accepted for MPX4115AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPX4115AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPX4115AS?
MPX4115AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPX4115AS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPX4115AS?
For technical support, including MPX4115AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPX4115AS requirements.
6.How does Aetrix verify that MPX4115AS is sourced from the original manufacturer or authorized distributors?
All MPX4115AS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPX4115AS meets industry standards.
7.What is the process for return or replacement of MPX4115AS?
All MPX4115AS units undergo pre-shipment inspection (PSI). If there is an issue with MPX4115AS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPX4115AS part is unused and in its original packaging.
Return procedure for MPX4115AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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