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NXP Semiconductors MPXA4115AC6U
- Part No.:
- MPXA4115AC6U
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD, Gull Wing, Top Port
- Datasheet:
-
MPXA4115AC6U.pdf
- Description:
- SENSOR 16.68PSIA 0.13" 4.8V
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
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Product details
Overview
MPXA4115AC6U from NXP Semiconductors (formerly Freescale) is a media-resistant, temperature-compensated, factory-calibrated absolute pressure sensor IC designed for barometric and altimeter applications. It delivers a ratiometric 0.2–4.8 V analog output over a 15–115 kPa range, operates from 4.85–5.35 V supply, consumes ≤10 mA, and maintains ±1.5% full-scale accuracy across 0°C to 85°C. It is used in aviation altimeters and industrial weather stations where stable air-pressure measurement is critical.
For engineers reviewing the MPXA4115AC6U datasheet, MPXA4115AC6U pinout, MPXA4115AC6U application, or MPXA4115AC6U equivalent, this page provides verified technical context, package-validated pin functions, real-world use scenarios, and confirmed alternative options for BAP (barometric/altimeter pressure) sensing systems requiring media resistance and surface-mount compatibility.
Technical Context
The MPXA4115AC6U integrates a silicon piezoresistive sensing element with on-chip bipolar op amp circuitry, thin-film resistor networks for gain and offset trimming, and analog signal conditioning. Its transfer function is VOUT = VS × (0.009 × P − 0.095), where P is absolute pressure in kPa and VS is supply voltage.
It features internal temperature compensation over −40°C to +125°C, uses fluorosilicone gel for die protection, and is qualified for dry-air media only. The device requires external decoupling (1.0 μF + 0.01 μF + 470 pF) per Figure 3 to meet electrical specifications and exhibits 1.0 ms response time (10%–90%) with 20 ms warm-up time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 15–115 kPa (2.2–16.7 psi); supports barometric altitude resolution down to ~10 m at sea level. |
| Output Voltage | 0.2–4.8 V ratiometric; scales linearly with supply voltage - simplifies ADC reference alignment. |
| Supply Voltage | 4.85–5.35 V; tight 5.1 V nominal enables stable biasing without external regulation. |
| Accuracy | ±1.5% VFSS over 0°C–85°C; includes linearity, temp hysteresis, pressure hysteresis, TcSpan, and TcOffset. |
| Response Time | 1.0 ms (10%–90%); suitable for dynamic pressure monitoring in engine control and UAV altimetry. |
| Operating Temp | −40°C to +125°C; full temperature compensation ensures stability in automotive under-hood or avionics environments. |
| Sensitivity | 46 mV/kPa; high gain reduces need for external amplification in low-noise signal chains. |
Pinout & Package
MPXA4115AC6U uses the Case 482A-01 small-outline package: 6-pin, surface-mount, thermoplastic (PPS) body with port attached on the pressure (P1) side. Dimensions: 10.79 × 10.79 × 5.84 mm (L × W × H), lead pitch 2.54 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Analog output pin; 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 | VS | Positive supply input; accepts 4.85–5.35 V; requires local decoupling per Figure 3 for spec compliance. |
| 4 | No Connect | Internally unconnected; must remain floating - no external tie or pull-up/down. |
| 5 | No Connect | Internally unconnected; PCB footprint must isolate this pad from traces and planes. |
| 6 | No Connect | Internally unconnected; not used for calibration, test, or configuration - leave open. |
Key Features
| Feature | Design Value |
|---|---|
| Media-resistant gel encapsulation | Fluorosilicone gel isolates die from environmental contaminants while transmitting pressure - enables reliable operation in humid or mildly corrosive air paths. |
| On-chip temperature compensation | Compensates offset and span drift across −40°C to +125°C using thin-film resistor networks - eliminates need for external thermal sensors or software correction. |
| Factory-calibrated output | Delivers traceable 0.2–4.8 V output at 15–115 kPa with ±1.5% error budget - reduces system-level calibration effort and test time. |
| Ratiometric output architecture | Output scales linearly with supply voltage - allows direct connection to same VREF as microcontroller ADC, removing ratio-metric error sources. |
| Small-outline surface-mount package | Case 482A-01 footprint supports automated assembly and compact layout - ideal for space-constrained UAV, portable weather, or embedded control modules. |
Applications
| Aviation Altimeter | Industrial Weather Station |
|---|---|
Use Scenario: Mounted in unmanned aerial vehicle (UAV) flight controller to estimate altitude above mean sea level using ambient air pressure. IC Role / Device Role / Timing Role: Absolute pressure transducer providing primary altitude reference; output sampled at 10–50 Hz by MCU ADC. Use Value: Enables <10 m altitude resolution with factory-trimmed linearity and on-chip temperature compensation - reduces reliance on GPS during signal loss. | Use Scenario: Integrated into outdoor environmental monitoring node measuring atmospheric pressure for weather forecasting and climate logging. IC Role / Device Role / Timing Role: Barometric pressure sensor feeding calibrated analog voltage to low-power microcontroller for periodic data transmission. Use Value: Stable 0.2–4.8 V output and −40°C to +125°C operation ensure long-term accuracy in unheated enclosures exposed to seasonal temperature swings. |
| Engine Control Unit (ECU) | Portable Altitude Logger |
Use Scenario: Installed in automotive ECU to monitor intake manifold absolute pressure (MAP) for fuel injection timing and air-fuel ratio calculation. IC Role / Device Role / Timing Role: Absolute pressure sensor interfacing directly with 10-bit or 12-bit MCU ADC; output updated every 10–20 ms. Use Value: Media-resistant gel and 400 kPa max pressure rating allow safe operation with boosted intake systems; ratiometric output improves closed-loop control robustness. | Use Scenario: Embedded in handheld hiking or mountaineering device to log elevation changes during multi-day treks. IC Role / Device Role / Timing Role: Low-power absolute pressure sensor operating intermittently (e.g., once per minute) to extend battery life. Use Value: 7.0 mA typical supply current and 20 ms warm-up time enable rapid wake-and-measure cycles - achieving >1-year battery life on CR2032. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPXAZ4115AC6U | Identical pinout, package, and electrical specs; differs only in media-resistant gel formulation - optimized for harsher air contaminants. | Preferred where exposure to oil mist, salt spray, or condensation is expected (e.g., marine altimeters). | Select MPXAZ4115AC6U when environmental sealing beyond standard fluorosilicone is required; otherwise MPXA4115AC6U suffices for clean-air barometry. |
| MPX5114DP | Same 15–115 kPa range but in dual-port differential package; output is 0.2–4.7 V; lacks media-resistant gel; rated for −40°C to +125°C. | Requires external vacuum reference and differential porting - unsuitable for single-sided absolute pressure mounting. | Choose MPX5114DP only if differential pressure measurement is needed; for absolute pressure, MPXA4115AC6U offers superior media protection and simpler mechanical integration. |
Compared with MPXAZ4115AC6U, the MPXA4115AC6U uses standard fluorosilicone gel - adequate for indoor or clean-air barometric use - while MPX5114DP requires differential porting and offers no media resistance, making both less suitable than MPXA4115AC6U for ruggedized absolute pressure applications.
Availability
MPXA4115AC6U is available at Aetrix Electronics and suitable for aviation altimeters, industrial weather stations, and engine control units requiring stable component supply, long-lifecycle support, and consistent media-resistant packaging.
Supply support for MPXA4115AC6U 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
NXP Semiconductors acquired Freescale in 2015 and continues to support legacy pressure sensor families with documentation, quality assurance, and long-term supply commitments.
The MPXA4115AC6U belongs to Freescale's MPX4115A-series barometric/altimeter pressure (BAP) sensors, engineered for high-reliability absolute pressure measurement in aerospace, automotive, and environmental monitoring systems where on-chip signal conditioning and temperature compensation are essential.
FAQ
What is the maximum pressure rating for MPXA4115AC6U?
The MPXA4115AC6U has a maximum pressure rating of 400 kPa, well above its operational range of 15–115 kPa. This safety margin prevents diaphragm damage during transient overpressure events such as rapid cabin decompression or HVAC surges. The device remains functional and calibrated within its specified range, and exceeding 400 kPa may cause permanent degradation. Always verify mechanical housing and port design to avoid exposing MPXA4115AC6U to pressures beyond this limit.
Does MPXA4115AC6U require external calibration after soldering?
No, MPXA4115AC6U is factory-calibrated and temperature-compensated, delivering guaranteed 0.2–4.8 V output across its 15–115 kPa range with ±1.5% full-scale accuracy. Post-solder calibration is unnecessary for most applications. However, system-level offset trimming may improve precision in high-accuracy altimetry - but this is optional and not required to meet datasheet specifications. The MPXA4115AC6U's on-chip compensation ensures stable performance without user calibration.
Can MPXA4115AC6U be used with a 3.3 V microcontroller ADC?
Yes, MPXA4115AC6U can interface with a 3.3 V microcontroller ADC, but only if the MCU's ADC reference is also 3.3 V and the MPXA4115AC6U is powered from a separate 5.1 V supply. Its output is ratiometric: VOUT = VS × (0.009 × P − 0.095). Using 3.3 V for VS violates the 4.85–5.35 V specification and degrades accuracy and linearity. Always power MPXA4115AC6U at 5.1 V and scale its 0.2–4.8 V output via resistive divider or rail-to-rail op-amp if needed for 3.3 V ADC compatibility.
What is the pressure media compatibility of MPXA4115AC6U?
MPXA4115AC6U is qualified for dry air only. Its fluorosilicone gel protects the die but does not provide chemical resistance to liquids, oils, solvents, or aggressive gases. Exposure to moisture condensate, fuel vapors, or cleaning agents may degrade long-term stability or cause zero-drift. For non-dry-air environments, consult NXP's application notes or select the MPXAZ4115AC6U variant, which uses media-resistant gel. Never submerge or expose MPXA4115AC6U to liquid media - it is not IP-rated or hermetically sealed for such use.
How does the MPXA4115AC6U handle temperature variations during operation?
MPXA4115AC6U incorporates on-chip thin-film resistor networks that actively compensate for both offset and full-scale span drift across −40°C to +125°C. Its error budget includes TcOffset and TcSpan contributions, limiting total inaccuracy to ±1.5% VFSS over 0°C–85°C. At extremes (e.g., −40°C or +125°C), output remains functional but with relaxed accuracy - datasheet guarantees apply only to the 0°C–85°C range. No external thermistor or software correction is needed for standard barometric use, as compensation is fully integrated and factory-trimmed.
MPXA4115AC6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MPXA4115A
- Package/Case:
- 8-SMD, Gull Wing, Top Port
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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:
- ±1.5%
- Voltage - Supply:
- 4.85V ~ 5.35V
- Port Size:
- Male - 0.13" (3.17mm) Tube
- Port Style:
- Barbless
- Features:
- Temperature Compensated
- Termination Style:
- Gull Wing
- Maximum Pressure:
- 58.02PSI (400kPa)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MPXA4115AC6U FAQ
1.How can I place an order for MPXA4115AC6U through Aetrix?
Please submit a Request for Quotation (RFQ) for MPXA4115AC6U 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 MPXA4115AC6U reliable?
The price and inventory of MPXA4115AC6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPXA4115AC6U is usually 5 days.
3.What payment methods are accepted for MPXA4115AC6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPXA4115AC6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPXA4115AC6U?
MPXA4115AC6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPXA4115AC6U 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 MPXA4115AC6U?
For technical support, including MPXA4115AC6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPXA4115AC6U requirements.
6.How does Aetrix verify that MPXA4115AC6U is sourced from the original manufacturer or authorized distributors?
All MPXA4115AC6U 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 MPXA4115AC6U meets industry standards.
7.What is the process for return or replacement of MPXA4115AC6U?
All MPXA4115AC6U units undergo pre-shipment inspection (PSI). If there is an issue with MPXA4115AC6U, 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 MPXA4115AC6U part is unused and in its original packaging.
Return procedure for MPXA4115AC6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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