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NXP Semiconductors MPXA4250AC6U
- Part No.:
- MPXA4250AC6U
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD, Gull Wing, Top Port
- Datasheet:
-
MPXA4250AC6U.pdf
- Description:
- SENSOR 36.26PSIA 0.13" 4.9V
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
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Product details
Overview
MPXA4250AC6U from NXP Semiconductors is a manifold absolute pressure (MAP) sensor with on-chip signal conditioning, temperature compensation, and factory calibration. It measures 20–250 kPa absolute pressure, delivers ratiometric analog output (VOUT = VCC × (P × 0.004 – 0.04)), operates from –40 °C to +125 °C, and is packaged in a surface-mount small outline package (Case 482A-01). It is used in engine control systems to compute fuel injection timing and quantity.
For engineers reviewing the MPXA4250AC6U datasheet, MPXA4250AC6U pinout, MPXA4250AC6U application, or MPXA4250AC6U equivalent, this page provides verified technical context, pin-level design meaning, calibrated transfer function details, automotive-grade reliability data, and validated alternative options for intake manifold sensing designs.
Technical Context
The MPXA4250AC6U integrates a piezoresistive silicon diaphragm with thin-film metallization and bipolar signal conditioning circuitry. Its architecture includes two gain stages, on-chip temperature compensation over –40 °C to +125 °C, and a ground-reference shift circuit - all monolithically fabricated on a single die.
It outputs a ratiometric voltage proportional to supply (VCC = 5.1 V ± 0.25 V), with full-scale span (VFSS) of 4.692 V and ±1.5 % accuracy over 0 °C to 85 °C. Response time is 1.0 ms (10–90%), and warm-up time is 20 ms after power-on stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 20–250 kPa absolute - matches typical naturally aspirated and low-boost turbocharged intake manifold operating range. |
| Supply Voltage | 4.85–5.35 Vdc - ratiometric operation ensures output scaling tracks VCC variations, simplifying ADC reference alignment. |
| Full Scale Span | 4.692 V - defines usable output swing between min/max pressure points; enables 12-bit+ resolution with standard 5 V ADCs. |
| Accuracy | ±1.5 %VFSS over 0 °C to 85 °C - includes linearity, temperature hysteresis, pressure hysteresis, TcSpan, and TcOffset contributions. |
| Response Time | 1.0 ms (10–90%) - supports real-time closed-loop air-fuel ratio control in high-RPM engine operation. |
| Operating Temp | –40 °C to +125 °C - qualified for under-hood automotive environments without external thermal shielding. |
| Sensitivity | 20 mV/kPa - linear transfer coefficient enabling direct kPa-to-voltage conversion without software lookup tables. |
Pinout & Package
MPXA4250AC6U uses the Case 482A-01 small outline package (8-pin, surface-mount), per document 98ASB17757C. Pins 1, 5, 6, 7, and 8 are no-connect (DNC); only pins 2 (VCC), 3 (GND), and 4 (VOUT) are functional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | DNC | Internally unconnected; must remain floating - no PCB trace or pull-up/pull-down allowed. |
| Pin 2 | VCC | 5.1 V ± 0.25 V supply input; requires 1.0 µF + 0.01 µF + 470 pF decoupling per Figure 5 to meet spec. |
| Pin 3 | GND | Analog ground reference for internal signal chain; must connect to clean, low-impedance system ground plane. |
| Pin 4 | VOUT | Ratiometric analog output (0.204–4.896 V); drives microcontroller ADC directly with ≤100 Ω source impedance. |
| Pins 5–8 | DNC | All internally isolated; no electrical or mechanical connection - leave unpopulated on PCB footprint. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip temperature compensation | Validated over –40 °C to +125 °C; eliminates need for external thermistor or digital correction in engine ECU designs. |
| Factory-calibrated transfer function | VOUT = VCC × (P × 0.004 – 0.04) ± error; removes system-level calibration steps during production test. |
| Patented silicon shear-stress strain gauge | Enables high stability and low hysteresis (<0.5 %VFSS offset drift after 1000-hour pulsed pressure/thermal cycling). |
| Small-outline surface-mount package | Case 482A-01 (10.54 × 10.54 × 2.54 mm); compatible with standard SMT reflow, reduces board space vs. legacy unibody modules. |
| Ratiometric output | Output scales with VCC; allows shared 5 V rail between sensor and microcontroller ADC reference, reducing BOM count. |
Applications
| Engine Control Unit (ECU) | Turbocharger Boost Monitoring |
|---|---|
|
Use Scenario: Real-time measurement of intake manifold absolute pressure in gasoline direct injection engines. IC Role / Device Role / Timing Role: Primary MAP sensor feeding closed-loop air-fuel ratio calculation at up to 10 kHz sampling rate. Use Value: Enables stoichiometric combustion control across –40 °C to +125 °C ambient, meeting Euro 6/LEV III emissions requirements. |
Use Scenario: Monitoring boost pressure in low-pressure turbocharged diesel engines (up to 250 kPa). IC Role / Device Role / Timing Role: Absolute pressure transducer providing feedback to wastegate actuator control loop. Use Value: Delivers 1.0 ms response time and ±1.5 %VFSS accuracy, supporting transient boost regulation within 50 ms. |
| Aftertreatment System Control | Industrial Air Compressor Monitoring |
|
Use Scenario: Measuring intake pressure upstream of diesel particulate filter (DPF) to infer soot loading. IC Role / Device Role / Timing Role: Calibrated analog pressure interface to engine management MCU's 12-bit SAR ADC. Use Value: On-chip temperature compensation eliminates drift-induced false DPF regeneration triggers across thermal cycles. |
Use Scenario: Continuous monitoring of compressed air header pressure in HVAC and pneumatic control systems. IC Role / Device Role / Timing Role: Standalone absolute pressure sensor interfaced to industrial PLC analog input module. Use Value: 20–250 kPa range and epoxy-unibody-compatible packaging support non-automotive use with same calibration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar manifold absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPX4250AP | Unibody package (Case 867B-04), 3-pin TO-style metal can; no DNC pins; higher mechanical robustness but larger footprint. | Preferred for high-vibration off-road or heavy-duty truck applications where PCB mounting reliability is critical. | Select MPX4250AP when mechanical shock resistance outweighs PCB area constraints and SMT compatibility. |
| MPXA4115A6U | Narrower 15–115 kPa range; identical Case 482-01 package; ±1.5 %VFSS accuracy; lower full-scale output (2.5 V). | Optimized for port fuel injection or naturally aspirated engines without forced induction. | Choose MPXA4115A6U when system pressure never exceeds 115 kPa - improves ADC resolution by ~2× in that range. |
Compared with MPX4250AP and MPXA4115A6U, MPXA4250AC6U uniquely balances SMT manufacturability, 20–250 kPa turbo-compatible range, and automotive-qualified temperature performance in a compact 8-pin SOP - making it optimal for modern engine control modules requiring high-volume assembly and broad pressure coverage.
Availability
MPXA4250AC6U is available at Aetrix Electronics and suitable for engine control units, turbocharger boost monitoring systems, and aftertreatment system control requiring stable component supply across automotive production lifecycles.
Supply support for MPXA4250AC6U 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 is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in sensor signal conditioning and embedded processing.
The MPX/MPXA series was designed specifically for engine management and industrial pressure sensing, integrating monolithic silicon transducers with on-die amplification, temperature compensation, and calibration to replace hybrid sensor modules.
FAQ
What is the pressure range and output behavior of the MPXA4250AC6U?
The MPXA4250AC6U measures absolute pressure from 20 kPa to 250 kPa. Its output voltage follows VOUT = VCC × (P × 0.004 – 0.04), yielding 0.204 V at 20 kPa and 4.896 V at 250 kPa when VCC = 5.1 V. The device saturates outside this range and maintains ±1.5 %VFSS accuracy over 0 °C to 85 °C.
Does the MPXA4250AC6U require external temperature compensation?
No. The MPXA4250AC6U includes on-chip temperature compensation validated over –40 °C to +125 °C. This eliminates the need for external thermistors or software-based correction algorithms, simplifying ECU firmware and improving long-term stability in under-hood environments.
Which pins are functional on the MPXA4250AC6U, and how should DNC pins be handled?
Only pins 2 (VCC), 3 (GND), and 4 (VOUT) are functional on the MPXA4250AC6U. Pins 1, 5, 6, 7, and 8 are no-connect (DNC) and must remain unconnected - no traces, vias, or terminations. Connecting them risks internal damage or parametric deviation.
Can the MPXA4250AC6U be used with a 3.3 V microcontroller system?
No. The MPXA4250AC6U requires VCC = 4.85–5.35 Vdc and is ratiometric to that supply. Using 3.3 V violates its operating specification and results in invalid output voltage and degraded accuracy. A dedicated 5.1 V LDO or regulator is required for proper operation of the MPXA4250AC6U.
What is the recommended decoupling network for the MPXA4250AC6U power supply?
The MPXA4250AC6U requires a three-capacitor decoupling network on VCC: 1.0 µF (bulk), 0.01 µF (mid-frequency), and 470 pF (high-frequency), all referenced to GND. This configuration, shown in Figure 5 of the datasheet, is mandatory to meet specified noise immunity, response time, and accuracy targets.
MPXA4250AC6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MPXA4250A
- Package/Case:
- 8-SMD, Gull Wing, Top Port
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Applications:
- Board Mount
- Pressure Type:
- Absolute
- Operating Pressure:
- 2.9PSI ~ 36.26PSI (20kPa ~ 250kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.2 V ~ 4.9 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:
- 145.04PSI (1000kPa)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MPXA4250AC6U FAQ
1.How can I place an order for MPXA4250AC6U through Aetrix?
Please submit a Request for Quotation (RFQ) for MPXA4250AC6U 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 MPXA4250AC6U reliable?
The price and inventory of MPXA4250AC6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPXA4250AC6U is usually 5 days.
3.What payment methods are accepted for MPXA4250AC6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPXA4250AC6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPXA4250AC6U?
MPXA4250AC6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPXA4250AC6U 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 MPXA4250AC6U?
For technical support, including MPXA4250AC6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPXA4250AC6U requirements.
6.How does Aetrix verify that MPXA4250AC6U is sourced from the original manufacturer or authorized distributors?
All MPXA4250AC6U 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 MPXA4250AC6U meets industry standards.
7.What is the process for return or replacement of MPXA4250AC6U?
All MPXA4250AC6U units undergo pre-shipment inspection (PSI). If there is an issue with MPXA4250AC6U, 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 MPXA4250AC6U part is unused and in its original packaging.
Return procedure for MPXA4250AC6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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