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NXP Semiconductors MPXA6115AC6U
- Part No.:
- MPXA6115AC6U
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SMD, Gull Wing, Top Port
- Datasheet:
-
MPXA6115AC6U.pdf
- Description:
- SENSOR 16.68PSIA 0.13" 4.7V
- Quantity:
- Payment:
- Shipping:
Inventory:447
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Product details
Overview
MPXA6115AC6U from NXP (formerly Freescale) is an absolute pressure sensor IC with monolithic silicon piezoresistive sensing element, on-chip bipolar op amp signal conditioning, and thin-film temperature compensation. It delivers a ratiometric analog output (0.200 V to 4.700 V at 5.0 V supply) over a 15–115 kPa range, ±1.5% full-scale span accuracy from 0 °C to 85 °C, and operates from −40 °C to +125 °C. It is used in engine manifold absolute pressure (MAP) sensing and barometric measurement.
For engineers reviewing the MPXA6115AC6U datasheet, MPXA6115AC6U pinout, MPXA6115AC6U application, or MPXA6115AC6U equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts for industrial and automotive pressure-sensing designs.
Technical Context
The MPXA6115AC6U integrates a micromachined silicon diaphragm with piezoresistive elements, thin-film resistor networks, and a bipolar op amp stage to deliver a high-level analog voltage output directly proportional to absolute pressure. Its transfer function is VOUT = VS × (0.009 × P − 0.095), where VS = 5.0 V ± 0.25 V and P is pressure in kPa.
On-chip temperature compensation corrects offset and span drift across −40 °C to +125 °C using internal calibration coefficients. The device features a sealed vacuum reference cavity and fluorosilicone gel protection for media resistance, with response time of 1.0 ms and warm-up time of 20 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 15–115 kPa absolute - defines usable operating window for MAP and barometric applications. |
| Output Voltage Range | 0.200 V to 4.700 V at VS = 5.0 V - enables direct ADC interfacing without external amplification. |
| Accuracy | ±1.5% VFSS over 0 °C to 85 °C - specifies total error including linearity, hysteresis, and thermal effects. |
| Supply Voltage | 4.75–5.25 V DC - ratiometric operation ensures output scaling tracks supply variations. |
| Operating Temperature | −40 °C to +125 °C - supports under-hood automotive and industrial ambient conditions. |
| Response Time | 1.0 ms (10%–90%) - suitable for dynamic pressure monitoring such as intake pulsation analysis. |
| Sensitivity | 45.0 mV/kPa - determines resolution per kPa change; enables ~0.22 kPa LSB at 12-bit 5 V ADC. |
Pinout & Package
MPXA6115AC6U uses Case 98ASB17757C: small outline package (SOP), 8-pin, surface-mount, thermoplastic (PPS) body with chamfered corner marking Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DNC | Do not connect - no internal connection; serves only as mechanical pin 1 identifier. |
| 2 | VS | Voltage supply input - must be 4.75–5.25 V DC; powers internal amplifier and sensing bridge. |
| 3 | GND | Analog ground reference - return path for supply and output; requires low-impedance PCB connection. |
| 4 | VOUT | Analog output voltage - ratiometric, 0.200–4.700 V over full pressure range; connects directly to ADC input. |
| 5–8 | DNC | Do not connect - electrically isolated; no internal bond wires or circuitry attached. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip temperature compensation | Corrects offset and span drift across −40 °C to +125 °C without external components or software calibration. |
| Fluorosilicone gel isolation | Protects die and wire bonds from humidity and automotive fluids while transmitting pressure accurately. |
| Ratiometric output | Output scales linearly with supply voltage, eliminating need for precision voltage references in ADC systems. |
| Sealed vacuum reference | Enables true absolute pressure measurement referenced to hard vacuum, critical for barometric and MAP use. |
| High output signal level | Delivers >4.5 V full-scale swing at 5 V supply - improves SNR and reduces susceptibility to noise in embedded systems. |
Applications
| Engine Manifold Absolute Pressure (MAP) | Barometric Pressure Monitoring |
|---|---|
|
Use Scenario: Real-time measurement of intake manifold pressure in gasoline and diesel engines for fuel injection timing and air mass calculation. IC Role / Device Role / Timing Role: Absolute pressure transducer providing analog voltage output synchronized to engine cycle events. Use Value: Enables closed-loop air-fuel ratio control with ±1.5% accuracy over full operating temperature range, improving emissions and efficiency. |
Use Scenario: Atmospheric pressure sensing in portable weather stations and environmental data loggers. IC Role / Device Role / Timing Role: Primary barometric reference sensor delivering stable, calibrated kPa output for altitude and trend analysis. Use Value: Provides 15–115 kPa range covering sea-level to 3000 m elevation with <1.0 ms response for rapid weather event detection. |
| Industrial Vacuum Control | Medical Respiratory Equipment |
|
Use Scenario: Monitoring vacuum levels in HVAC refrigerant recovery systems and semiconductor process chambers. IC Role / Device Role / Timing Role: Absolute pressure interface converting chamber pressure into microcontroller-readable voltage. Use Value: Delivers repeatable 0.22 kPa resolution (at 12-bit ADC) and ±0.25%VFSS offset stability after 1000 pressure cycles. |
Use Scenario: Sensing airway pressure in portable ventilators and CPAP devices during inhalation/exhalation phases. IC Role / Device Role / Timing Role: Safety-critical pressure transducer feeding real-time feedback to motor control loop. Use Value: Meets medical-grade reliability with −40 °C to +125 °C operation, fluorosilicone media resistance, and <20 ms warm-up time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPXH6115AC6U | Super small outline package (Case 98ARH99089A); identical electrical specs but 30% smaller footprint. | Better suited for space-constrained PCBs in portable or wearable medical devices. | Select when board area is limited and same performance is required; verify reflow profile for SSOP. |
| MPXA6115A6U | Same SOP package (Case 98ASB17756C); differs only in shipping format (rails vs. tape/reel) and minor marking. | No functional difference; compatible in all design and qualification contexts. | Select for standard rail delivery; MPXA6115AC6U offers same performance with updated packaging documentation. |
Compared with MPXH6115AC6U, MPXA6115AC6U provides identical sensing performance in a larger SOP package ideal for prototyping and manual assembly; compared with MPXA6115A6U, it shares full electrical compatibility but reflects updated manufacturing traceability and packaging revision (Case 98ASB17757C).
Availability
MPXA6115AC6U is available at Aetrix Electronics and suitable for engine control units, weather station instrumentation, and industrial vacuum monitoring requiring stable component supply, long-term lifecycle support, and automotive-qualified reliability.
Supply support for MPXA6115AC6U 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 formed from the spin-off of Freescale Semiconductor and Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The MPXA6115AC6U belongs to NXP's legacy MPXxx6115A series of monolithic, signal-conditioned absolute pressure sensors, designed specifically for high-reliability analog pressure measurement in harsh environments including under-hood automotive and industrial control systems.
FAQ
What is the pressure reference type of the MPXA6115AC6U?
The MPXA6115AC6U is an absolute pressure sensor with a sealed vacuum reference cavity. It measures pressure relative to perfect vacuum, not ambient atmospheric pressure or another port. This makes MPXA6115AC6U suitable for manifold absolute pressure (MAP) and barometric applications where absolute reference is mandatory. Its datasheet confirms "Absolute" pressure type in the ordering information table and block diagram.
Does the MPXA6115AC6U require external calibration or trimming?
No, the MPXA6115AC6U does not require external calibration or trimming. It features factory-calibrated, on-chip temperature compensation for both offset and full-scale span across −40 °C to +125 °C. All compensation is implemented via integrated thin-film resistor networks and bipolar op amp circuitry. The MPXA6115AC6U delivers its specified ±1.5% accuracy over 0 °C to 85 °C without user intervention.
What is the maximum supply voltage the MPXA6115AC6U can tolerate?
The MPXA6115AC6U has an absolute maximum supply voltage (VS) rating of 5.25 V DC, with recommended operation between 4.75 V and 5.25 V. Exceeding 5.25 V may cause permanent damage, as stated in Table 2 (Maximum Ratings) of the MPXA6115A datasheet Rev. 7.3. The device is ratiometric, so output scales linearly with VS within this range - MPXA6115AC6U output remains valid and stable only when VS stays within specification.
Can the MPXA6115AC6U be used with a 3.3 V microcontroller ADC?
Yes, the MPXA6115AC6U can interface with a 3.3 V microcontroller ADC, but only if the MCU's ADC reference voltage is ≥4.7 V or the MPXA6115AC6U's supply is reduced accordingly. Since MPXA6115AC6U's full-scale output is 4.700 V at 5.0 V supply, direct connection to a 3.3 V ADC input risks saturation. Recommended practice is to power MPXA6115AC6U at 3.3 V (within its 4.75–5.25 V spec? No - 3.3 V is below minimum), so instead use a resistive divider or rail-to-rail buffer. MPXA6115AC6U itself requires ≥4.75 V supply.
Is the MPXA6115AC6U qualified for automotive applications?
Yes, the MPXA6115AC6U is qualified for automotive applications. Its operating temperature range (−40 °C to +125 °C), humidity resistance, fluorosilicone gel encapsulation, and qualification testing per automotive reliability standards (as documented in Freescale/NXP application notes and datasheet sections on media resistance and thermal hysteresis) confirm suitability for under-hood use. It is explicitly listed for engine control/manifold absolute pressure (MAP) in the Typical Applications section of the MPXA6115A datasheet.
MPXA6115AC6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MPXA6115A
- Package/Case:
- 8-SMD, Gull Wing, Top Port
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- Absolute
- Operating Pressure:
- 2.18PSI ~ 16.68PSI (15kPa ~ 115kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.2 V ~ 4.7 V
- Accuracy:
- ±1.5%
- Voltage - Supply:
- 4.75V ~ 5.25V
- 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:
- -
MPXA6115AC6U FAQ
1.How can I place an order for MPXA6115AC6U through Aetrix?
Please submit a Request for Quotation (RFQ) for MPXA6115AC6U 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 MPXA6115AC6U reliable?
The price and inventory of MPXA6115AC6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPXA6115AC6U is usually 5 days.
3.What payment methods are accepted for MPXA6115AC6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPXA6115AC6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPXA6115AC6U?
MPXA6115AC6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPXA6115AC6U 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 MPXA6115AC6U?
For technical support, including MPXA6115AC6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPXA6115AC6U requirements.
6.How does Aetrix verify that MPXA6115AC6U is sourced from the original manufacturer or authorized distributors?
All MPXA6115AC6U 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 MPXA6115AC6U meets industry standards.
7.What is the process for return or replacement of MPXA6115AC6U?
All MPXA6115AC6U units undergo pre-shipment inspection (PSI). If there is an issue with MPXA6115AC6U, 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 MPXA6115AC6U part is unused and in its original packaging.
Return procedure for MPXA6115AC6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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