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NXP Semiconductors MPXH6400AC6U
- Part No.:
- MPXH6400AC6U
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-SOIC (0.335", 8.50mm Width), Top Port
- Datasheet:
-
MPXH6400AC6U.pdf
- Description:
- MPXH6400 - PEIZORESISTIVE SENSOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,622
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Product details
Overview
MPXH6400AC6U from Freescale is an absolute pressure sensor with 20–400 kPa range, ratiometric analog output (0.133–4.866 V at 5 V supply), ±1.5% full-scale accuracy over 0–85 °C, and integrated temperature compensation. It serves as a signal-conditioned transducer in engine intake manifolds for LPG/CNG fuel systems.
For engineers reviewing the MPXH6400AC6U datasheet, MPXH6400AC6U pinout, MPXH6400AC6U application, or MPXH6400AC6U equivalent, key selection criteria include absolute pressure sensing capability, super small outline package (98ARH99089A), 1.0 ms response time, and compatibility with microcontroller ADC interfaces requiring stable ratiometric scaling.
Technical Context
The MPXH6400AC6U integrates a piezoresistive silicon diaphragm with on-chip bipolar op-amp circuitry and thin-film resistor networks to deliver a high-level analog voltage output directly proportional to absolute pressure. Its architecture includes two-stage gain amplification, ground reference shift circuitry, and on-die temperature compensation calibrated across -40 °C to +125 °C.
It operates ratiometrically with supply voltage (4.64–5.36 V), exhibits 12.1 mV/kPa sensitivity, and delivers full-scale span of 4.467–4.733 V at 5 V supply. The sealed vacuum reference cavity enables true absolute pressure measurement, and fluorosilicone gel encapsulation protects die and wire bonds while transmitting pressure signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 20–400 kPa absolute: supports intake manifold monitoring in spark-ignition engines using alternative fuels. |
| Output Voltage Range | 0.133–4.866 V at VS = 5.0 V: directly interfaces 5 V microcontroller ADCs without level-shifting. |
| Accuracy | ±1.5% VFSS over 0–85 °C: ensures reliable air-fuel ratio calculation under ambient thermal cycling. |
| Response Time | 1.0 ms (10–90%): captures transient pressure events during throttle transients in engine control. |
| Supply Voltage | 4.64–5.36 V DC: ratiometric operation maintains output proportionality even with ±3.6% supply variation. |
| Operating Temperature | -40 °C to +125 °C: qualified for under-hood automotive environments with extended thermal margin. |
| Sensitivity | 12.1 mV/kPa: enables precise low-pressure resolution down to ~0.8 kPa per LSB with 12-bit ADC. |
Pinout & Package
MPXH6400AC6U uses the surface-mount super small outline package (Case 98ARH99089A), 8-pin, with chamfered corner indicating Pin 1. Pins 1 and 5–8 are internal connections and must remain unconnected. Only three pins are functional: VS (Pin 6), GND (Pin 7), and VOUT (Pin 8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 6 (VS) | Voltage supply input | Accepts 4.64–5.36 V DC; powers internal amplifier and compensation circuitry; ratiometric reference for output scaling. |
| Pin 7 (GND) | Analog ground reference | Provides return path for supply current and output sink/source; must be low-impedance to minimize offset error. |
| Pin 8 (VOUT) | Analog output voltage | Delivers 0.133–4.866 V proportional to absolute pressure; requires 100 nF decoupling per recommended layout. |
Key Features
| Feature | Design Value |
|---|---|
| Fully calibrated and compensated | Factory-trimmed linearity, TcOffset, and TcSpan eliminate need for system-level calibration in production. |
| Temperature-compensated (-40 °C to +125 °C) | On-die thin-film resistors and bipolar op-amps maintain accuracy across full automotive ambient range. |
| Durable thermoplastic SMT package | Case 98ARH99089A enables automated assembly and withstands vibration and thermal shock in engine bays. |
| Media-resistant fluorosilicone gel | Protects silicon die from moisture and hydrocarbon vapors in LPG/CNG fuel environments while transmitting pressure. |
| Ratiometric output | Output scales linearly with supply voltage, simplifying power rail design and reducing ADC reference dependency. |
Applications
| Fuel-Injected Engine Intake Monitoring | Liquefied Petroleum Gas (LPG) Vehicle Systems |
|---|---|
Use Scenario: Real-time absolute pressure measurement in intake manifolds of gasoline or bi-fuel engines. IC Role / Device Role / Timing Role: Absolute pressure transducer providing primary load signal for air-fuel ratio calculation and ignition timing. Use Value: ±1.5% VFSS accuracy and 1.0 ms response enable closed-loop combustion control during rapid throttle transitions. | Use Scenario: Pressure feedback in LPG fuel delivery systems for vaporizer and regulator control. IC Role / Device Role / Timing Role: Absolute pressure sensor interfacing with MCU-based fuel management ECU to regulate gas flow. Use Value: Fluorosilicone gel isolation prevents hydrocarbon-induced drift, ensuring long-term stability in LPG exposure. |
| Compressed Natural Gas (CNG) Engine Control | Industrial Process Pressure Monitoring |
Use Scenario: Manifold pressure sensing in CNG-powered commercial vehicles operating across wide ambient temperatures. IC Role / Device Role / Timing Role: Signal-conditioned absolute pressure input to engine control unit for torque and emissions management. Use Value: -40 °C to +125 °C operating range and ±1.5% accuracy support compliance with Euro VI emission standards. | Use Scenario: Low-range pressure monitoring in pneumatic control valves and HVAC refrigerant circuits. IC Role / Device Role / Timing Role: Analog front-end transducer converting process pressure into ratiometric voltage for PLC or embedded controller ADC. Use Value: 20–400 kPa range and 12.1 mV/kPa sensitivity provide 1.2 kPa resolution with 12-bit sampling, sufficient for precision regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPXH6115A | 15–115 kPa range, same package and pinout; lower full-scale pressure and reduced accuracy (±2.5% VFSS). | Targeted at low-pressure vacuum applications (e.g., brake boosters), not suitable for 400 kPa intake manifolds. | Select MPXH6115A only when pressure range is ≤115 kPa and cost sensitivity outweighs accuracy requirements. |
| MPX5700AP | 70–700 kPa range, different SSOP-8 package (98ARH99066A); higher max pressure but no media-resistant gel. | Designed for dry air/dry gas media only; unsuitable for hydrocarbon-rich LPG/CNG environments without external protection. | Choose MPX5700AP for wider pressure coverage where media compatibility is not required and PCB footprint allows case 98ARH99066A. |
Compared with MPXH6115A and MPX5700AP, the MPXH6400AC6U uniquely combines 400 kPa absolute range, ±1.5% accuracy, fluorosilicone media resistance, and 98ARH99089A package-making it the only option qualified for direct integration in LPG/CNG engine control without external isolation.
Availability
MPXH6400AC6U is available at Aetrix Electronics and suitable for fuel-injected engine control, LPG vehicle systems, and industrial process monitoring requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for MPXH6400AC6U 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 processing and analog sensors, known for automotive-grade reliability and system-level integration.
The MPXH6400AC6U belongs to Freescale's MPXxx6400A series of monolithic, signal-conditioned silicon pressure sensors, engineered specifically for accurate, robust absolute pressure measurement in harsh automotive and industrial environments.
FAQ
What is the pressure range and output type of the MPXH6400AC6U?
The MPXH6400AC6U is an absolute pressure sensor with a rated range of 20–400 kPa. It provides a ratiometric analog voltage output (0.133–4.866 V at 5.0 V supply) that scales linearly with applied pressure. Its transfer function is defined as VOUT = VS × (0.002421 × P – 0.00842), where P is pressure in kPa and VS is supply voltage. This output is designed for direct connection to microcontroller ADC inputs without external signal conditioning.
Is the MPXH6400AC6U compatible with LPG or CNG fuel systems?
Yes, the MPXH6400AC6U is explicitly qualified for LPG and CNG vehicle applications. Its fluorosilicone gel encapsulation isolates the silicon die from hydrocarbon vapors while transmitting pressure, preventing long-term drift or degradation. Freescale documentation confirms package porting and mounting options enable tube attachment for remote sensing in liquefied natural gas environments-making MPXH6400AC6U suitable for direct integration in bi-fuel engine ECUs.
What are the supply voltage requirements and current draw of the MPXH6400AC6U?
The MPXH6400AC6U operates with a supply voltage of 4.64–5.36 V DC and draws 6.0–10 mA typical supply current. Its ratiometric behavior means output voltage scales proportionally with VS, allowing tolerance to ±3.6% supply variation without calibration loss. The device is not designed for operation below 4.64 V or above 5.36 V, as specified in the maximum ratings table of the MPXH6400A datasheet Rev. 5.0.
Does the MPXH6400AC6U require external calibration or compensation?
No, the MPXH6400AC6U is fully calibrated and temperature-compensated at the factory. It includes on-chip thin-film resistor networks and bipolar op-amp circuitry that correct for linearity, TcOffset, and TcSpan across -40 °C to +125 °C. No external trimming, software compensation, or system-level calibration is required for standard operation within its specified 0–85 °C accuracy band (±1.5% VFSS). The MPXH6400AC6U delivers plug-and-play analog output.
What is the package type and pin configuration of the MPXH6400AC6U?
The MPXH6400AC6U uses the super small outline package Case 98ARH99089A: an 8-pin surface-mount thermoplastic housing with chamfered corner marking Pin 1. Only three pins are functional-Pin 6 (VS), Pin 7 (GND), and Pin 8 (VOUT); Pins 1 and 5–8 are internal connections and must remain unconnected. The package is optimized for automated assembly and meets automotive mechanical reliability requirements.
MPXH6400AC6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.335", 8.50mm Width), Top Port
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- Industrial Automation
- Pressure Type:
- Absolute
- Operating Pressure:
- 2.9PSI ~ 58.02PSI (20kPa ~ 400kPa)
- Output Type:
- Analog Voltage
- Output:
- 0.2 V ~ 4.8 V
- Accuracy:
- ±1.5%
- Voltage - Supply:
- 4.64V ~ 5.36V
- Port Size:
- Male - 0.13" (3.3mm) Tube
- Port Style:
- Barbless
- Features:
- Temperature Compensated
- Termination Style:
- Gull Wing
- Maximum Pressure:
- 232.06PSI (1600kPa)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
MPXH6400AC6U FAQ
1.How can I place an order for MPXH6400AC6U through Aetrix?
Please submit a Request for Quotation (RFQ) for MPXH6400AC6U 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 MPXH6400AC6U reliable?
The price and inventory of MPXH6400AC6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPXH6400AC6U is usually 5 days.
3.What payment methods are accepted for MPXH6400AC6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPXH6400AC6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPXH6400AC6U?
MPXH6400AC6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPXH6400AC6U 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 MPXH6400AC6U?
For technical support, including MPXH6400AC6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPXH6400AC6U requirements.
6.How does Aetrix verify that MPXH6400AC6U is sourced from the original manufacturer or authorized distributors?
All MPXH6400AC6U 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 MPXH6400AC6U meets industry standards.
7.What is the process for return or replacement of MPXH6400AC6U?
All MPXH6400AC6U units undergo pre-shipment inspection (PSI). If there is an issue with MPXH6400AC6U, 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 MPXH6400AC6U part is unused and in its original packaging.
Return procedure for MPXH6400AC6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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