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Melexis Technologies NV MLX90825GXP-DAD-504-RE
- Part No.:
- MLX90825GXP-DAD-504-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Pressure Sensors, Transducers
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90825GXP-DAD-504-RE.pdf
- Description:
- -0.3 TO 1.0BAR?RELATIVE PRESSURE
- Quantity:
- Payment:
- Shipping:
Inventory:1,514
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Product details
Overview
MLX90825GXP-DAD-504-RE from Melexis is a relative pressure sensor with UART digital output, designed for automotive crankcase ventilation and fuel vapor pressure monitoring. It delivers ±0.5% full-scale lifetime accuracy over –40°C to 160°C, supports –0.3 to 1 bar pressure range, and integrates MEMS sensing, DSP signal processing, and passive components in an SMP7 package qualified to AEC-Q100 and AEC-Q103-002.
For engineers reviewing the MLX90825GXP-DAD-504-RE datasheet, pinout, applications, or equivalent options, this page provides verified functional role, UART interface behavior, ASIL B SEooC safety compliance, NTC temperature linearization capability, and exact SMP7 pin mapping per variant configuration.
Technical Context
The MLX90825GXP-DAD-504-RE operates as a slave device in master–slave pressure systems, transmitting calibrated pressure data via UART instead of SENT. Its internal 16-bit microcontroller performs real-time temperature compensation using third-order polynomial coefficients (O0–O3, G0–G3) stored in EEPROM, enabling ±6.5 mbar pressure accuracy across its –0.3 to 1 bar span.
It features dual diagnostics: programmable over/under-voltage detection (4.25–4.8 V / 5.2–5.75 V), clamping at 1 LSB low / 4088 LSB high, and configurable UART frame timing. Unlike standalone variants, it lacks SENT output but retains NTC input for external thermistor-based temperature linearization, disabled by default but field-programmable via PTC04 tool.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | –0.3 to 1 bar relative pressure: enables crankcase vacuum and positive vapor pressure monitoring in one sensor. |
| Output Interface | UART protocol: allows direct connection to microcontrollers without SENT decoder hardware or additional level-shifting circuitry. |
| Accuracy | ±6.5 mbar typical pressure accuracy: meets OEM requirements for filter clogging and leak detection diagnostics. |
| Temperature Range | –40°C to 160°C operating: validated for under-hood placement near engine blocks and turbochargers. |
| Supply Voltage | 4.5–5.5 V nominal, ±40 V fault tolerance: withstands load dump and reverse battery conditions in 12 V automotive systems. |
| EMC Compliance | Validated to leading OEM EMC standards: eliminates need for external filtering components in module-level design. |
| Safety Certification | ASIL B SEooC per ISO 26262: supports integration into safety-critical powertrain and emissions control subsystems. |
Pinout & Package
SMP7 package: 7-pin surface-mount plastic housing with ridges for glue-based pressure sealing; no PCB required; optimized for harsh-media environments including halogens and acids.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | UART output | Transmits pressure data frames; open-drain compatible with 10–55 kΩ pull-up to VDD per SAE J2716 UART timing. |
| 2 | Ground (GND) | Common reference for supply, UART, and NTC circuits; must be low-impedance to ensure EMC robustness. |
| 3 | Supply input (VDD) | Accepts 4.5–5.5 V; includes ±40 V over/under-voltage protection; powers MEMS, ASIC, and internal regulators. |
| 4 | NTC input | Analog input for external thermistor; supports 20 Ω–1 MΩ range; enables factory-calibrated linearization without reprogramming. |
| 5–7 | Test pins | Reserved for factory programming and test; not connected in end-user applications; no external routing required. |
Key Features
| Feature | Design Value |
|---|---|
| All-in-one MEMS + interface + passives | Eliminates external capacitors and resistors-C1/C2/C3/C4/R1/R2 integrated per Figure 2, reducing BOM count and layout area. |
| Factory-calibrated & field-programmable | EEPROM stores pressure transfer curve and NTC coefficients; reconfigurable via PTC04 tool without recalibration fixtures. |
| Harsh-media resistant package | Validated against halogens and acids per OEM test specs; suitable for direct exposure to fuel vapors and crankcase gases. |
| Configurable diagnostics | Enables/disables OV/UV detection, output clamping, and diagnostic status bits via EEPROM settings for system-specific fault handling. |
| PCB-less mechanical integration | Ridge-equipped SMP7 housing allows adhesive sealing directly to gasketed ports-no soldering or flex circuit needed. |
Applications
| Fuel Vapor Pressure Monitoring | Crankcase Ventilation Pressure Sensing |
|---|---|
Use Scenario: Real-time measurement of evaporative emissions system pressure during OBD-II leak testing and refueling events. IC Role / Device Role / Timing Role: Slave node providing UART-streamed pressure data to ECU for closed-loop vapor management and diagnostic flagging. Use Value: ±6.5 mbar accuracy ensures reliable detection of 0.5 mm leak holes per EPA Tier 3 requirements without oversampling. | Use Scenario: Continuous monitoring of positive/negative pressure in engine crankcase to detect PCV valve failure or blow-by gas accumulation. IC Role / Device Role / Timing Role: UART-output slave sensor synchronized with master pressure node for differential analysis in multi-sensor architectures. Use Value: –0.3 to 1 bar range covers both vacuum (idle) and boost-referenced positive pressure (turbo operation) in single device. |
| Engine Oil Filter Clogging Detection | Exhaust Gas Recirculation (EGR) Differential Pressure |
Use Scenario: Detecting ΔP across oil filter media to trigger maintenance alerts before bypass valve activation. IC Role / Device Role / Timing Role: Standalone pressure node reporting absolute pressure upstream of filter; UART output enables direct MCU polling. Use Value: 160°C rating permits mounting on engine block near oil gallery-no remote sensing or tubing required. | Use Scenario: Measuring pressure difference between EGR inlet and outlet to calculate flow rate and detect soot buildup. IC Role / Device Role / Timing Role: Slave in master–slave pair where master reads upstream pressure and slave reads downstream pressure via UART. Use Value: SMP7 package's media resistance prevents clogging or corrosion from acidic exhaust condensates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar relative pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90825GXP-DAD-404-RE | Same SMP7 package and –0.3 to 1 bar range, but configured as master with SENT output instead of UART. | Used in systems requiring SENT bus integration and fast-channel diagnostics; not compatible with UART-only host interfaces. | Select when SENT protocol compatibility and master-role arbitration are required; requires SENT decoder hardware. |
| MPXV7025GP | Analog ratiometric output (0.2–4.7 V), no integrated UART or diagnostics; requires external ADC and microcontroller firmware. | Targeted at cost-sensitive non-AEC-Q100 applications; lacks ASIL B development assurance and harsh-media qualification. | Select only for legacy analog designs or non-automotive industrial use; adds BOM and validation burden. |
Compared with MLX90825GXP-DAD-404-RE and MPXV7025GP, the MLX90825GXP-DAD-504-RE uniquely combines UART digital output, AEC-Q103-002 media resistance, and ASIL B SEooC compliance-enabling drop-in replacement in UART-based ECU architectures without sacrificing automotive qualification or diagnostic depth.
Availability
MLX90825GXP-DAD-504-RE is available at Aetrix Electronics and suitable for automotive crankcase monitoring, fuel vapor pressure sensing, and EGR differential pressure applications requiring stable component supply, long-term lifecycle support, and AEC-Q100/103-compliant sourcing.
Supply support for MLX90825GXP-DAD-504-RE 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
Melexis is a Belgian semiconductor company specializing in magnetic, pressure, and infrared sensors for automotive and industrial markets, with design centers in Europe and Asia.
The MLX90825 product line targets high-reliability automotive pressure sensing-including emissions control, powertrain health monitoring, and safety-critical fluid systems-with focus on integrated signal conditioning, OEM-grade EMC, and functional safety compliance.
FAQ
What communication protocol does the MLX90825GXP-DAD-504-RE use?
The MLX90825GXP-DAD-504-RE uses UART protocol for digital output, not SENT-making it a slave device in master–slave configurations. It transmits calibrated pressure data in configurable UART frames, eliminating the need for SENT decoder hardware. This UART interface is electrically compatible with standard 5 V microcontroller UART receivers and supports programmable baud rates via EEPROM settings. The MLX90825GXP-DAD-504-RE does not implement SENT output.
Is the MLX90825GXP-DAD-504-RE qualified for automotive use?
Yes, the MLX90825GXP-DAD-504-RE is qualified to AEC-Q100 Grade 0 (–40°C to +160°C) and AEC-Q103-002 for harsh-media resistance. It is developed as an ASIL B Safety Element out of Context per ISO 26262, with full documentation available for integration into safety-managed systems. Its SMP7 package is validated against halogen and acid exposure, meeting OEM requirements for under-hood fuel and crankcase applications.
Can the MLX90825GXP-DAD-504-RE measure temperature with an external NTC?
Yes, the MLX90825GXP-DAD-504-RE includes a dedicated NTC input (Pin 4) supporting 20 Ω–1 MΩ thermistors. Though disabled by default, NTC functionality can be enabled and calibrated via the PTC04 programming tool using custom coefficients-or with the default TDK G1551-series characteristic in Table 13. Linearized temperature output is transmitted alongside pressure data in UART frames, with ±0.75°C center-point accuracy.
What is the pressure accuracy specification for the MLX90825GXP-DAD-504-RE?
The MLX90825GXP-DAD-504-RE delivers ±6.5 mbar typical pressure accuracy over its –0.3 to 1 bar range, corresponding to ±0.5% full-scale accuracy. This value is specified at center temperature (25°C) and includes contributions from offset, gain, and linearity compensation implemented in the on-chip 16-bit DSP. Accuracy degrades to ±10 mbar at extended temperatures (–40°C and +160°C) per the Fe factor in Table 12.
Does the MLX90825GXP-DAD-504-RE require an external PCB?
No, the MLX90825GXP-DAD-504-RE uses a PCB-less SMP7 package with molded ridges for direct adhesive sealing to pressure ports. All passive components (C1–C4, R1–R2) are integrated inside the package per Figure 2 and Table 1, eliminating external filtering or biasing components. This design reduces assembly steps, improves EMC performance, and enables compact integration in space-constrained automotive modules.
MLX90825GXP-DAD-504-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 4-SIP Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- Differential
- Operating Pressure:
- -4.35PSI ~ 14.5PSI (-30kPa ~ 100kPa)
- Output Type:
- SENT
- Output:
- 12 b
- Accuracy:
- ±0.5%
- Voltage - Supply:
- 4.5V ~ 5.5V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Temperature Compensated
- Termination Style:
- -
- Maximum Pressure:
- 72.52PSI (500kPa)
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- SMP-7
MLX90825GXP-DAD-504-RE FAQ
1.How can I place an order for MLX90825GXP-DAD-504-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90825GXP-DAD-504-RE 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 MLX90825GXP-DAD-504-RE reliable?
The price and inventory of MLX90825GXP-DAD-504-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90825GXP-DAD-504-RE is usually 5 days.
3.What payment methods are accepted for MLX90825GXP-DAD-504-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90825GXP-DAD-504-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90825GXP-DAD-504-RE?
MLX90825GXP-DAD-504-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90825GXP-DAD-504-RE 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 MLX90825GXP-DAD-504-RE?
For technical support, including MLX90825GXP-DAD-504-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90825GXP-DAD-504-RE requirements.
6.How does Aetrix verify that MLX90825GXP-DAD-504-RE is sourced from the original manufacturer or authorized distributors?
All MLX90825GXP-DAD-504-RE 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 MLX90825GXP-DAD-504-RE meets industry standards.
7.What is the process for return or replacement of MLX90825GXP-DAD-504-RE?
All MLX90825GXP-DAD-504-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90825GXP-DAD-504-RE, 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 MLX90825GXP-DAD-504-RE part is unused and in its original packaging.
Return procedure for MLX90825GXP-DAD-504-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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