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Melexis Technologies NV MLX90825GXP-DAD-500-SP
- Part No.:
- MLX90825GXP-DAD-500-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Pressure Sensors, Transducers
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90825GXP-DAD-500-SP.pdf
- Description:
- RELATIVE PRESSURE SENSOR WITH SE
- Quantity:
- Payment:
- Shipping:
Inventory:4,373
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Product details
Overview
MLX90825GXP-DAD-500-SP from Melexis is a standalone relative pressure sensor IC 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, features AEC-Q100/AEC-Q103 qualification, ASIL B SEooC compliance per ISO 26262, and operates with 4.5–5.5 V supply at 12 mA typical current draw.
For engineers reviewing the MLX90825GXP-DAD-500-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SENT/UART interface behavior, pressure transfer curve details (–0.2 to 0.8 bar), diagnostic configurability, and OEM-grade EMC validation - all critical for safety-critical engine management system integration.
Technical Context
The MLX90825GXP-DAD-500-SP implements a MEMS diaphragm with piezoresistive Wheatstone bridge, analog front-end filtering, and a 16-bit DSP-based interface IC performing real-time temperature compensation, pressure linearization, and clamping. Its slave-mode operation disables SENT output and enables UART transmission of calibrated pressure data.
It integrates passive components (C1=100nF, C2=10nF, C3=2.2nF, C4=100nF) within the SMP7 package for EMC robustness and supports external NTC thermistor input (disabled by default), with programmable diagnostics including over/under-voltage detection (4.25–4.8 V / 5.2–5.75 V thresholds) and pressure out-of-range reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | –0.2 to 0.8 bar relative pressure; enables crankcase vacuum and positive vapor pressure sensing in one device. |
| Output Interface | UART output (slave mode); replaces SENT for point-to-point host communication without protocol arbitration overhead. |
| Accuracy | ±0.5% FS lifetime accuracy; ensures long-term stability in harsh under-hood environments without recalibration. |
| Supply Voltage | 4.5–5.5 V nominal; supports automotive battery transients with ±40 V over/under-voltage protection on supply and output pins. |
| Operating Temp | –40°C to 160°C continuous; extended to 170°C for ≤10 min durations, matching turbocharged engine bay thermal profiles. |
| Diagnostics | Configurable over/under-voltage, output out-of-range, and pressure fault flags; enables ASIL B-compliant failure response. |
| EMC Validation | Validated per leading OEM EMC standards; eliminates need for external filtering in module-level designs. |
Pinout & Package
SMP7 package: 7-pin surface-mount, PCB-less design with molded ridges for direct glue-based pressure sealing; no solder reflow required for media isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | UART output | Transmits calibrated pressure data via UART protocol; replaces SENT output in slave configuration. |
| 2 | Ground (GND) | Reference return path for supply, UART, and internal circuitry; shared low-impedance node for noise immunity. |
| 3 | Supply input (VDD) | 4.5–5.5 V power input with ±40 V transient tolerance; powers MEMS, DSP, and UART driver. |
| 4 | NTC input | Analog input for external NTC thermistor; disabled by default but configurable for dual-parameter sensing. |
| 5–7 | Test pins | Factory programming and test access points; not intended for end-user connection or signal routing. |
Key Features
| Feature | Design Value |
|---|---|
| ASIL B SEooC development | Complies with ISO 26262 requirements for safety elements out of context, enabling reuse in ASIL B systems without full requalification. |
| Integrated passive components | On-package C1/C2/C3/C4 eliminate external BOM items and layout dependencies, improving EMC consistency across production lots. |
| Factory-calibrated transfer curve | Pre-programmed –0.2 to 0.8 bar pressure span with 193–3896 LSB output range; reduces calibration labor in final assembly. |
| Programmable diagnostics | EEPROM-configurable voltage and pressure fault thresholds allow tailoring to specific ECU monitoring logic and fail-safe strategies. |
| Harsh media resistance | Validated against halogens and acids; suitable for direct exposure to fuel vapors and crankcase blow-by gases without encapsulation. |
Applications
| Fuel Vapor Pressure Monitoring | Crankcase Ventilation Monitoring |
|---|---|
|
Use Scenario: Real-time measurement of evaporative emissions system pressure during purge cycles and leak detection. IC Role / Device Role / Timing Role: Relative pressure sensor providing UART-streamed pressure values to engine control unit for OBD-II compliance testing. Use Value: Enables precise 0.5 mbar resolution pressure tracking across –0.2 to 0.8 bar range, supporting EPA Tier 3 and Euro 6d leak detection thresholds. |
Use Scenario: Continuous monitoring of crankcase pressure buildup in turbocharged gasoline direct injection engines. IC Role / Device Role / Timing Role: Slave-mode pressure transducer feeding UART data to main ECU for PCV valve actuation timing and oil mist separation control. Use Value: Delivers stable output up to 160°C ambient with ±0.5% FS accuracy, preventing false-positive blow-by alarms during high-load operation. |
| Engine Oil Filter Monitoring | Brake Booster Vacuum Sensing |
|
Use Scenario: Differential pressure tracking across oil filter media to trigger maintenance alerts based on clogging-induced ΔP rise. IC Role / Device Role / Timing Role: Standalone pressure node transmitting UART pressure updates every SENT frame (~0.528 ms) for real-time filter health assessment. Use Value: Leverages factory-calibrated clamping (LCL=1 LSB, HCL=4088 LSB) to maintain valid output even during rapid pressure surges during cold starts. |
Use Scenario: Absolute vacuum level measurement in brake booster reservoirs to support ADAS emergency braking assist algorithms. IC Role / Device Role / Timing Role: Relative pressure sensor referenced to atmosphere, delivering UART pressure values synchronized to ECU control loop timing. Use Value: Achieves <3 ms pressure response time (90% settled in 3 SENT frames), enabling sub-50 ms brake assist activation latency. |
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-300-RE | Standalone variant with SENT output; identical pressure range (–0.2 to 0.8 bar) and accuracy, but lacks UART interface. | Used where host ECU has SENT receiver only; requires SENT-compatible signal conditioning and decoding logic. | Select when SENT bus architecture is already deployed and UART integration is not feasible. |
| MLX90825GXP-DAD-504-RE | Slave variant with extended pressure range (–0.3 to 1.0 bar); same UART interface, EEPROM programmability, and ASIL B SEooC status. | Required for higher-delta applications like turbocharger boost control or enhanced crankcase monitoring with wider dynamic range. | Select when system pressure excursions exceed 0.8 bar and require headroom for transient spikes. |
Compared with MLX90825GXP-DAD-300-RE, the MLX90825GXP-DAD-500-SP trades SENT compatibility for deterministic UART timing and simplified host-side parsing; compared with MLX90825GXP-DAD-504-RE, it offers tighter cost and footprint optimization for mid-range crankcase and vapor pressure use cases where 1.0 bar range is unnecessary.
Availability
MLX90825GXP-DAD-500-SP is available at Aetrix Electronics and suitable for automotive engine management, emissions control, and powertrain safety systems requiring stable component supply, AEC qualification, and ASIL-compliant sourcing.
Supply support for MLX90825GXP-DAD-500-SP 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, infrared, and pressure sensors for automotive and industrial markets, with design centers in Europe and manufacturing partnerships globally.
The MLX90825 product line targets high-reliability automotive pressure sensing, emphasizing MEMS integration, OEM-grade EMC robustness, and functional safety compliance for engine, transmission, and emissions subsystems.
FAQ
What output protocol does the MLX90825GXP-DAD-500-SP use?
The MLX90825GXP-DAD-500-SP uses UART output exclusively - it is configured as a slave device and does not support SENT. This UART interface transmits calibrated pressure data directly to a host microcontroller, eliminating SENT decoding complexity while maintaining deterministic timing and error resilience. The MLX90825GXP-DAD-500-SP UART operates at standard automotive-compatible voltage levels and supports configurable baud rates via PTC04 programming.
Is the MLX90825GXP-DAD-500-SP qualified for automotive use?
Yes, the MLX90825GXP-DAD-500-SP is qualified to AEC-Q100 Grade 0 (–40°C to +160°C) and AEC-Q103-002 for pressure sensors. It is also developed as an ASIL B Safety Element out of Context per ISO 26262, enabling its integration into ASIL B safety mechanisms without requiring full system-level requalification. The MLX90825GXP-DAD-500-SP meets stringent OEM EMC requirements and exhibits proven resistance to halogens and acidic media found in engine compartments.
What is the pressure measurement range of the MLX90825GXP-DAD-500-SP?
The MLX90825GXP-DAD-500-SP is factory calibrated for a relative pressure range of –0.2 bar to +0.8 bar, corresponding to vacuum and positive pressure conditions typical in crankcase ventilation and fuel vapor systems. Its transfer curve outputs pressure as a calibrated value within a defined LSB range, and the MLX90825GXP-DAD-500-SP maintains ±0.5% full-scale accuracy across its entire operating temperature range without recalibration.
Can the MLX90825GXP-DAD-500-SP measure temperature?
The MLX90825GXP-DAD-500-SP supports optional external NTC thermistor input on Pin 4, though it is disabled by default. When enabled via PTC04 programming, it performs full linearization and calibration of the NTC signal using its integrated 16-bit DSP. The MLX90825GXP-DAD-500-SP also measures internal die temperature using a PTAT reference, with ±10°C accuracy, and can transmit both values via UART depending on configuration.
Does the MLX90825GXP-DAD-500-SP require external passive components?
No, the MLX90825GXP-DAD-500-SP integrates all required passive components - including C1 (100 nF), C2 (10 nF), C3 (2.2 nF), and C4 (100 nF) - within its SMP7 package. This eliminates the need for external decoupling or filtering components, simplifies PCB layout, and ensures consistent EMC performance across production units. The MLX90825GXP-DAD-500-SP is validated to leading OEM EMC standards without additional board-level filtering.
MLX90825GXP-DAD-500-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 4-SIP Module
- Packaging:
- Bag
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- Differential
- Operating Pressure:
- 2.9PSI ~ 11.6PSI (20kPa ~ 80kPa)
- 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-4
MLX90825GXP-DAD-500-SP FAQ
1.How can I place an order for MLX90825GXP-DAD-500-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90825GXP-DAD-500-SP 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-500-SP reliable?
The price and inventory of MLX90825GXP-DAD-500-SP 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-500-SP is usually 5 days.
3.What payment methods are accepted for MLX90825GXP-DAD-500-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90825GXP-DAD-500-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90825GXP-DAD-500-SP?
MLX90825GXP-DAD-500-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90825GXP-DAD-500-SP 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-500-SP?
For technical support, including MLX90825GXP-DAD-500-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90825GXP-DAD-500-SP requirements.
6.How does Aetrix verify that MLX90825GXP-DAD-500-SP is sourced from the original manufacturer or authorized distributors?
All MLX90825GXP-DAD-500-SP 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-500-SP meets industry standards.
7.What is the process for return or replacement of MLX90825GXP-DAD-500-SP?
All MLX90825GXP-DAD-500-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90825GXP-DAD-500-SP, 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-500-SP part is unused and in its original packaging.
Return procedure for MLX90825GXP-DAD-500-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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