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Melexis Technologies NV MLX90809LXG-EAD-100-RE
- Part No.:
- MLX90809LXG-EAD-100-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Pressure Sensors, Transducers
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MLX90809LXG-EAD-100-RE.pdf
- Description:
- SENSOR 0.73PSID 12BIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,211
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Product details
Overview
MLX90809LXG-EAD-100-RE from Melexis is a factory-calibrated, integrated relative pressure sensor delivering SENT digital output with 0.05 to –1.2 bar pressure range, ±20 mBar pressure accuracy, and automotive-grade operation from –40°C to +150°C. It integrates MEMS sensing element, 16-bit microcontroller, DSP-based compensation, analog/digital regulators, and SENT driver in a single IC for vacuum and low-pressure measurement in engine intake, brake boost, and HVAC systems.
For engineers reviewing the MLX90809LXG-EAD-100-RE datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SENT-specific timing behavior, calibrated transfer function details, diagnostic configuration options, and automotive EMC performance metrics critical for functional safety–compliant system integration.
Technical Context
The MLX90809LXG-EAD-100-RE implements a piezoresistive silicon diaphragm with backside-exposed pressure port, coupled to a 16-bit microcontroller running DSP firmware for real-time temperature-compensated pressure linearization and programmable filtering. Its SENT output complies with SAE J2716 (Jan 2010), transmitting 12-bit pressure data plus status bits across four nibbles per frame.
It features dual diagnostics architecture: hardware-level broken-wire detection on supply/ground lines and software-configurable clamping (LCL = 1 LSB, HCL = 4088 LSB), overpressure/underpressure alerts, and EEPROM-programmable filter settings (SSF = 1, PFLT = 0 default). All signal conditioning, voltage regulation, and SENT driver circuitry are monolithically integrated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 0.05 to –1.2 bar relative - enables precise vacuum monitoring in brake assist and turbocharger control where atmospheric reference is required. |
| Output Format | SENT (SAE J2716) - delivers deterministic, noise-immune digital transmission with built-in CRC and status nibble for ECU-level fault isolation. |
| Accuracy | ±20 mBar over life and temperature - ensures stable calibration without field recalibration in harsh under-hood environments. |
| Response Time | 3–4 SENT frames - supports real-time closed-loop control loops requiring sub-10 ms latency for active vacuum management. |
| Operating Temp | –40°C to +150°C - qualified per AEC-Q100 Grade 0, enabling direct mounting on engine manifolds or brake modules. |
| Supply Voltage | 4.5 V to 5.5 V - ratiometric design maintains output stability across battery voltage fluctuations in 12 V automotive systems. |
| Burst Pressure | 5 bar - withstands transient overpressure events during cold-start or system fault conditions without mechanical failure. |
Pinout & Package
MLX90809LXG-EAD-100-RE uses a 16-pin SOIC package (body size 10.33 × 7.59 × 2.45 mm) with backside pressure port and exposed die attach pad for thermal and mechanical robustness in sealed automotive housings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | SENT Output | Differential SENT driver outputs - only one required; supports termination with 1.1 nF + 220 Ω + 1.1 nF CRC load per SAE J2716. |
| 3, 14 | Supply Input (VDD) | 5 V nominal input with ±0.5 V ratiometric tolerance - internal regulator stabilizes analog/digital domains; reverse voltage protected to –14 V. |
| 4, 13 | Test Pin | Factory programming and diagnostics interface - shorted to GND in SENT mode per application schematic Figure 5. |
| 5, 12 | Not Connected | No internal connection - must be left floating or grounded per layout guidelines to avoid parasitic coupling. |
| 6, 11 | Ground (GND) | Common return for analog/digital/Sent domains - dual pins reduce ground bounce in high-noise powertrain environments. |
| 7–10 | Analog Output | Disabled in EAD-100 variant - pins must be shorted to GND when SENT is active to prevent interference. |
Key Features
| Feature | Design Value |
|---|---|
| Backside-exposed MEMS diaphragm | Enables direct media contact with automotive fluids (brake fluid, oil, air) while maintaining >5 bar burst rating and long-term drift stability. |
| SENT protocol compliance (SAE J2716) | Delivers time-deterministic 12-bit pressure data with CRC, status nibble, and configurable frame rate - eliminates ADC sampling jitter in ECU interfaces. |
| Programmable diagnostics | Configurable low/high clamping (1–4088 LSB), broken-wire detection, and overpressure alerts stored in on-chip EEPROM for ASIL-B–aligned fault reporting. |
| Integrated 16-bit DSP compensation | Compensates for nonlinearity, thermal drift, and offset across –40°C to +150°C using factory-calibrated coefficients - no external lookup tables required. |
| Automotive EMC robustness | Optimized CMOS layout and on-chip protection circuits meet stringent OEM EMC requirements (e.g., ISO 11452-2/4) without external shielding. |
Applications
| Brake Vacuum Assist Monitoring | Engine Intake Manifold Pressure |
|---|---|
|
Use Scenario: Real-time vacuum level tracking in hydraulic brake boosters to detect leaks, pump degradation, or insufficient engine vacuum during idle-stop cycles. IC Role / Device Role / Timing Role: Primary SENT-based pressure transducer providing 12-bit vacuum data every 3–4 frames to ABS/ESC controller for adaptive brake assist activation. Use Value: Enables fail-safe brake assist deactivation before vacuum drops below 0.05 bar threshold, meeting ISO 26262 ASIL-B diagnostic coverage requirements. |
Use Scenario: Measuring absolute pressure differential between intake manifold and ambient air to calculate mass airflow for fuel injection and ignition timing control. IC Role / Device Role / Timing Role: High-accuracy relative pressure sensor feeding SENT data to ECU at ≤10 ms update intervals for closed-loop combustion optimization. Use Value: Delivers ±20 mBar accuracy across full temperature range, eliminating need for separate temperature compensation circuitry in intake systems. |
| HVAC Cabin Pressure Control | Seat Lumbar Support Actuation |
|
Use Scenario: Detecting cabin-to-ambient pressure differentials during automatic climate control to regulate blower speed and damper position for occupant comfort. IC Role / Device Role / Timing Role: Low-power SENT pressure node interfacing with body control module (BCM) via dedicated LIN or CAN sub-bus. Use Value: Backside-exposed package resists condensation and dust ingress in dash-mounted locations, ensuring 15+ year operational reliability. |
Use Scenario: Sensing user-applied force on lumbar support cushions to dynamically adjust pneumatic bladder pressure for ergonomic seating profiles. IC Role / Device Role / Timing Role: Miniaturized relative pressure transducer mounted directly on seat frame, delivering SENT feedback to seat ECU for real-time PID control. Use Value: 0.05 to –1.2 bar range matches human-force-induced vacuum levels; ±20 mBar accuracy enables <5 mmHg resolution for fine-tuned comfort tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar relative pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90809LXG-EAD-007-RE | Analog output (0.5–4.5 V), –1 bar range, 0.3–4.85 V clamping - lacks SENT protocol, requires external ADC and filtering. | Suitable for legacy ECU designs without SENT receivers; lower system cost but higher ECU processing overhead. | Select EAD-007-RE only if SENT interface is unavailable and analog signal chain already exists; not drop-in compatible with EAD-100-RE. |
| MPXV7025GP | Analog output (0.2–4.8 V), –25 to +25 kPa range, ±2% FSO accuracy - no diagnostics, no programmability, no automotive qualification. | Targeted at industrial vacuum gauges or consumer appliances; lacks AEC-Q100 qualification and embedded diagnostics. | MPXV7025GP may serve as a cost-sensitive prototyping option but requires full revalidation for automotive use due to missing fault detection and temperature range limits. |
Compared with MLX90809LXG-EAD-007-RE and MPXV7025GP, the MLX90809LXG-EAD-100-RE uniquely combines SENT digital output, ASIL-B–ready diagnostics, and factory-calibrated –1.2 bar vacuum range in a single AEC-Q100 qualified package - eliminating external signal conditioning and enabling direct ECU integration with minimal BOM impact.
Availability
MLX90809LXG-EAD-100-RE is available at Aetrix Electronics and suitable for brake vacuum assist monitoring, engine intake manifold pressure sensing, and HVAC cabin pressure control requiring stable component supply across automotive production lifecycles.
Supply support for MLX90809LXG-EAD-100-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, infrared, and pressure sensors for automotive and industrial markets, with ISO/TS 16949 and ISO 14001 certification.
The MLX90809 product line delivers integrated, programmable pressure sensing solutions targeting functional safety–compliant powertrain, chassis, and body electronics where high accuracy, diagnostics, and extended temperature operation are mandatory.
FAQ
What is the pressure range and output format of the MLX90809LXG-EAD-100-RE?
The MLX90809LXG-EAD-100-RE is configured for a relative pressure range of 0.05 to –1.2 bar and delivers output exclusively via SENT protocol (SAE J2716), with digital values spanning 193 to 3896 LSB. It does not support analog output - pins 7–10 must be shorted to ground in application layouts. This SENT-only configuration ensures deterministic timing and noise immunity in automotive ECUs.
How does the MLX90809LXG-EAD-100-RE handle diagnostics and fault reporting?
The MLX90809LXG-EAD-100-RE implements hardware-level broken-wire detection on supply and ground lines, plus software-configurable SENT frame status bits indicating clamping, overpressure, or underpressure events. Clamping thresholds are programmable (LCL = 1 LSB, HCL = 4088 LSB) and stored in on-chip EEPROM. These diagnostics meet ASIL-B requirements when integrated with appropriate ECU interpretation logic.
Is the MLX90809LXG-EAD-100-RE qualified for automotive use and what standards does it meet?
Yes, the MLX90809LXG-EAD-100-RE is AEC-Q100 Grade 0 qualified (–40°C to +150°C), with burst pressure rating of 5 bar and EMC performance validated per ISO 11452-2/4. It includes automotive diagnostic features such as clamping levels, broken-track detection, and internal fault monitoring - all factory-programmed and verified during final test.
Can the MLX90809LXG-EAD-100-RE be reprogrammed in-system or only at factory?
The MLX90809LXG-EAD-100-RE can be reprogrammed in-system using Melexis' PTC04 programming hardware and software, which supports custom pressure transfer curves, filter settings, and diagnostic thresholds. Reprogramming requires access to the TEST pin (pins 4 or 13) and is typically performed during end-of-line calibration - not intended for field updates.
What external components are required for reliable operation of the MLX90809LXG-EAD-100-RE in SENT mode?
In SENT mode, the MLX90809LXG-EAD-100-RE requires a 47 nF decoupling capacitor on the VDD line and a 2.2 nF capacitive load on the SENT output pin, per Figure 5 of the datasheet. Pins 4 and 13 (TEST) must be shorted to ground, and analog output pins (7–10) must also be grounded to prevent interference. No pull-up resistors are needed on SENT lines.
MLX90809LXG-EAD-100-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- Differential
- Operating Pressure:
- -17.4PSI ~ 0.73PSI (-120kPa ~ 5kPa)
- Output Type:
- SENT
- Output:
- 12 b
- Accuracy:
- ±1.5%
- Voltage - Supply:
- 4.5V ~ 5.5V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Amplified Output, Temperature Compensated
- Termination Style:
- Gull Wing
- Maximum Pressure:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MLX90809LXG-EAD-100-RE FAQ
1.How can I place an order for MLX90809LXG-EAD-100-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90809LXG-EAD-100-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 MLX90809LXG-EAD-100-RE reliable?
The price and inventory of MLX90809LXG-EAD-100-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90809LXG-EAD-100-RE is usually 5 days.
3.What payment methods are accepted for MLX90809LXG-EAD-100-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90809LXG-EAD-100-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90809LXG-EAD-100-RE?
MLX90809LXG-EAD-100-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90809LXG-EAD-100-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 MLX90809LXG-EAD-100-RE?
For technical support, including MLX90809LXG-EAD-100-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90809LXG-EAD-100-RE requirements.
6.How does Aetrix verify that MLX90809LXG-EAD-100-RE is sourced from the original manufacturer or authorized distributors?
All MLX90809LXG-EAD-100-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 MLX90809LXG-EAD-100-RE meets industry standards.
7.What is the process for return or replacement of MLX90809LXG-EAD-100-RE?
All MLX90809LXG-EAD-100-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90809LXG-EAD-100-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 MLX90809LXG-EAD-100-RE part is unused and in its original packaging.
Return procedure for MLX90809LXG-EAD-100-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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