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Melexis Technologies NV MLX90817LXE-DBG-012-SP
- Part No.:
- MLX90817LXE-DBG-012-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Pressure Sensors, Transducers
- Package:
- 14-BFDFN Exposed Pad
- Datasheet:
-
MLX90817LXE-DBG-012-SP.pdf
- Description:
- SENSOR 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
MLX90817LXE-DBG-012-SP from Melexis is an automotive-grade absolute pressure sensor IC with integrated MEMS, 16-bit microcontroller, analog front end, and temperature compensation. It delivers ratiometric analog output (0.4 V to 4.65 V) over a 0.2–3 bar absolute pressure range, operates from −40°C to +150°C, and features factory-calibrated transfer characteristics with ±33 mBar total pressure accuracy. It is used in turbo manifold air pressure sensing for engine control units.
For engineers reviewing the MLX90817LXE-DBG-012-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin definitions, confirmed automotive diagnostic capabilities (broken track, clamping, internal fault detection), and real-world application constraints including EMC robustness, burst pressure rating (15 bar), and programmable filter settings (PFLT/SSF).
Technical Context
The MLX90817LXE-DBG-012-SP implements a piezoresistive Wheatstone bridge sensing element bonded to a vacuum cavity, with signal conditioning performed by a 16-bit ADC and DSP-based 16-bit microcontroller. Its analog front end includes chopper-stabilized instrumentation and differential amplifiers with programmable gain (Gst1 = 4.49–10.6 V/V, Gst2 = −1.25 or −3.5 V/V, Gst3 = 1.6–6.4 V/V) and coarse offset DACs.
Diagnostics include active broken-track detection on supply/ground lines, configurable clamping levels (0–5 %Vdd low, 50–100 %Vdd high), and multiple internal fault flags (overvoltage, under-voltage, overpressure). The device supports EEPROM-programmable pressure linearization, temperature compensation up to third-order, and dual digital filters: PFLT (first-order LPF, 0–9 depth) and SSF (small-signal bypass filter).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 0.2 to 3 bar absolute - defines full-scale operating window for turbo manifold and LPG/CNG injector applications |
| Analog Output Range | 0.4 V to 4.65 V ratiometric - scales linearly with supply voltage (4.5–5.5 V), enabling direct ADC interfacing without external scaling |
| Pressure Accuracy | ±33 mBar total error - includes initial offset, gain, linearity, and temperature drift across −40°C to +150°C |
| Operating Temperature | −40°C to +150°C - qualified for under-hood automotive environments with minimal thermal drift |
| Supply Voltage | 4.5 V to 5.5 V nominal - supports standard 5 V automotive rail with ±10% tolerance and 18 V overvoltage protection |
| Response Time | 0.93 ms (PFLT = 0) - time to reach 90% of final output after pressure step; programmable up to 203.8 ms for noise suppression |
| Burst Pressure | 15 bar at room temperature - mechanical safety margin beyond rated 3 bar full scale, critical for turbocharged systems |
Pinout & Package
MLX90817LXE-DBG-012-SP is housed in a rugged 4×5 mm DFN14 package (JEDEC MO-229, variant XE) with wettable flanks for automated optical inspection. The package features exposed thermal pad (pin 14 ground connection) and top-side marking including ASIC lot traceability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5 | Test pin | Factory programming and diagnostics interface; not intended for user connection in final design |
| 7 | Supply input (VDD) | Primary power input with integrated overvoltage (18 V) and reverse voltage (−14 V) protection |
| 8 | Analog output (VANA) | Ratiometric voltage output; actively driven to rail during fault conditions (e.g., open GND) |
| 10, 14 | Ground (GND) | Power and signal reference; pin 14 connects to exposed thermal pad for thermal dissipation |
| 2, 4, 6, 9, 11, 12, 13 | Not Connected | No internal connection; must be left floating or tied to GND per PCB layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Integrated System-in-Package | Combines MEMS sensor, analog front end, 16-bit microcontroller, EEPROM, temperature sensor, and voltage regulators - eliminates external calibration components and reduces BOM count |
| Automotive Diagnostics | Real-time broken-track detection on VDD/GND, programmable clamping (0–5 V), and internal fault reporting - meets ISO 26262 ASIL-B readiness requirements |
| Programmable Filtering | PFLT (0–9) and SSF enable trade-off between response time (0.93–203.8 ms) and output noise (2 mVrms BW ≤ 50 kHz) - adaptable to dynamic vs. steady-state pressure monitoring |
| Factory Calibration | EEPROM-stored pressure transfer curve (P1=0.2 bar, P2=3 bar, O1=0.4 V, O2=4.65 V), temperature compensation coefficients, and filter defaults - eliminates field calibration |
| Harsh Environment Robustness | 15 bar burst pressure, −40°C to +150°C operation, and EMC-hardened architecture - validated for turbocharger, exhaust gas recirculation, and fuel injection systems |
Applications
| Turbo Manifold Air Pressure Sensing | LPG/CNG Injector Pressure Monitoring |
|---|---|
Use Scenario: Real-time measurement of intake manifold pressure in turbocharged gasoline engines for boost control and air-fuel ratio calculation. IC Role / Device Role / Timing Role: Primary absolute pressure transducer delivering ratiometric analog output synchronized to ECU sampling clock (200 µs update rate). Use Value: Enables closed-loop boost pressure regulation with ±33 mBar accuracy across full temperature range, reducing emissions and improving transient throttle response. | Use Scenario: Monitoring fuel rail pressure in liquefied petroleum gas or compressed natural gas direct injection systems. IC Role / Device Role / Timing Role: High-reliability pressure interface with diagnostic flagging for open-circuit or short-circuit faults on supply/output lines. Use Value: Supports fail-safe fuel delivery via clamped output (0–5 V) and broken-track detection, meeting ASIL-B functional safety requirements. |
| Engine Control Unit (ECU) Pressure Input | Aftertreatment System Pressure Feedback |
Use Scenario: Providing primary pressure input to automotive engine control units for load estimation, knock control, and torque management. IC Role / Device Role / Timing Role: Analog sensor with 16-bit effective resolution and 0.93 ms response (PFLT=0) - compatible with standard 10–12 bit ECU ADCs. Use Value: Delivers stable, temperature-compensated signal without external signal conditioning, reducing ECU hardware complexity and calibration effort. | Use Scenario: Measuring differential pressure across diesel particulate filters (DPF) or selective catalytic reduction (SCR) catalysts to trigger regeneration cycles. IC Role / Device Role / Timing Role: Absolute pressure reference for differential calculations; uses internal temperature sensor for thermal drift correction. Use Value: Maintains ±33 mBar accuracy over 150,000 km lifetime under thermal cycling, ensuring reliable DPF soot loading estimation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPX5700AC6U | 700 kPa range (0–700 kPa), 0.2–4.8 V output, no integrated microcontroller or diagnostics | Lacks programmable filtering, temperature compensation, and automotive fault diagnostics | Requires external compensation circuitry and MCU-based linearization; suitable only for non-safety-critical industrial use |
| SSM2205CZ-REEL7 | 0.2–3 bar range, 0.5–4.5 V output, no EEPROM, no diagnostics, 12-bit effective resolution | Lower accuracy (±50 mBar), no clamping or broken-track detection, limited temperature range (−40°C to +125°C) | Cost-optimized alternative where ASIL-B compliance and long-term drift stability are not required |
Compared with MPX5700AC6U and SSM2205CZ-REEL7, the MLX90817LXE-DBG-012-SP provides higher integration (on-chip DSP, EEPROM, diagnostics), tighter accuracy (±33 mBar vs. ±50–70 mBar), and full automotive qualification - reducing system-level validation effort and enabling single-chip solutions for ASIL-B pressure sensing.
Availability
MLX90817LXE-DBG-012-SP is available at Aetrix Electronics and suitable for turbo manifold air pressure sensing, LPG/CNG injector monitoring, and aftertreatment system pressure feedback requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for MLX90817LXE-DBG-012-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 ISO/TS 16949 certification and extensive AEC-Q100 qualification experience.
The MLX90817 product line was designed specifically for high-accuracy, high-reliability absolute pressure measurement in harsh automotive environments - targeting engine management, turbocharging, and alternative fuel systems where long-term stability and diagnostic coverage are mandatory.
FAQ
What is the calibrated pressure range and output voltage span for MLX90817LXE-DBG-012-SP?
The MLX90817LXE-DBG-012-SP is factory calibrated for a 0.2–3 bar absolute pressure range, producing a ratiometric analog output spanning 0.4 V to 4.65 V at nominal 5 V supply. This transfer function is stored in on-chip EEPROM and remains stable across −40°C to +150°C, with ±33 mBar total pressure accuracy including temperature effects. The MLX90817LXE-DBG-012-SP does not require field recalibration under normal operating conditions.
Does MLX90817LXE-DBG-012-SP support diagnostic functions, and how are they implemented?
Yes, MLX90817LXE-DBG-012-SP integrates multiple automotive diagnostics: broken-track detection on VDD and GND lines, programmable output clamping (0–5 V), and internal fault reporting for overvoltage, under-voltage, and overpressure events. These are enabled via EEPROM configuration and reported through analog output rail-driving behavior or diagnostic pins. The MLX90817LXE-DBG-012-SP meets ISO 26262 requirements for ASIL-B ready pressure sensing without external supervision circuitry.
What is the response time of MLX90817LXE-DBG-012-SP, and can it be adjusted?
The MLX90817LXE-DBG-012-SP has a base response time of 0.93 ms (time to reach 90% of final value after pressure step) when PFLT = 0 and SSF disabled. Both PFLT (programmable first-order LPF, settings 0–9) and SSF (small-signal digital filter) can be configured via EEPROM to extend response time up to 203.8 ms for noise-sensitive applications. The MLX90817LXE-DBG-012-SP maintains 200 µs pressure data update rate regardless of filter setting.
What package type and pin configuration does MLX90817LXE-DBG-012-SP use?
MLX90817LXE-DBG-012-SP uses a 4×5 mm DFN14 package (JEDEC MO-229 variant XE) with wettable flanks and an exposed thermal pad. It has 14 terminals: pins 1/3/5 are test-only, pin 7 is VDD, pin 8 is analog output, pins 10/14 are GND (with pin 14 connected to thermal pad), and pins 2/4/6/9/11/12/13 are NC. The MLX90817LXE-DBG-012-SP requires strict adherence to Melexis' land pattern (documented in datasheet page 20) for thermal and solder joint reliability.
How is temperature compensation handled in MLX90817LXE-DBG-012-SP?
MLX90817LXE-DBG-012-SP performs full digital temperature compensation using an on-die temperature sensor and 16-bit microcontroller. Compensation coefficients for offset (O0–O3) and gain (G0–G3) are stored in EEPROM, supporting up to third-order polynomial correction. Linearization parameters (L0, L1) correct for nonlinearity independent of or with first-order temperature dependency. The MLX90817LXE-DBG-012-SP achieves ±33 mBar accuracy across −40°C to +150°C without external components.
MLX90817LXE-DBG-012-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 14-BFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Board Mount
- Pressure Type:
- Absolute
- Operating Pressure:
- -
- Output Type:
- Analog Voltage
- Output:
- -
- Accuracy:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Amplified Output, Temperature Compensated
- Termination Style:
- SMD (SMT) Tab
- Maximum Pressure:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DFN (4x5)
MLX90817LXE-DBG-012-SP FAQ
1.How can I place an order for MLX90817LXE-DBG-012-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90817LXE-DBG-012-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 MLX90817LXE-DBG-012-SP reliable?
The price and inventory of MLX90817LXE-DBG-012-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90817LXE-DBG-012-SP is usually 5 days.
3.What payment methods are accepted for MLX90817LXE-DBG-012-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90817LXE-DBG-012-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90817LXE-DBG-012-SP?
MLX90817LXE-DBG-012-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90817LXE-DBG-012-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 MLX90817LXE-DBG-012-SP?
For technical support, including MLX90817LXE-DBG-012-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90817LXE-DBG-012-SP requirements.
6.How does Aetrix verify that MLX90817LXE-DBG-012-SP is sourced from the original manufacturer or authorized distributors?
All MLX90817LXE-DBG-012-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 MLX90817LXE-DBG-012-SP meets industry standards.
7.What is the process for return or replacement of MLX90817LXE-DBG-012-SP?
All MLX90817LXE-DBG-012-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90817LXE-DBG-012-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 MLX90817LXE-DBG-012-SP part is unused and in its original packaging.
Return procedure for MLX90817LXE-DBG-012-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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