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Melexis Technologies NV MLX90817LXE-DBH-008-RE
- Part No.:
- MLX90817LXE-DBH-008-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Pressure Sensors, Transducers
- Package:
- 14-BFDFN Exposed Pad
- Datasheet:
-
MLX90817LXE-DBH-008-RE.pdf
- Description:
- IC SENSOR PRESSURE ANALOG 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,262
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Product details
Overview
MLX90817LXE-DBH-008-RE from Melexis is an automotive-grade absolute pressure sensor IC with ratiometric analog output, integrated MEMS sensing element, 16-bit microcontroller, analog front end, and temperature compensation. It delivers 0.4 V to 4.65 V output over a 0.1–1.15 bar absolute pressure range and operates across –40°C to +150°C for manifold air pressure monitoring in turbocharged engines.
For engineers reviewing the MLX90817LXE-DBH-008-RE datasheet, pinout, applications, or equivalent options, this page provides verified functional specifications, calibrated transfer curve details, diagnostic behavior, PCB land pattern guidance, and automotive EMC performance data required for engine control unit (ECU) integration and ASIL-B–aligned system design.
Technical Context
The MLX90817LXE-DBH-008-RE implements a piezoresistive Wheatstone bridge on a silicon diaphragm with built-in vacuum reference, coupled to a 16-bit ADC and DSP-based 16-bit microcontroller for real-time temperature compensation and pressure linearization. Its analog front end includes programmable gain stages (Gst1 = 4.49–10.6 V/V, Gst2 = –1.25 or –3.5 V/V, Gst3 = 1.6–6.4 V/V) and chopper-stabilized instrumentation amplification.
Diagnostics include broken-track detection on supply/ground lines, clamping level programming (0.3 V low / 4.7 V high), and fault band activation via analog output rail driving. The device supports two digital filters: PFLT (programmable first-order LPF, response time 0.93–203.8 ms) and SSF (small-signal filter bypassed during fast transients).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 0.1 to 1.15 bar absolute - enables precise low-range intake manifold pressure measurement in naturally aspirated and low-boost turbo engines. |
| Analog Output Range | 0.4 V to 4.65 V ratiometric - scales linearly with supply voltage (4.5–5.5 V), ensuring stable signal integrity under ECU rail variation. |
| Output Accuracy | ±12.5 mbar full-scale - guaranteed over –40°C to +150°C, supporting ASIL-B functional safety requirements without external calibration. |
| Response Time | 0.93 ms (PFLT = 0) - meets fast transient detection needs for closed-loop boost control and knock mitigation algorithms. |
| Operating Temperature | –40°C to +150°C - qualified for under-hood placement adjacent to intake manifolds and turbochargers without derating. |
| Supply Voltage | 4.5 V to 5.5 V nominal - compatible with standard automotive 5 V regulators and tolerant of load-dump-induced ripple. |
| Bridge Sensitivity | 18 mV/V/bar - doubled vs. DBG variants, enabling higher resolution at low pressures for improved idle stability and cold-start air-fuel ratio control. |
Pinout & Package
MLX90817LXE-DBH-008-RE uses a rugged 4×5 mm DFN14 package (JEDEC MO-220, 14-pin, exposed thermal pad), optimized for automotive mechanical stress and thermal cycling. Pin 1 is marked by a dot; bottom-view orientation aligns with Figure 2 in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5 | Test pin | Factory programming and diagnostics access; not connected in end-user applications. |
| 2, 4, 6, 9, 11, 12, 13 | Not Connected | No internal connection; must remain unconnected on PCB to avoid parasitic coupling or ESD path disruption. |
| 7 | Supply input (VDD) | Primary power input; requires 47–100 nF decoupling capacitor placed ≤2 mm from pin for EMC robustness. |
| 8 | Analog output (VANA) | Ratiometric pressure output; supports 4.7 kΩ pull-up/down and 47–470 nF capacitive load per layout guidelines. |
| 10, 14 | Ground (GND) | Dual ground pins for low-impedance return path; both must be connected to solid thermal pad and chassis ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| System-in-package architecture | Integrates MEMS sensor, analog front end, 16-bit microcontroller, EEPROM, temperature sensor, and voltage regulators - eliminates external signal conditioning and reduces BOM count by ≥7 components. |
| Factory-calibrated transfer curve | Pre-programmed 0.1–1.15 bar → 0.4–4.65 V mapping stored in EEPROM - enables plug-and-play deployment without host MCU calibration routines. |
| Programmable clamping levels | Configurable low/high clamping (0.3 V / 4.7 V default) via EEPROM - allows safe fault signaling during overpressure or sensor failure without modifying hardware. |
| Automotive diagnostics suite | Detects broken track on VDD/GND, overvoltage (18 V), reverse voltage (–14 V), and internal faults - supports ISO 26262 diagnostic coverage up to ASIL-B. |
| EMC-hardened design | Optimized CMOS layout and on-chip protection deliver best-in-class automotive EMC immunity - validated per ISO 11452-2/4/8 and CISPR 25 Class 5. |
Applications
| Manifold Absolute Pressure (MAP) Sensing | Turbocharger Boost Control |
|---|---|
Use Scenario: Monitoring intake manifold pressure in gasoline direct injection (GDI) engines during transient throttle events and idle stabilization. IC Role / Device Role / Timing Role: Primary absolute pressure transducer feeding real-time data to ECU for air mass calculation and fuel injection timing correction. Use Value: ±12.5 mbar accuracy and 0.93 ms response enable <1% air-fuel ratio error at idle and <2% error during 200 ms throttle tip-in, improving emissions compliance. | Use Scenario: Closed-loop regulation of variable geometry turbocharger (VGT) vanes using real-time boost pressure feedback. IC Role / Device Role / Timing Role: High-speed analog pressure interface with deterministic latency for PID controller execution at 10 kHz loop rate. Use Value: Ratiometric 0.4–4.65 V output and 18 mV/V/bar sensitivity provide 12-bit effective resolution at 1.15 bar, reducing vane position jitter by 40% vs. legacy sensors. |
| LPG/CNG Fuel Injection Monitoring | Engine Start-Stop System Pressure Validation |
Use Scenario: Verifying regulated fuel rail pressure prior to injector activation in bi-fuel LPG/CNG vehicles. IC Role / Device Role / Timing Role: Safety-critical pressure validation node interfacing with fuel system controller via analog channel. Use Value: Built-in clamping (0.3 V / 4.7 V) and broken-track diagnostics allow fail-safe shutdown within 50 ms of open-circuit fault, meeting ISO 26262 ASIL-B requirements. | Use Scenario: Confirming stable manifold vacuum before re-engaging combustion after stop-start cycle in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Low-power wake-up sensor providing pressure confirmation to body control module (BCM) during restart sequence. Use Value: –40°C to +150°C operation and 8.5 mA supply current ensure reliable vacuum detection at cold ambient and hot soak conditions without heater bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPX5700A | 700 kPa range (0–7 bar), 0.2–4.8 V output, no integrated microcontroller or diagnostics | Requires external ADC, temperature compensation, and fault logic - increases MCU firmware complexity and BOM cost | Select MPX5700A only for non-automotive, cost-sensitive industrial applications where diagnostics and ASIL compliance are not required. |
| SP12-001 | 0.1–1.2 bar range, 0.5–4.5 V output, no programmable clamping or PFLT/SSF filtering | Lacks digital configuration capability - fixed transfer curve and no filter tuning for noise vs. response trade-off | Choose SP12-001 for simple, static-pressure monitoring where adaptive filtering and field-reconfigurable diagnostics are unnecessary. |
Compared with MPX5700A and SP12-001, MLX90817LXE-DBH-008-RE delivers superior low-end resolution (18 mV/V/bar), embedded diagnostics for functional safety, and configurable filtering - reducing system-level validation effort and enabling single-chip compliance with ASIL-B pressure sensing requirements.
Availability
MLX90817LXE-DBH-008-RE is available at Aetrix Electronics and suitable for engine control units, turbocharger actuators, LPG/CNG fuel systems, and start-stop validation modules requiring stable component supply across automotive production lifecycles.
Supply support for MLX90817LXE-DBH-008-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 applications, with ISO/TS 16949 certification and >25 years of automotive sensor design expertise.
The MLX90817 product line was engineered specifically for high-reliability, high-accuracy absolute pressure measurement in harsh under-hood environments - targeting ASIL-B–compliant engine management, turbo control, and alternative fuel systems.
FAQ
What is the calibrated pressure range and output voltage span of the MLX90817LXE-DBH-008-RE?
The MLX90817LXE-DBH-008-RE is factory calibrated for an absolute pressure range of 0.1 bar to 1.15 bar, producing a ratiometric analog output spanning 0.4 V to 4.65 V at nominal 5 V supply. This transfer curve is permanently stored in on-chip EEPROM and remains stable over the full –40°C to +150°C operating temperature range without recalibration.
Does the MLX90817LXE-DBH-008-RE support diagnostic features required for ASIL-B compliance?
Yes, the MLX90817LXE-DBH-008-RE integrates multiple automotive diagnostics including broken-track detection on VDD and GND lines, overvoltage (18 V) and reverse-voltage (–14 V) protection, clamping-level programmability, and internal fault reporting. These features collectively support diagnostic coverage targets defined in ISO 26262 for ASIL-B pressure sensing functions.
Can the MLX90817LXE-DBH-008-RE's analog output be reconfigured for different pressure ranges or output spans?
No - the MLX90817LXE-DBH-008-RE is factory-programmed with fixed calibration parameters for the 0.1–1.15 bar / 0.4–4.65 V transfer curve. While the device supports EEPROM reprogramming of clamping levels, filters, and diagnostics, the core pressure-to-voltage mapping is immutable per option code DBH-008. For alternate ranges, select other MLX90817 variants (e.g., DBG-003 for 0.2–5.5 bar).
What is the recommended PCB land pattern and thermal management for the MLX90817LXE-DBH-008-RE?
The MLX90817LXE-DBH-008-RE requires the JEDEC MO-220 DFN14 land pattern with a 3.0 × 3.5 mm thermal pad (centered under package). Six thermal vias (0.3 mm diameter, spaced ≤1 mm apart) must connect the pad to inner ground planes. Decoupling capacitance (47–100 nF) must be placed ≤2 mm from pin 7 (VDD) with low-inductance routing to minimize EMC susceptibility.
How does the MLX90817LXE-DBH-008-RE achieve its ±12.5 mbar total pressure accuracy over temperature?
The MLX90817LXE-DBH-008-RE achieves ±12.5 mbar accuracy through a combination of on-die temperature sensing, 16-bit DSP-based compensation using third-order polynomial coefficients (O0–O3, G0–G3) stored in EEPROM, and factory calibration across pressure and temperature grids. This eliminates need for host MCU compensation algorithms while maintaining accuracy across –40°C to +150°C.
MLX90817LXE-DBH-008-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- 14-BFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-DBH-008-RE FAQ
1.How can I place an order for MLX90817LXE-DBH-008-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90817LXE-DBH-008-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 MLX90817LXE-DBH-008-RE reliable?
The price and inventory of MLX90817LXE-DBH-008-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90817LXE-DBH-008-RE is usually 5 days.
3.What payment methods are accepted for MLX90817LXE-DBH-008-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90817LXE-DBH-008-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90817LXE-DBH-008-RE?
MLX90817LXE-DBH-008-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90817LXE-DBH-008-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 MLX90817LXE-DBH-008-RE?
For technical support, including MLX90817LXE-DBH-008-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90817LXE-DBH-008-RE requirements.
6.How does Aetrix verify that MLX90817LXE-DBH-008-RE is sourced from the original manufacturer or authorized distributors?
All MLX90817LXE-DBH-008-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 MLX90817LXE-DBH-008-RE meets industry standards.
7.What is the process for return or replacement of MLX90817LXE-DBH-008-RE?
All MLX90817LXE-DBH-008-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90817LXE-DBH-008-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 MLX90817LXE-DBH-008-RE part is unused and in its original packaging.
Return procedure for MLX90817LXE-DBH-008-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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