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Melexis Technologies NV MLX90421GVD-ADC-000-SP
- Part No.:
- MLX90421GVD-ADC-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90421GVD-ADC-000-SP.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 4SMP
- Quantity:
- Payment:
- Shipping:
Inventory:1,719
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Product details
Overview
MLX90421GVD-ADC-000-SP from Melexis is a Triaxis® monolithic magnetic position sensor IC for absolute rotary and linear position sensing. It integrates a 3-axis Hall front end, DSP-based signal processing, and programmable ratiometric analog or PWM output. Operating from −40°C to +160°C with AEC-Q100 Grade 0 qualification, it delivers ±0.5° angular accuracy and supports non-contacting potentiometer replacement in throttle and pedal systems.
For engineers reviewing the MLX90421GVD-ADC-000-SP datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SMP-4), SMP-4 pin definitions, ISO26262 ASIL B safety compliance, programmable 17-point linearization, and dual-die redundancy architecture details critical for automotive functional safety design.
Technical Context
The MLX90421GVD-ADC-000-SP implements Triaxis® Hall technology to measure Bx, By, and Bz magnetic field components simultaneously, enabling absolute angle calculation from 0° to 360° without external magnets or gears. Its dual-die SMP-4 package provides hardware-level redundancy with isolated supply/ground paths per die and ≥4 MΩ inter-die isolation resistance.
Signal conditioning includes on-chip ADC, FIR filtering (three selectable filter modes), and programmable transfer characteristics. Output is configurable as ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz), both supporting broken-wire diagnostics via dedicated passive diagnostic levels (e.g., BVSSPD = 1.2% VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40°C to +160°C (AEC-Q100 Grade 0); extended to +180°C for ≤250 h in SMP-4 package |
| Output Type | Ratiometric analog or PWM; both support real-time diagnostics and fail-safe state activation |
| Angular Accuracy | ±0.5° typical over full range; enabled by 17-point programmable linearization and on-chip DSP |
| Supply Current | 15–20 mA total (dual-die); 7.5–10 mA per die at 5 V, enabling low-power redundant sensing |
| Isolation Resistance | ≥4 MΩ between dies (VSS1–VSS2); ensures independent fault containment in safety-critical systems |
| Diagnostics Cycle | 10.9 ms analog / 19.7 ms digital DCT; meets ASIL B timing requirements for fault detection latency |
| Startup Time | 5.0 ms max analog startup; 6.3 ms max PWM startup to first valid data-critical for engine control sync |
Pinout & Package
SMP-4 is a PCB-less single-mold dual-die package with 4 terminals: two outputs (OUT1/OUT2), one shared VDD, and one shared VSS. Designed for high-reliability automotive mounting, it integrates decoupling capacitance internally and requires no external PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Dedicated output for Die 1; enables cross-checking with OUT2 in redundant architectures |
| 2 | VSS | Common ground terminal for both dies; electrically isolated from VSS1/VSS2 in TSSOP-16 |
| 3 | VDD | Shared 4.5–5.5 V supply input; dual-die current draw scales linearly (2× single-die IDD) |
| 4 | OUT2 | Dedicated output for Die 2; supports differential comparison or voting logic in ASIL B systems |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® 3-Axis Sensing | Measures Bx, By, Bz simultaneously to compute absolute angle/position without mechanical stops or calibration |
| ASIL B Safety Element | ISO26262-compliant SEooC with built-in diagnostics (watchdog, memory ECC, signal path monitoring) |
| 17-Point Linearization | End-user programmable transfer curve eliminates system-level calibration labor and improves linearity to ±0.5° |
| Dual-Die Redundancy | Independent signal chains in SMP-4 enable fault detection via output comparison without external circuitry |
| Broken-Wire Diagnostics | Passive voltage thresholds (e.g., BVDDPU = 92.5% VDD) detect open-circuit faults on VDD/VSS lines |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Real-time detection of accelerator pedal angle in gasoline/diesel powertrains under vibration and temperature extremes. IC Role / Device Role / Timing Role: Absolute angular position sensor providing primary feedback to ECU; dual-die outputs enable cross-validation per ASIL B. Use Value: Eliminates contact wear and potentiometer drift; ±0.5° accuracy ensures precise air-fuel ratio control across −40°C to +160°C ambient. |
Use Scenario: Monitoring brake or clutch pedal displacement in ADAS-equipped vehicles with functional safety requirements. IC Role / Device Role / Timing Role: Redundant position transducer feeding two independent control channels; 10.9 ms diagnostic cycle meets ASIL B fault detection timing. Use Value: SMP-4's integrated dual-die architecture reduces BOM count vs. discrete dual-sensor solutions while maintaining inter-die isolation ≥4 MΩ. |
| Steering Wheel Position | Ride Height Control |
Use Scenario: Measuring steering angle for EPS and lane-keeping assist without gear backlash or hysteresis errors. IC Role / Device Role / Timing Role: High-accuracy absolute rotary sensor with programmable 0–360° range; outputs synchronized to vehicle CAN clock. Use Value: Triaxis® 3D field measurement enables robust operation despite magnet misalignment; 17-point linearization compensates for mechanical tolerances. |
Use Scenario: Detecting suspension travel in adaptive damping systems exposed to road shock and thermal cycling. IC Role / Device Role / Timing Role: Linear position transducer mounted on shock absorber; analog output interfaces directly with 12-bit ADC in body controller. Use Value: Ratiometric analog output rejects supply noise; SMP-4's PCB-less construction withstands 50g mechanical shock without solder joint fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute magnetic position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90422GVD-ADC-000-SP | Same SMP-4 package and dual-die architecture but with enhanced ASIL B diagnostic coverage (additional memory ECC, faster DCT) | Required for new designs targeting ASIL B with higher diagnostic coverage targets (DC < 90%) | Select MLX90422GVD-ADC-000-SP when functional safety FMEDA requires extended diagnostic capability beyond baseline MLX90421GVD-ADC-000-SP. |
| MLX90412GDC-ADC-000-RE | SOIC-8 single-die variant with identical core sensing and 17-point linearization but no hardware redundancy | Suitable for non-safety-critical applications like HVAC flap control where cost and footprint are prioritized over redundancy | Choose MLX90412GDC-ADC-000-RE only when ASIL compliance is not required and board space allows SOIC-8 placement. |
Compared with MLX90421GVD-ADC-000-SP, MLX90422GVD-ADC-000-SP adds diagnostic enhancements for higher ASIL B coverage, while MLX90412GDC-ADC-000-RE removes redundancy to reduce cost and size-making the MLX90421GVD-ADC-000-SP the optimal balance of safety, accuracy, and integration for Tier 1 automotive position sensing.
Availability
MLX90421GVD-ADC-000-SP is available at Aetrix Electronics and suitable for throttle position sensing, pedal position sensing, steering angle measurement, and ride height control requiring stable component supply across automotive production lifecycles.
Supply support for MLX90421GVD-ADC-000-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 sensing, infrared thermometry, and automotive ICs, with ISO/TS 16949-certified manufacturing.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for ASIL B automotive systems, designed specifically to replace contact-based potentiometers in harsh-environment powertrain and chassis applications.
FAQ
What is the operating temperature range of the MLX90421GVD-ADC-000-SP?
The MLX90421GVD-ADC-000-SP operates from −40°C to +160°C per AEC-Q100 Grade 0 qualification. In the SMP-4 package, it supports extended operation up to +180°C for ≤250 hours, validated for high-temperature engine bay applications where thermal derating must be managed.
How does the MLX90421GVD-ADC-000-SP achieve ASIL B compliance?
The MLX90421GVD-ADC-000-SP achieves ISO26262 ASIL B compliance as a Safety Element out of Context (SEooC) through on-chip diagnostics including memory ECC, watchdog timers, signal path monitoring, and programmable fail-safe states. Its SMP-4 dual-die architecture provides hardware redundancy with ≥4 MΩ inter-die isolation, enabling fault detection without external components.
What output configurations does the MLX90421GVD-ADC-000-SP support?
The MLX90421GVD-ADC-000-SP supports ratiometric analog output (0.5–99% VDD) and PWM output (100–2000 Hz). Both outputs include broken-wire diagnostics with defined voltage thresholds (e.g., BVDDPU = 92.5% VDD). The output mode is configured during programming after assembly, allowing system-level calibration.
Can the MLX90421GVD-ADC-000-SP be used for linear position sensing?
Yes, the MLX90421GVD-ADC-000-SP supports both absolute rotary (0–360°) and absolute linear position sensing. Its Triaxis® Hall front end measures all three magnetic field components (Bx, By, Bz), and programming determines which axes are used-enabling flexible magnet configurations for float-level or suspension travel detection.
What is the pin configuration of the SMP-4 package used in MLX90421GVD-ADC-000-SP?
The MLX90421GVD-ADC-000-SP in SMP-4 package has four terminals: Pin 1 = OUT1 (Die 1 output), Pin 2 = VSS (shared ground), Pin 3 = VDD (shared 4.5–5.5 V supply), Pin 4 = OUT2 (Die 2 output). No test or NC pins are present-this PCB-less package integrates decoupling capacitance internally.
MLX90421GVD-ADC-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 4-SIP Module
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- Linear, Rotary Position
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- 0° ~ 360°, Continuous
- Linear Range:
- -
- Output:
- Analog Voltage, PWM
- Output Signal:
- Programmable
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- ±1°
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Through Hole
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SMP-4
MLX90421GVD-ADC-000-SP FAQ
1.How can I place an order for MLX90421GVD-ADC-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-SP reliable?
The price and inventory of MLX90421GVD-ADC-000-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90421GVD-ADC-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90421GVD-ADC-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVD-ADC-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVD-ADC-000-SP?
MLX90421GVD-ADC-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-SP?
For technical support, including MLX90421GVD-ADC-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVD-ADC-000-SP requirements.
6.How does Aetrix verify that MLX90421GVD-ADC-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90421GVD-ADC-000-SP?
All MLX90421GVD-ADC-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-SP part is unused and in its original packaging.
Return procedure for MLX90421GVD-ADC-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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