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Melexis Technologies NV MLX90421GVD-ADC-000-TU
- Part No.:
- MLX90421GVD-ADC-000-TU
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90421GVD-ADC-000-TU.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 4SMP
- Quantity:
- Payment:
- Shipping:
Inventory:4,959
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Product details
Overview
MLX90421GVD-ADC-000-TU 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 and ISO 26262 ASIL B safety certification, it delivers ±0.5° angular accuracy in automotive throttle and pedal position systems.
For engineers reviewing the MLX90421GVD-ADC-000-TU datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SMP-4), functional pin definitions (OUT1/VSS/VDD/OUT2), real-world timing specs (448 µs angle measurement period), and validated alternatives for redundant position sensing in high-temperature automotive subsystems.
Technical Context
The MLX90421GVD-ADC-000-TU implements dual-die redundancy in a single-mold SMP-4 package, with independent VDD/VSS/OUT paths per die and internal isolation between dies. Its Triaxis® architecture measures Bx, By, and Bz components to compute absolute angle or linear displacement without mechanical contact.
It supports post-assembly programming of transfer characteristics (up to 17-point linearization), configurable diagnostics (broken-wire detection), and failsafe state activation within 5–33 ms after digital fault detection. Output modes include ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz) with programmable frame timing and startup behavior.
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 |
| Supply Voltage | 4.5 V to 5.5 V; absolute max +37 V for <60 s |
| Output Type | Ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz, ±1% initial tolerance) |
| Angle Accuracy | ±0.5° typical over full range (0–360°) with 17-point linearization enabled |
| Measurement Period | 448 µs internal angle acquisition time (default factory setting) |
| Safety Certification | ISO 26262 ASIL B Safety Element out of Context; includes watchdog, CRC, ECC, and diagnostic cycle time (10.9 ms analog / 19.7 ms digital) |
| Package | SMP-4: PCB-less single-mold dual-die package with 4-pin footprint (OUT1/VSS/VDD/OUT2) |
Pinout & Package
SMP-4 is a compact, PCB-less single-mold package optimized for high-temperature automotive mounting. It integrates decoupling capacitance and supports direct soldering onto flex or rigid substrates without external PCB routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Primary analog or PWM output from Die 1; enables redundancy monitoring when paired with OUT2 |
| 2 | VSS | Common ground reference for both dies; must be low-impedance connection to system GND |
| 3 | VDD | Single supply input (4.5–5.5 V) powering both dies; internal regulation to 3.3 V for analog core |
| 4 | OUT2 | Independent analog or PWM output from Die 2; used for cross-checking or fail-safe arbitration |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die redundancy | Independent signal chains in SMP-4 package with isolation >4 MΩ between dies (TSSOP-16 spec applied to SMP-4 per datasheet Section 5) |
| 17-point linearization | End-user programmable transfer curve enabling <±0.3° residual INL after calibration against magnet nonlinearity |
| Broken-wire diagnostics | Detects open-circuit faults on VDD or VSS via passive output level shifts (e.g., BVDDPU = 92.5–99.5% VDD) |
| High-temp operation | Validated functionality at +180°C ambient for ≤250 h in SMP-4, with degraded but functional output pull-up to VDD |
| Triaxis® 3D sensing | Simultaneous Bx/By/Bz measurement enables absolute position calculation from arbitrary magnet orientations |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Real-time detection of accelerator or brake pedal rotation angle in electric/hybrid powertrains. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing 0–360° analog/PWM output synchronized to ECU control loop (≤448 µs latency). Use Value: Enables precise torque mapping and regenerative braking control with ASIL B-compliant redundancy via dual OUT1/OUT2 signals. | Use Scenario: Non-contact measurement of pedal travel distance in brake-by-wire or drive-by-wire systems. IC Role / Device Role / Timing Role: Linear position transducer converting magnet displacement into ratiometric voltage or PWM duty cycle. Use Value: Eliminates potentiometer wear and drift; SMP-4's +160°C rating supports under-hood placement near master cylinder. |
| Steering Wheel Position | Ride Height Control |
Use Scenario: Monitoring steering angle for EPS assist and ADAS lane-keeping functions. IC Role / Device Role / Timing Role: High-accuracy angular sensor feeding CAN/FlexRay gateway with fail-safe dual-output validation. Use Value: Dual-die SMP-4 outputs allow real-time cross-checking to detect single-point failures before safety-critical errors occur. | Use Scenario: Measuring suspension compression/expansion in adaptive air ride systems. IC Role / Device Role / Timing Role: Absolute linear position sensor mounted on shock absorber or control arm. Use Value: Robustness to vibration and temperature cycling (−40°C to +160°C) ensures consistent height feedback across vehicle lifetime. |
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-TU | Same SMP-4 package and dual-die architecture; adds SENT output protocol alongside analog/PWM | Required where OEM mandates SENT interface for diagnostic data streaming | Select when SENT compliance is mandatory; otherwise MLX90421GVD-ADC-000-TU offers identical position accuracy and redundancy at lower system cost |
| MLX90411GVD-ADC-000-TU | Single-die SMP-4 variant; no inter-die isolation; reduced diagnostic coverage (no dual-output comparison) | Suitable for non-safety-critical linear/rotary sensing where ASIL B is not required | Choose for cost-sensitive industrial applications; avoid in ASIL B automotive systems due to lack of redundancy |
Compared with MLX90421GVD-ADC-000-TU, MLX90422GVD-ADC-000-TU adds SENT output capability without compromising angular accuracy or temperature range, while MLX90411GVD-ADC-000-TU reduces cost by removing die redundancy-making it unsuitable for safety-critical automotive use cases requiring dual-channel validation.
Availability
MLX90421GVD-ADC-000-TU is available at Aetrix Electronics and suitable for automotive throttle position, pedal position, steering angle, and ride height sensing applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90421GVD-ADC-000-TU 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 design centers in Europe and Asia and global manufacturing partnerships.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for automotive safety-critical systems, targeting applications demanding ASIL B compliance, high-temperature resilience, and non-contact reliability in harsh environments.
FAQ
What is the maximum operating temperature for MLX90421GVD-ADC-000-TU?
The MLX90421GVD-ADC-000-TU operates continuously from −40°C to +160°C per AEC-Q100 Grade 0 qualification. In the SMP-4 package, it supports extended exposure up to +180°C for ≤250 hours, with functional output and degraded but specified electrical performance per datasheet Table 10.
Does MLX90421GVD-ADC-000-TU support both analog and PWM outputs simultaneously?
No, the MLX90421GVD-ADC-000-TU configures its output stage for either ratiometric analog voltage or PWM signal-not both concurrently. The selection is programmed during final test or end-user calibration using Melexis' PTC software and remains fixed until reprogrammed.
How is redundancy implemented in MLX90421GVD-ADC-000-TU's SMP-4 package?
Redundancy in MLX90421GVD-ADC-000-TU is achieved via two physically independent dies in one SMP-4 mold. Each die has dedicated OUT1/OUT2 pins, shared VDD/VSS, and isolated internal circuitry-verified by ≥4 MΩ inter-die isolation resistance. This allows real-time cross-checking of position data for ASIL B fault detection.
Can MLX90421GVD-ADC-000-TU be calibrated after installation in the final assembly?
Yes, MLX90421GVD-ADC-000-TU supports post-assembly programming of its 17-point linearization table, output type, PWM frequency, and diagnostic thresholds using Melexis' PTC tool and standard I²C-compatible interface-enabling system-level calibration to compensate for magnet and mechanical tolerances.
What is the angle measurement latency of MLX90421GVD-ADC-000-TU in analog mode?
In analog output mode with default filter settings, the MLX90421GVD-ADC-000-TU exhibits 228–240 µs average latency (τL) from magnet movement to output voltage change, and worst-case step response of 763–2223 µs depending on filter configuration (Filter 0–2) and magnetic transition timing relative to internal measurement sequence.
MLX90421GVD-ADC-000-TU 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-TU FAQ
1.How can I place an order for MLX90421GVD-ADC-000-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVD-ADC-000-TU 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-TU reliable?
The price and inventory of MLX90421GVD-ADC-000-TU 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-TU is usually 5 days.
3.What payment methods are accepted for MLX90421GVD-ADC-000-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVD-ADC-000-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVD-ADC-000-TU?
MLX90421GVD-ADC-000-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVD-ADC-000-TU 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-TU?
For technical support, including MLX90421GVD-ADC-000-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVD-ADC-000-TU requirements.
6.How does Aetrix verify that MLX90421GVD-ADC-000-TU is sourced from the original manufacturer or authorized distributors?
All MLX90421GVD-ADC-000-TU 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-TU meets industry standards.
7.What is the process for return or replacement of MLX90421GVD-ADC-000-TU?
All MLX90421GVD-ADC-000-TU units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVD-ADC-000-TU, 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-TU part is unused and in its original packaging.
Return procedure for MLX90421GVD-ADC-000-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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