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Melexis Technologies NV MLX90421GVD-ADC-000-RX
- Part No.:
- MLX90421GVD-ADC-000-RX
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90421GVD-ADC-000-RX.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 4SMP
- Quantity:
- Payment:
- Shipping:
Inventory:2,670
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Product details
Overview
MLX90421GVD-ADC-000-RX from Melexis is a monolithic Triaxis® Hall-based magnetic position sensor IC for absolute rotary and linear position sensing. It delivers ratiometric analog or PWM output, supports -40°C to +160°C operation, achieves ±0.5° angular accuracy (typ.), and integrates on-chip DSP with 17-point programmable linearization - used in throttle, pedal, and steering wheel position sensing.
For engineers reviewing the MLX90421GVD-ADC-000-RX datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SMP-4), confirmed SMP-4 pinout, ISO26262 ASIL B safety status, AEC-Q100 Grade 0 qualification, and real-world functional alternatives for automotive position-sensing designs.
Technical Context
The MLX90421GVD-ADC-000-RX implements dual-die redundancy in a single-mold SMP-4 package, with independent VDD/VSS/OUT1/OUT2 terminals enabling fault-tolerant dual-channel output. Its Triaxis® front end measures Bx, By, and Bz components simultaneously, enabling robust absolute angle calculation without external magnets aligned to a single axis.
Signal processing includes configurable FIR filtering, programmable diagnostics (broken-wire detection), and end-user calibration of transfer characteristics. Output timing is deterministic: analog refresh at 448 µs (typ.), PWM frame period adjustable from 500 µs to 10 ms, with worst-case step response under 2.2 ms for Filter 2 configuration.
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 (0.5–99% VDD) or PWM (100–2000 Hz, ±1% initial tolerance) |
| Angular Accuracy | ±0.5° (typ.) over full 0–360° range, after 17-point linearization |
| Supply Current | 17 mA (max) - dual-die operation doubles single-die 8.5 mA typical |
| Functional Safety | ISO26262 ASIL B Safety Element out of Context (SEooC), with diagnostic cycle time 19.7 ms |
| Magnetic Range | ±1 T (Bmax) - supports high-field magnet configurations for compact mechanical design |
| Startup Time | 5.0 ms (typ.) for analog output; 6.3 ms (typ.) for first valid PWM data after power-on |
Pinout & Package
SMP-4 is a PCB-less single-mold dual-die package with 4 terminals: two outputs (OUT1/OUT2), one shared supply (VDD), and one shared ground (VSS). Designed for direct soldering onto flex or rigid substrates with minimal footprint (2.1 × 1.8 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Primary ratiometric analog or PWM output channel (die 1) |
| 2 | VSS | Common ground reference for both dies; must be low-impedance connection |
| 3 | VDD | Single 4.5–5.5 V supply input for both dies; internal regulation to 3.3 V |
| 4 | OUT2 | Redundant ratiometric analog or PWM output channel (die 2); enables cross-checking |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® 3D Hall Sensing | Measures Bx, By, Bz simultaneously - enables true absolute angle calculation with off-axis magnet placement |
| 17-Point Programmable Linearization | Corrects nonlinearity in final system assembly; eliminates need for external calibration hardware |
| Dual-Die Redundancy (SMP-4) | Independent die-level diagnostics and outputs - supports ASIL B decomposition without external monitoring |
| Broken-Wire Detection | Passive diagnostics detect open-circuit VDD/VSS via output voltage thresholds (e.g., BVDDPU = 92.5–99.5% VDD) |
| Configurable Filtering | Three FIR filter settings (Filter 0–2) trade latency (228–240 µs) vs. noise rejection for dynamic applications |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Real-time detection of accelerator or brake pedal rotation within 0–90° mechanical range under vibration and temperature extremes. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing ratiometric analog output synchronized to ECU sampling at ≥2 kHz. Use Value: ±0.5° accuracy ensures precise torque mapping; dual-die SMP-4 output enables redundant signal validation per ISO26262. |
Use Scenario: Contactless measurement of pedal angular displacement in EV and ICE vehicles, exposed to dust, moisture, and thermal cycling. IC Role / Device Role / Timing Role: Triaxis® magnetic sensor delivering PWM output with 19.7 ms diagnostic cycle for continuous health monitoring. Use Value: Eliminates potentiometer wear; SMP-4's PCB-less construction reduces assembly cost and improves mechanical robustness. |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Monitoring absolute steering angle across full 360°+ rotation for EPS assist and ADAS yaw correction. IC Role / Device Role / Timing Role: High-accuracy position IC with 17-point linearization compensating for magnet misalignment in column-mounted assemblies. Use Value: Enables <1° total error budget required for lane-keeping systems; ASIL B SEooC status simplifies FMEDA integration. |
Use Scenario: Detecting suspension travel in air-ride or adaptive damping systems, where compact size and high-temp resilience are critical. IC Role / Device Role / Timing Role: Linear position sensor using axial magnet configuration; operates continuously at 160°C ambient near exhaust components. Use Value: SMP-4 package withstands +180°C short-term exposure; dual-die architecture supports fail-operational height feedback. |
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-RX | Same SMP-4 package and pinout; adds SENT output protocol alongside analog/PWM | Required where OEM mandates SENT interface for ECU communication | Select when SENT compliance is mandatory; otherwise MLX90421GVD-ADC-000-RX offers lower system cost and identical core sensing performance |
| TLV493DW2B6HTSA1 | Single-die 3D Hall sensor in TSSOP-16; no ASIL B certification or programmable linearization | Suitable for non-safety-critical industrial encoders, not automotive ASIL B systems | Use only in cost-sensitive, non-automotive applications; lacks redundancy, safety documentation, and field-programmable calibration |
Compared with MLX90421GVD-ADC-000-RX, the MLX90422 variant adds SENT output but increases BOM cost and complexity, while the TLV493D offers basic 3D sensing without automotive qualification or dual-die fault tolerance - making MLX90421GVD-ADC-000-RX the optimal balance of safety, accuracy, and package efficiency for ASIL B rotary sensing.
Availability
MLX90421GVD-ADC-000-RX is available at Aetrix Electronics and suitable for automotive throttle control, pedal position monitoring, and steering angle feedback requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90421GVD-ADC-000-RX 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 global manufacturing and AEC-Q100-compliant test infrastructure.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for ASIL B automotive systems, designed specifically to replace contact-based potentiometers and simplify high-reliability rotary/linear sensing in harsh environments.
FAQ
What is the package type and footprint of MLX90421GVD-ADC-000-RX?
The MLX90421GVD-ADC-000-RX uses the SMP-4 package: a PCB-less, single-mold dual-die solution measuring 2.1 × 1.8 mm with four terminals (VDD, VSS, OUT1, OUT2). It is designed for direct surface-mount soldering onto flex or rigid boards without carrier PCB, reducing system size and cost. Pin 1 is OUT1, Pin 2 is VSS, Pin 3 is VDD, and Pin 4 is OUT2 - confirmed in Melexis datasheet section 3.5.
Does MLX90421GVD-ADC-000-RX support functional safety requirements for automotive use?
Yes, MLX90421GVD-ADC-000-RX is certified as an ISO26262 ASIL B Safety Element out of Context (SEooC) and qualified to AEC-Q100 Grade 0 (-40°C to +160°C). It includes built-in diagnostics such as broken-wire detection, watchdog timers, and dual-die cross-check capability - all documented in the official safety manual and validated per ISO26262 Part 5 requirements for SEooC integration.
What output protocols does MLX90421GVD-ADC-000-RX support, and how are they configured?
MLX90421GVD-ADC-000-RX supports ratiometric analog voltage (0.5–99% VDD) and PWM (100–2000 Hz) outputs. Configuration is performed post-assembly via Melexis' PTC programming tool using the Test pins (not accessible in SMP-4), or pre-programmed at wafer/test level. The output mode, frequency, linearization points, and filtering are stored in NVRAM and retained across power cycles.
Can MLX90421GVD-ADC-000-RX operate above 160°C, and what limitations apply?
Yes, MLX90421GVD-ADC-000-RX supports extended operation up to +180°C for ≤250 hours in SMP-4, SMP-3, and DMP-4 packages. At 180°C, supply voltage must remain within 4.5–5.5 V, and performance degrades: analog output saturation shifts, and diagnostic cycle time increases. Full specifications revert at ≤160°C; details are in datasheet section 4.1 and Table 10.
How is angular accuracy achieved in MLX90421GVD-ADC-000-RX, and what factors affect it?
MLX90421GVD-ADC-000-RX achieves ±0.5° typical angular accuracy through Triaxis® 3D Hall sensing combined with 17-point end-user programmable linearization. Accuracy depends on magnet geometry, air gap, temperature stability, and proper PCB layout (especially decoupling). The 17-point table corrects system-level nonlinearity after mechanical assembly - eliminating need for external calibration fixtures.
MLX90421GVD-ADC-000-RX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 4-SIP Module
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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-RX FAQ
1.How can I place an order for MLX90421GVD-ADC-000-RX through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVD-ADC-000-RX 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-RX reliable?
The price and inventory of MLX90421GVD-ADC-000-RX 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-RX is usually 5 days.
3.What payment methods are accepted for MLX90421GVD-ADC-000-RX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVD-ADC-000-RX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVD-ADC-000-RX?
MLX90421GVD-ADC-000-RX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVD-ADC-000-RX 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-RX?
For technical support, including MLX90421GVD-ADC-000-RX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVD-ADC-000-RX requirements.
6.How does Aetrix verify that MLX90421GVD-ADC-000-RX is sourced from the original manufacturer or authorized distributors?
All MLX90421GVD-ADC-000-RX 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-RX meets industry standards.
7.What is the process for return or replacement of MLX90421GVD-ADC-000-RX?
All MLX90421GVD-ADC-000-RX units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVD-ADC-000-RX, 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-RX part is unused and in its original packaging.
Return procedure for MLX90421GVD-ADC-000-RX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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