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Melexis Technologies NV MLX90421GVD-ADC-000-RE
- Part No.:
- MLX90421GVD-ADC-000-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SIP Module
- Datasheet:
-
MLX90421GVD-ADC-000-RE.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 4SMP
- Quantity:
- Payment:
- Shipping:
Inventory:1,081
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Product details
Overview
MLX90421GVD-ADC-000-RE 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 conditioning, 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-RE datasheet, pinout, applications, or equivalent options, key selection criteria include its SMP-4 dual-die redundant package, ISO 26262 ASIL B safety element out of context compliance, 17-point programmable linearization, and high-temperature operation up to +180 °C for limited duration.
Technical Context
The MLX90421GVD-ADC-000-RE implements Triaxis® Hall technology to measure Bx, By, and Bz magnetic field components simultaneously, enabling robust absolute angle calculation from 0° to 360° without mechanical wear. Its on-chip DSP performs real-time multi-point linearization and filtering, with configurable FIR filter settings (Filter 0–2) directly impacting worst-case step response (763–2223 μs).
It operates in continuous acquisition mode with fixed 448 μs internal angle measurement period and supports two independent outputs (OUT1/OUT2) in SMP-4 package for redundancy-critical applications. The device features programmable diagnostics including broken-wire detection on VDD/VSS lines and failsafe state activation within 5–33 ms after digital fault detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40 °C to +160 °C; 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 or PWM; dual independent outputs in SMP-4 |
| Angular Accuracy | ±0.5° typical over full range; includes INL/DNL compensation |
| Linearization | 17-point programmable transfer characteristic for custom magnet geometry |
| Safety Certification | ISO 26262 ASIL B Safety Element out of Context; AEC-Q100 Grade 0 qualified |
| Measurement Rate | Fixed 448 μs internal angle measurement period in continuous mode |
Pinout & Package
SMP-4 is a PCB-less single-mold dual-die package with 4 terminals, optimized for compact, high-reliability automotive position sensing. It integrates decoupling capacitance and supports redundant signal paths without external components.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Primary ratiometric analog or PWM output; electrically isolated from OUT2 |
| 2 | VSS | Common ground reference for both dies; must be low-impedance connection |
| 3 | VDD | Single supply input for dual-die operation; internally distributed to both dies |
| 4 | OUT2 | Redundant ratiometric analog or PWM output; enables cross-checking in safety systems |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® 3-Axis Sensing | Enables absolute position calculation from arbitrary magnet motion using Bx/By/Bz vector resolution |
| Dual-Die Redundancy (SMP-4) | Independent signal chains allow comparison and fault detection per ISO 26262 ASIL B requirements |
| 17-Point Programmable Linearization | Compensates for magnet nonlinearity and mechanical tolerances without host MCU intervention |
| High-Temperature Operation | Validated operation at +180 °C ambient for ≤250 h-critical for under-hood and transmission applications |
| Broken-Wire Diagnostics | Detects open-circuit faults on VDD or VSS lines via dedicated diagnostic output levels (e.g., BVDDPU = 92.5–99.5% VDD) |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal angle in gasoline/diesel powertrains for precise air-fuel ratio control. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing real-time analog/PWM feedback with <470 μs output refresh and ±0.5° accuracy. Use Value: Enables closed-loop engine management with fail-safe dual-output redundancy in SMP-4 package. | Use Scenario: Detecting brake or clutch pedal displacement in ADAS-equipped vehicles for predictive braking and regenerative energy recovery. IC Role / Device Role / Timing Role: High-temperature-tolerant linear position sensor with programmable transfer curve matching pedal travel profile. Use Value: Eliminates contact wear and drift over 10M+ cycles while supporting ASIL B system-level safety goals. |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Measuring steering angle for EPS torque assist, lane-keeping, and automated parking functions. IC Role / Device Role / Timing Role: Non-contacting absolute rotary sensor with 360° range and <240 μs latency for real-time control loop response. Use Value: Provides deterministic timing and diagnostic coverage required for ISO 26262-compliant EPS systems. | Use Scenario: Monitoring suspension travel in adaptive damping and active ride height adjustment systems. IC Role / Device Role / Timing Role: Linear position sensor with programmable range and filtering to reject road vibration noise. Use Value: Delivers stable output under harsh vibration and thermal cycling (−40 °C to +160 °C) without recalibration. |
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 |
|---|---|---|---|
| MLX90421GDC-ADC-000-RE | SOIC-8 single-die package; no redundancy; lower thermal rating (+160 °C only) | Lacks dual-output capability and ASIL B safety evidence for redundant architectures | Select when cost-sensitive, non-safety-critical rotary sensing is sufficient and PCB space allows SOIC-8 |
| MLX90421GGO-ADC-000-RE | TSSOP-16 dual-die package with isolation resistance ≥4 MΩ between dies; larger footprint | Provides die-level isolation for higher diagnostic confidence but requires more board area than SMP-4 | Select when physical separation of die signals is mandated by functional safety analysis |
Compared with MLX90421GDC-ADC-000-RE and MLX90421GGO-ADC-000-RE, the MLX90421GVD-ADC-000-RE offers the smallest footprint among dual-die variants (SMP-4), integrated capacitors, and validated +180 °C operation-making it optimal for space-constrained, high-temperature, safety-critical applications like transmission position sensing.
Availability
MLX90421GVD-ADC-000-RE is available at Aetrix Electronics and suitable for automotive throttle position sensing, pedal position monitoring, steering angle measurement, and ride height control requiring stable component supply across extended temperature ranges and safety-certified performance.
Supply support for MLX90421GVD-ADC-000-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 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 powertrain, chassis, and ADAS systems, emphasizing robustness, programmability, and functional safety compliance from concept through production.
FAQ
What is the maximum ambient temperature rating for MLX90421GVD-ADC-000-RE?
The MLX90421GVD-ADC-000-RE is rated for continuous operation from −40 °C to +160 °C. It supports extended exposure up to +180 °C for ≤250 hours-valid only for SMP-4, SMP-3, and DMP-4 packages per datasheet Section 4.1. This high-temperature capability is confirmed for the exact MLX90421GVD-ADC-000-RE variant and enables use in transmission and turbocharger housings where conventional sensors fail.
Does MLX90421GVD-ADC-000-RE support both analog and PWM output simultaneously?
No, the MLX90421GVD-ADC-000-RE supports either ratiometric analog or PWM output per channel-not both simultaneously. Each output (OUT1 and OUT2) is independently configurable during programming, but both channels must use the same output protocol. This behavior is defined in Section 13.1 of the datasheet and applies specifically to the MLX90421GVD-ADC-000-RE in SMP-4 package.
How is redundancy implemented in MLX90421GVD-ADC-000-RE?
Redundancy in MLX90421GVD-ADC-000-RE is achieved via two fully independent die within the SMP-4 package, each with its own Triaxis® sensor, signal chain, and output driver (OUT1 and OUT2). They share only VDD and VSS connections. Diagnostic cross-checking-including broken-wire detection and mismatch alarms-is supported per ISO 26262 ASIL B requirements, as documented for this exact MLX90421GVD-ADC-000-RE ordering code.
What magnetic configurations does MLX90421GVD-ADC-000-RE support?
The MLX90421GVD-ADC-000-RE supports both absolute rotary (0°–360°) and absolute linear position sensing, determined by magnet orientation and programming. Its Triaxis® architecture measures Bx, By, and Bz to compute position regardless of magnet type (radial, axial, or side-mounted), as verified in Figure 2 and Section 1 of the datasheet for the MLX90421GVD-ADC-000-RE configuration.
Is MLX90421GVD-ADC-000-RE pin-compatible with prior-generation Melexis Triaxis® sensors?
Yes-the MLX90421GVD-ADC-000-RE in SMP-4 package maintains pin compatibility with earlier Triaxis® sensors using the same 4-pin SMP-4 footprint, as stated in Section 3.5 of the datasheet. This allows drop-in replacement in existing designs without PCB revision, provided the application firmware supports the updated register map and diagnostic features of the MLX90421GVD-ADC-000-RE.
MLX90421GVD-ADC-000-RE 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-RE FAQ
1.How can I place an order for MLX90421GVD-ADC-000-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-RE reliable?
The price and inventory of MLX90421GVD-ADC-000-RE 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-RE is usually 5 days.
3.What payment methods are accepted for MLX90421GVD-ADC-000-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVD-ADC-000-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVD-ADC-000-RE?
MLX90421GVD-ADC-000-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-RE?
For technical support, including MLX90421GVD-ADC-000-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVD-ADC-000-RE requirements.
6.How does Aetrix verify that MLX90421GVD-ADC-000-RE is sourced from the original manufacturer or authorized distributors?
All MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-RE meets industry standards.
7.What is the process for return or replacement of MLX90421GVD-ADC-000-RE?
All MLX90421GVD-ADC-000-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVD-ADC-000-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 MLX90421GVD-ADC-000-RE part is unused and in its original packaging.
Return procedure for MLX90421GVD-ADC-000-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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