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Melexis Technologies NV MLX90421GVE-ADC-000-RE
- Part No.:
- MLX90421GVE-ADC-000-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SIP Module
- Datasheet:
-
MLX90421GVE-ADC-000-RE.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 3SMP
- Quantity:
- Payment:
- Shipping:
Inventory:1,071
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Product details
Overview
MLX90421GVE-ADC-000-RE 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 programmable 17-point linearization, operates from −40°C to +160°C, and achieves ASIL B compliance per ISO 26262 as a safety element out of context - deployed in automotive throttle and pedal position systems.
For engineers reviewing the MLX90421GVE-ADC-000-RE datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SMP-3), confirmed SMP-3 pinout (VDD/OUT/VSS), real-world accuracy specs (±0.5° typical angular INL), functional safety architecture details, and validated alternatives for redundant or PCB-less implementations.
Technical Context
The MLX90421GVE-ADC-000-RE integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic field components, a 12-bit ADC, a DSP for on-chip signal conditioning, and a programmable output stage supporting either ratiometric analog voltage or PWM with 100–2000 Hz configurable frequency. Its internal architecture enables absolute angle calculation up to 360° using magnet motion in axial, radial, or lateral configurations.
It features factory-trimmable start-up thresholds (VDDstartH = 4.00 V typ), programmable diagnostics including broken-wire detection (BVSSPD = 1.2% VDD min), and dual-die redundancy support via separate die supply paths - though the GVE variant uses single-die SMP-3 packaging with integrated decoupling capacitance and no internal isolation between domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40°C to +160°C ambient; qualified per AEC-Q100 Grade 0 |
| Supply Voltage | 4.5 V to 5.5 V; start-up threshold 4.00 V typ ensures robust cold-cranking operation |
| Supply Current | 8.5 mA typ at 5 V; enables low-power engine bay deployment without thermal derating |
| Output Type | Ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz); supports fail-safe open-drain or push-pull drive |
| Angular Accuracy | ±0.5° typical integral non-linearity (INL) after 17-point linearization; enables high-fidelity pedal feedback |
| Safety Certification | ISO 26262 ASIL B Safety Element out of Context (SEooC); includes diagnostic cycle time DCTANA = 10.9 ms |
| Magnetic Range | ±1 T flux density tolerance; compatible with standard NdFeB magnets in compact air-gap designs |
Pinout & Package
SMP-3 is a PCB-less single-mold package with 3 solderable terminals: VDD (supply), OUT (programmable analog/PWM output), and VSS (ground). It integrates decoupling capacitance and supports direct mounting onto flexible substrates or metal leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VDD | Supply input | Accepts 4.5–5.5 V; internal regulator generates 3.3 V analog rail (VDEC = 3.3 V typ) |
| 2: OUT | Programmable output | Configurable as ratiometric analog (0.5–99% VDD) or PWM; supports open-drain NMOS or push-pull drive |
| 3: VSS | Ground reference | Low-impedance return path; broken-wire detection triggers if VSS opens (BVSSPD = 1.2% VDD min) |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Detects all three orthogonal magnetic field components (Bx, By, Bz) enabling absolute position calculation from arbitrary magnet orientations |
| 17-Point Linearization | End-user programmable transfer characteristic corrects mechanical/magnetic non-linearities without external calibration hardware |
| ASIL B SEooC Compliance | Includes watchdog timers, memory ECC, CRC-protected configuration, and diagnostic cycle timing (DCTANA = 10.9 ms) |
| PCB-less SMP-3 Packaging | Compact 3-terminal mold eliminates PCB assembly; integrated capacitors reduce BOM count and improve EMC robustness |
| Ratiometric Analog Output | Output scales directly with VDD (e.g., 50% VDD = mid-scale), eliminating supply voltage drift errors in noisy automotive environments |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal rotation in gasoline/diesel powertrains under vibration, temperature cycling, and EMI exposure. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing real-time angle data to ECU via analog or PWM interface with <470 µs refresh period. Use Value: ±0.5° INL accuracy and ASIL B diagnostics ensure precise torque control and fault detection during transient load changes. |
Use Scenario: Detecting brake or accelerator pedal displacement in ADAS-equipped vehicles where mechanical wear must not degrade signal fidelity. IC Role / Device Role / Timing Role: Non-contacting linear position transducer with programmable transfer curve matching pedal travel profile. Use Value: 17-point linearization compensates for cam geometry and magnet misalignment, maintaining <1% full-scale error over lifetime. |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Measuring steering angle for EPS assist and lane-keeping functions across −40°C to +160°C under hood conditions. IC Role / Device Role / Timing Role: High-temperature-stable Triaxis® sensor delivering continuous 360° absolute angle with <240 µs latency (Filter 0). Use Value: SMP-3 packaging withstands thermal shock; ratiometric output rejects battery voltage fluctuations during cranking. |
Use Scenario: Monitoring suspension travel in adaptive damping systems where corrosion resistance and compact size are critical. IC Role / Device Role / Timing Role: Compact PCB-less position sensor mounted directly on suspension linkages using axial-field magnet coupling. Use Value: DMP-4/SMP-3 footprint compatibility allows drop-in replacement; ±1 T magnetic range accommodates small, cost-effective magnets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar magnetic position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90421GDC-ADC-000-RE | SOIC-8 package with 8 pins (VDD, OUT, VSS, VDEC, N.C., Test1/2); requires external decoupling capacitor | Standard PCB-mount implementation; suited for prototyping and legacy board reuse | Select when board space permits and external capacitor placement is acceptable |
| MLX90421GVD-ADC-000-RE | SMP-4 dual-die package with 4 terminals (VDD, VSS, OUT1, OUT2); provides hardware redundancy and inter-die isolation | ASIL C/D system integration requiring cross-checking outputs; used in steer-by-wire and brake-by-wire | Select when functional safety demands dual-channel comparison or fault-tolerant architecture |
Compared with MLX90421GVE-ADC-000-RE, the SOIC-8 variant offers greater layout flexibility but increases component count and thermal resistance, while the SMP-4 variant adds redundancy overhead and doubles supply current - making the SMP-3 version optimal for cost-sensitive, space-constrained ASIL B applications like throttle and pedal sensing.
Availability
MLX90421GVE-ADC-000-RE is available at Aetrix Electronics and suitable for automotive throttle position sensing, pedal position monitoring, and steering angle measurement requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90421GVE-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 driver ICs, with R&D centers in Europe and manufacturing partnerships in Asia.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for safety-critical automotive subsystems, emphasizing ASIL-compliant signal integrity, high-temperature resilience, and PCB-less integration for next-generation electrified powertrains.
FAQ
What is the operating temperature range of the MLX90421GVE-ADC-000-RE?
The MLX90421GVE-ADC-000-RE operates from −40°C to +160°C ambient temperature and is qualified per AEC-Q100 Grade 0. Its SMP-3 package supports high-temperature extension up to +180°C for limited durations (≤250 h), with degraded performance parameters documented in the datasheet's Section 4.1.
Does the MLX90421GVE-ADC-000-RE require external decoupling capacitors?
No - the MLX90421GVE-ADC-000-RE in SMP-3 packaging integrates decoupling capacitance internally. Unlike the SOIC-8 (DC) or TSSOP-16 (GO) variants, it does not require an external VDEC capacitor, simplifying layout and reducing BOM count for compact, PCB-less installations.
How is the output of the MLX90421GVE-ADC-000-RE configured for analog vs. PWM mode?
The MLX90421GVE-ADC-000-RE output mode is programmed via its non-volatile memory during end-of-line calibration. The same OUT pin delivers either a ratiometric analog voltage (0.5–99% VDD) or a PWM signal (100–2000 Hz), with configuration retained across power cycles - no external mode-select pins or resistors are needed.
What safety mechanisms are implemented in the MLX90421GVE-ADC-000-RE for ASIL B compliance?
The MLX90421GVE-ADC-000-RE implements ASIL B safety mechanisms including memory ECC, CRC-protected configuration registers, watchdog timers (AWD/IWD), broken-wire detection on VSS/VDD, and diagnostic cycle timing (DCTANA = 10.9 ms). These are documented in Section 14 of the datasheet and validated per ISO 26262 SEooC requirements.
Can the MLX90421GVE-ADC-000-RE be used for linear position sensing?
Yes - the MLX90421GVE-ADC-000-RE supports both absolute rotary (0–360°) and absolute linear position sensing modes. Its Triaxis® Hall front end captures Bx, By, and Bz components, allowing position calculation from magnet translation along any axis when paired with appropriate magnetic circuit design per Section 1 of the datasheet.
MLX90421GVE-ADC-000-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 3-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-3
MLX90421GVE-ADC-000-RE FAQ
1.How can I place an order for MLX90421GVE-ADC-000-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVE-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 MLX90421GVE-ADC-000-RE reliable?
The price and inventory of MLX90421GVE-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 MLX90421GVE-ADC-000-RE is usually 5 days.
3.What payment methods are accepted for MLX90421GVE-ADC-000-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVE-ADC-000-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVE-ADC-000-RE?
MLX90421GVE-ADC-000-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVE-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 MLX90421GVE-ADC-000-RE?
For technical support, including MLX90421GVE-ADC-000-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVE-ADC-000-RE requirements.
6.How does Aetrix verify that MLX90421GVE-ADC-000-RE is sourced from the original manufacturer or authorized distributors?
All MLX90421GVE-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 MLX90421GVE-ADC-000-RE meets industry standards.
7.What is the process for return or replacement of MLX90421GVE-ADC-000-RE?
All MLX90421GVE-ADC-000-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVE-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 MLX90421GVE-ADC-000-RE part is unused and in its original packaging.
Return procedure for MLX90421GVE-ADC-000-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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