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Melexis Technologies NV MLX90421GVE-ADC-000-SP
- Part No.:
- MLX90421GVE-ADC-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SIP Module
- Datasheet:
-
MLX90421GVE-ADC-000-SP.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 3SMP
- Quantity:
- Payment:
- Shipping:
Inventory:4,544
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Product details
Overview
MLX90421GVE-ADC-000-SP 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 safety compliance per ISO 26262 as a Safety Element out of Context. It is used in automotive throttle, pedal, and steering wheel position sensing.
For engineers reviewing the MLX90421GVE-ADC-000-SP datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SMP-3), confirmed pin functions (VDD/OUT/VSS), real-world accuracy specs (±0.5° typical angular INL), functional safety context (ASIL B SEooC), and validated alternative options for redundant or PCB-less implementations.
Technical Context
The MLX90421GVE-ADC-000-SP integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic field components, a DSP for on-chip signal processing, and a programmable output stage supporting either ratiometric analog voltage or PWM. Its architecture enables absolute position calculation from magnet motion without mechanical contact.
It features factory-trimmable timing (24 MHz main clock ±1% at 35°C), configurable filtering (three filter settings affecting latency and step response), and programmable diagnostics including broken-wire detection with defined voltage thresholds (e.g., BVSSPD = 1.2%VDD for broken VSS with RL ≤ 25 kΩ). All functionality is implemented within a single-die SMP-3 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40°C to +160°C - qualified for under-hood automotive use; extended operation up to +180°C supported only in SMP-3/SMP-4/DMP-4 packages |
| Output Type | Ratiometric analog or PWM - analog output saturates at 0.5–1.2%VDD (low) and 97–99%VDD (high); PWM frequency adjustable 100–2000 Hz with ±1% initial tolerance |
| Accuracy | ±0.5° typical integral non-linearity (INL) - enables high-fidelity angular position feedback in throttle and pedal sensors |
| Supply Current | 7.5–10.0 mA - single-die power draw enabling low-heat dissipation in compact SMP-3 footprint |
| Linearization | 17-point programmable transfer characteristic - allows post-assembly calibration to compensate for magnet and mechanical tolerances |
| Safety Certification | ISO 26262 ASIL B SEooC - supports integration into ASIL B systems without requiring additional hardware-level fault containment |
| Magnetic Range | ±1 T maximum flux density - compatible with standard NdFeB magnets in rotary and linear configurations |
Pinout & Package
SMP-3 is a PCB-less single-mold package with three solderable terminals: VDD (supply), OUT (ratiometric analog or PWM output), and VSS (ground). It integrates decoupling capacitance internally and requires no external PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Accepts 4.5–5.5 V; internal regulator generates 3.3 V analog reference; supports transient overvoltage up to 28 V for <60 s |
| 2 - OUT | Programmable output | Configurable as open-drain NMOS (pull-up to Vext ≤ 18 V), push-pull, or ratiometric analog; supports diagnostic pull-up/pull-down modes |
| 3 - VSS | Ground reference | Common return for supply and output; used in broken-wire diagnostics (e.g., BVSSPD threshold triggers on VSS loss) |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous measurement of Bx, By, Bz enables robust absolute angle calculation independent of magnet axial misalignment |
| On-Chip DSP Processing | Real-time computation of position from raw Hall data eliminates need for external microcontroller-based interpolation |
| 17-Point Programmable Linearization | Post-assembly calibration compensates for system-level non-idealities (e.g., magnet eccentricity, air gap variation) |
| Integrated Diagnostics | Built-in broken-wire detection (VDD/VSS loss), watchdog timers, and CRC-protected memory ensure fail-safe behavior in safety-critical applications |
| PCB-less SMP-3 Packaging | Direct-mount 3-terminal form factor reduces bill-of-materials and assembly steps versus SOIC-8 or TSSOP-16 alternatives |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal rotation angle in gasoline/diesel powertrains for precise engine torque control. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing real-time analog voltage output synchronized to ECU sampling clocks. Use Value: ±0.5° INL and ASIL B compliance enable direct integration into ASIL B powertrain control loops without external redundancy. |
Use Scenario: Detecting brake or clutch pedal travel in passenger vehicles for brake-by-wire or transmission shift logic. IC Role / Device Role / Timing Role: Linear-to-rotary position transducer converting pedal pivot motion into calibrated analog/PWM signal. Use Value: SMP-3's PCB-less design withstands high-vibration environments while maintaining stable output under thermal cycling (−40°C to +160°C). |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Measuring absolute steering angle for electronic stability control (ESC) and lane-keeping assist (LKA) systems. IC Role / Device Role / Timing Role: High-accuracy angular sensor delivering sub-degree resolution via programmable 17-point linearization. Use Value: On-chip DSP and Triaxis® technology reject stray fields and mounting misalignment-critical for safety-critical ADAS functions. |
Use Scenario: Monitoring suspension travel in adaptive damping or active ride height systems for luxury and off-road vehicles. IC Role / Device Role / Timing Role: Absolute linear position sensor using magnet translation across sensor axis; configured via same firmware as rotary mode. Use Value: Ratiometric output ensures immunity to supply rail fluctuations common in 12 V vehicle electrical systems. |
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, Test2); includes dedicated decoupling and test pins | Requires PCB layout and external capacitors; suited for prototyping or designs needing factory test access | Select when board space permits and diagnostic flexibility (e.g., test pin monitoring) is required |
| MLX90421GVD-ADC-000-RE | SMP-4 dual-die package with two independent outputs (OUT1/OUT2), isolated ground paths, and redundancy support | Enables ASIL D system architectures via dual-channel comparison; higher pin count (4 terminals) and cost | Select when functional safety requirements exceed ASIL B or dual-output redundancy is mandated |
Compared with MLX90421GVE-ADC-000-SP, the SOIC-8 variant offers greater layout flexibility but adds PCB area and external components, while the SMP-4 version delivers hardware-level fault tolerance at the expense of size and cost-making the SMP-3 the optimal balance for ASIL B single-channel applications requiring minimal footprint and zero-PCB integration.
Availability
MLX90421GVE-ADC-000-SP is available at Aetrix Electronics and suitable for automotive throttle position sensing, pedal position sensing, and steering angle measurement requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90421GVE-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 core expertise in Hall-effect and Triaxis® technologies.
The MLX90421 product line delivers high-accuracy, safety-certified position sensing for automotive powertrain and chassis systems, designed specifically for non-contact, high-reliability angular and linear measurement in harsh environments.
FAQ
What is the package type and terminal configuration of the MLX90421GVE-ADC-000-SP?
The MLX90421GVE-ADC-000-SP uses the SMP-3 (Single-Mold Package) - a PCB-less, three-terminal solution with VDD, OUT, and VSS pins arranged in a compact inline formation. It integrates internal decoupling capacitance and requires no external PCB, making it ideal for direct mounting onto harness connectors or metal substrates in space-constrained automotive modules.
Does the MLX90421GVE-ADC-000-SP support both analog and PWM output modes?
Yes, the MLX90421GVE-ADC-000-SP supports both ratiometric analog voltage output (0.5–1.2%VDD low, 97–99%VDD high) and programmable PWM output (100–2000 Hz). The output mode is configured during programming - no hardware change is needed. The analog output provides immediate position data with 228–240 μs latency (filter 0), while PWM offers digital noise immunity in electrically noisy environments.
What safety certifications apply to the MLX90421GVE-ADC-000-SP?
The MLX90421GVE-ADC-000-SP is certified to ISO 26262 ASIL B as a Safety Element out of Context (SEooC) and qualified to AEC-Q100 Grade 0 (−40°C to +160°C). This means it can be integrated into ASIL B systems without requiring additional hardware-level fault containment mechanisms, and its qualification covers full automotive under-hood temperature operation.
How is linearization implemented in the MLX90421GVE-ADC-000-SP?
The MLX90421GVE-ADC-000-SP features a 17-point programmable linearization function stored in NVRAM. After mechanical assembly, users can calibrate the device by measuring actual position vs. output across the full range and writing correction points. This compensates for magnet non-uniformity, air gap variation, and mechanical tolerances - significantly improving system-level accuracy without altering hardware.
Can the MLX90421GVE-ADC-000-SP operate above 160°C?
Yes - the MLX90421GVE-ADC-000-SP supports high-temperature extension up to +180°C for ≤250 hours, but only in SMP-3, SMP-4, and DMP-4 packages (not SOIC-8 or TSSOP-16). At 180°C, supply voltage must remain within 4.5–5.5 V, and performance parameters such as output drive strength and timing drift are degraded per Table 10 in the datasheet.
MLX90421GVE-ADC-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 3-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-3
MLX90421GVE-ADC-000-SP FAQ
1.How can I place an order for MLX90421GVE-ADC-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVE-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 MLX90421GVE-ADC-000-SP reliable?
The price and inventory of MLX90421GVE-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 MLX90421GVE-ADC-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90421GVE-ADC-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVE-ADC-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVE-ADC-000-SP?
MLX90421GVE-ADC-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVE-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 MLX90421GVE-ADC-000-SP?
For technical support, including MLX90421GVE-ADC-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVE-ADC-000-SP requirements.
6.How does Aetrix verify that MLX90421GVE-ADC-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90421GVE-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 MLX90421GVE-ADC-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90421GVE-ADC-000-SP?
All MLX90421GVE-ADC-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVE-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 MLX90421GVE-ADC-000-SP part is unused and in its original packaging.
Return procedure for MLX90421GVE-ADC-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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