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Melexis Technologies NV MLX90421GVS-ADC-003-TU
- Part No.:
- MLX90421GVS-ADC-003-TU
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 4-SIP Module, Formed Leads
- Datasheet:
-
MLX90421GVS-ADC-003-TU.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 4DMPS
- Quantity:
- Payment:
- Shipping:
Inventory:1,032
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Product details
Overview
MLX90421GVS-ADC-003-TU from Melexis is a Triaxis® monolithic magnetic position sensor IC for absolute rotary position sensing, featuring ratiometric analog or PWM output, programmable 17-point linearization, and operation from −40 °C to +160 °C in DMP-4 package. It delivers ±0.5° angular accuracy over full scale with ISO 26262 ASIL B safety certification and AEC-Q100 Grade 0 qualification.
For engineers reviewing the MLX90421GVS-ADC-003-TU datasheet, pinout, applications, or equivalent options, this page provides verified technical context, exact pin definitions for DMP-4, real-world automotive use cases, and two validated alternative parts with documented functional and packaging differences.
Technical Context
The MLX90421GVS-ADC-003-TU integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic field components, a 12-bit ADC, a DSP for real-time signal processing, and a programmable output stage supporting either ratiometric analog voltage (0.5–99% VDD) or PWM (100–2000 Hz). Its internal architecture enables absolute angle calculation from magnet rotation without external computation.
It supports continuous acquisition mode with 448 μs internal angle measurement period and configurable filtering (Filter 0–2), delivering worst-case step response of 763–2223 μs depending on filter setting. Built-in diagnostics include broken-wire detection, watchdog timers, and memory ECC, all compliant with ISO 26262 ASIL B as a Safety Element out of Context.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40 °C to +160 °C; qualified for automotive under-hood use per AEC-Q100 Grade 0 |
| Output Type | Ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz); selectable post-assembly |
| Angular Accuracy | ±0.5° over full 0–360° range at 25 °C; includes INL/DNL compensation via 17-point linearization |
| Supply Voltage | 4.5–5.5 V; internal 3.3 V regulated analog rail (VDEC) with ±0.1 V tolerance |
| Supply Current | 7.5–10.0 mA (single-die DMP-4); enables low-power automotive subsystem integration |
| Safety Certification | ISO 26262 ASIL B Safety Element out of Context; includes diagnostic cycle time ≤19.7 ms |
| Magnetic Range | ±1 T (Bmax); supports robust operation with standard NdFeB magnets in compact air gaps |
Pinout & Package
DMP-4 (Dual Mold Package) is a PCB-less, surface-mount package with 4 leads, RoHS-compliant, optimized for high-volume automotive sensor modules. It features integrated decoupling capacitance and pin-to-pin compatibility with prior Triaxis® generations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Ground reference for analog and digital domains; must be connected to system ground for EMC compliance |
| 2 | VDD | Main supply input (4.5–5.5 V); powers internal regulator generating 3.3 V analog rail |
| 3 | OUT | Configurable output: ratiometric analog voltage or open-drain/Push-Pull PWM signal |
| 4 | VSS | Dedicated ground return path; dual VSS pins reduce impedance and improve noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous measurement of Bx, By, Bz enables true 3D magnetic field analysis for absolute angle/linear position without mechanical constraints |
| 17-Point Linearization | End-user programmable transfer characteristic corrects nonlinearity across full magnetic stroke-no external calibration required |
| Dual VSS Pins | Reduces ground loop impedance and improves EMC performance in noisy automotive environments (e.g., engine bay) |
| Integrated Diagnostics | Built-in broken-wire detection, watchdog timers, and memory ECC satisfy ASIL B fault coverage requirements without external circuitry |
| High-Temp Extension | Supports ambient operation up to +180 °C for <250 h in DMP-4 package-enables placement near exhaust manifolds or turbochargers |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Real-time detection of accelerator pedal angle in electric/hybrid powertrains to control torque delivery and regenerative braking. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing 0–360° angle data at ≥2.2 kHz update rate with <1 ms latency for closed-loop motor control. Use Value: Enables precise throttle mapping with ±0.5° accuracy and ASIL B diagnostics-reducing need for redundant sensors in functional safety architectures. |
Use Scenario: Monitoring brake or clutch pedal displacement in brake-by-wire and automated manual transmission systems. IC Role / Device Role / Timing Role: Linear position transducer using magnetic field vector projection; outputs analog voltage proportional to pedal travel distance. Use Value: Delivers fail-safe position feedback with broken-wire detection and 19.7 ms diagnostic cycle time-meeting ISO 26262 requirements for Category C systems. |
| Steering Wheel Angle Sensing | Ride Height Control |
Use Scenario: Measuring absolute steering wheel rotation for electronic stability control (ESC), lane-keeping assist (LKA), and torque overlay systems. IC Role / Device Role / Timing Role: High-accuracy rotary sensor mounted on steering column shaft; outputs synchronized PWM frames at 200 Hz for deterministic ECU sampling. Use Value: Provides ±0.5° full-scale accuracy and thermal drift compensation across −40 °C to +160 °C-ensuring consistent vehicle dynamics control in extreme climates. |
Use Scenario: Detecting suspension compression/expansion in adaptive air suspension systems for automatic ride height adjustment. IC Role / Device Role / Timing Role: Linear position sensor measuring magnet displacement along shock absorber axis; uses ratiometric analog output for noise-immune analog-to-digital conversion. Use Value: Eliminates potentiometer wear and contact bounce; DMP-4's PCB-less construction withstands vibration and thermal cycling in chassis-mounted applications. |
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 |
|---|---|---|---|
| MLX90422GVS-ADC-003-TU | Dual-die SMP-4 package with redundancy; 2 independent outputs (OUT1/OUT2); higher current draw (2 × 7.5–10 mA) | Required for ASIL D systems needing hardware redundancy; not pin-compatible with DMP-4 | Select when dual-channel fault-tolerant output is mandated by safety architecture-not for drop-in replacement |
| MLX90393ELW-ABA-000-TU | 3-axis Hall-based sensor with I²C/SPI digital interface; no analog/PWM output; ±0.3° accuracy; SOIC-16 package | Used where microcontroller-based signal conditioning is acceptable; lacks built-in linearization and ASIL B certification | Choose for flexible digital integration and lower cost where functional safety certification is not required |
Compared with MLX90421GVS-ADC-003-TU, the MLX90422GVS-ADC-003-TU adds hardware redundancy at the cost of doubled supply current and different pinout, while the MLX90393ELW-ABA-000-TU trades analog/PWM simplicity and ASIL B compliance for digital configurability and higher raw accuracy-making each suitable only for distinct safety and interface requirements.
Availability
MLX90421GVS-ADC-003-TU is available at Aetrix Electronics and suitable for throttle position sensing, pedal position sensing, steering angle monitoring, and ride height control requiring stable component supply in automotive OEM and Tier-1 production programs.
Supply support for MLX90421GVS-ADC-003-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 intelligent sensors and driver ICs for automotive, industrial, and consumer applications, with core expertise in magnetic sensing and embedded signal processing.
The MLX90421 product line delivers robust, safety-certified absolute position sensing for demanding automotive environments-designed specifically to replace contact-based potentiometers and enable next-generation electric powertrain and ADAS subsystems.
FAQ
What is the package type and lead count for MLX90421GVS-ADC-003-TU?
The MLX90421GVS-ADC-003-TU uses the DMP-4 (Dual Mold Package) with 4 leads: VSS, VDD, OUT, and VSS. This PCB-less, surface-mount package features integrated decoupling capacitance and is optimized for high-reliability automotive sensor modules. Pin 1 and Pin 4 are both ground terminals to minimize impedance and improve EMC performance in noisy environments.
Does MLX90421GVS-ADC-003-TU support both analog and PWM output simultaneously?
No, the MLX90421GVS-ADC-003-TU supports either ratiometric analog voltage output or PWM output-not both simultaneously. The output mode is selected during programming after assembly using Melexis' PTM software and remains fixed until reprogrammed. Default factory configuration is analog output, but users can configure it for PWM with frequencies from 100 Hz to 2000 Hz.
What is the angular accuracy specification for MLX90421GVS-ADC-003-TU over temperature?
The MLX90421GVS-ADC-003-TU achieves ±0.5° total angular error over full 0–360° range at 25 °C. Over the full operating temperature range (−40 °C to +160 °C), accuracy degrades to ±1.2° due to thermal drift of magnetic sensitivity and signal chain components-fully compensated by the 17-point programmable linearization function during end-of-line calibration.
Is MLX90421GVS-ADC-003-TU certified for functional safety applications?
Yes, the MLX90421GVS-ADC-003-TU is certified as an ISO 26262 ASIL B Safety Element out of Context (SEooC) and qualified to AEC-Q100 Grade 0. It includes built-in diagnostics such as broken-wire detection, watchdog timers, memory ECC, and a diagnostic cycle time of ≤19.7 ms-enabling its use in safety-critical automotive subsystems without requiring additional safety mechanisms at the system level.
Can MLX90421GVS-ADC-003-TU operate at temperatures above +160 °C?
Yes, the MLX90421GVS-ADC-003-TU supports high-temperature extension up to +180 °C for ≤250 hours in DMP-4 package, with degraded but functional performance. During this extended operation, supply voltage must remain within 4.5–5.5 V, and output pull-up voltage is limited to VDD. This capability enables placement near hot engine components where standard Grade 0 limits would otherwise restrict usage.
MLX90421GVS-ADC-003-TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 4-SIP Module, Formed Leads
- 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:
- 4-DMP
MLX90421GVS-ADC-003-TU FAQ
1.How can I place an order for MLX90421GVS-ADC-003-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVS-ADC-003-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 MLX90421GVS-ADC-003-TU reliable?
The price and inventory of MLX90421GVS-ADC-003-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90421GVS-ADC-003-TU is usually 5 days.
3.What payment methods are accepted for MLX90421GVS-ADC-003-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVS-ADC-003-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVS-ADC-003-TU?
MLX90421GVS-ADC-003-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVS-ADC-003-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 MLX90421GVS-ADC-003-TU?
For technical support, including MLX90421GVS-ADC-003-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVS-ADC-003-TU requirements.
6.How does Aetrix verify that MLX90421GVS-ADC-003-TU is sourced from the original manufacturer or authorized distributors?
All MLX90421GVS-ADC-003-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 MLX90421GVS-ADC-003-TU meets industry standards.
7.What is the process for return or replacement of MLX90421GVS-ADC-003-TU?
All MLX90421GVS-ADC-003-TU units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVS-ADC-003-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 MLX90421GVS-ADC-003-TU part is unused and in its original packaging.
Return procedure for MLX90421GVS-ADC-003-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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