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Melexis Technologies NV MLX90421GDC-ADC-000-SP
- Part No.:
- MLX90421GDC-ADC-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90421GDC-ADC-000-SP.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,670
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Product details
Overview
MLX90421GDC-ADC-000-SP 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 automotive throttle and pedal systems.
For engineers reviewing the MLX90421GDC-ADC-000-SP datasheet, pinout, applications, or equivalent options, key selection criteria include its SOIC-8 package, Triaxis® 3D magnetic field sensitivity (Bx, By, Bz), ASIL B safety element out of context compliance, 17-point programmable linearization, and dual-output mode flexibility.
Technical Context
The MLX90421GDC-ADC-000-SP implements a Triaxis® Hall architecture that simultaneously measures all three orthogonal magnetic flux components (Bx, By, Bz) to compute absolute angular or linear position without mechanical contact. Its on-chip DSP performs real-time vector calculation and multi-point linearization using up to 17 user-programmable points.
It supports two configurable output modes: ratiometric analog voltage (0.5–99% VDD) or PWM (100–2000 Hz) with programmable frequency and duty cycle. The device includes integrated diagnostics-broken-wire detection, supply monitoring, and fail-safe state activation within 5–33 ms-and operates across a 4.5–5.5 V supply range with 7.5–10.0 mA current draw.
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 DMP-4/SMP-3/SMP-4 packages |
| Output Type | Ratiometric analog (0.5–99% VDD) or PWM (100–2000 Hz); selectable post-assembly |
| Angular Accuracy | ±0.5° typical over full 0–360° range with 17-point linearization enabled |
| Supply Voltage | 4.5–5.5 V; absolute max 37 V (≤60 s) |
| Supply Current | 7.5–10.0 mA at 5 V; enables low-power automotive subsystem integration |
| Magnetic Sensing | Triaxis® 3D Hall front end measuring Bx, By, Bz simultaneously for robust position computation |
| Safety Certification | ISO 26262 ASIL B Safety Element out of Context; supports functional safety decomposition |
Pinout & Package
MLX90421GDC-ADC-000-SP uses the SOIC-8 (DC) RoHS-compliant surface-mount package (5.3 mm × 6.2 mm, 1.75 mm height), optimized for high-temperature automotive PCB mounting with internal decoupling and factory-test pins grounded in application mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | 4.5–5.5 V nominal supply; supports transient overvoltage up to 37 V (≤60 s) |
| 2 - Test1 | Factory test pin | Internally grounded in application mode; tie to PCB ground for EMC improvement |
| 3 - Test2 | Factory test pin | Internally grounded in application mode; tie to PCB ground for EMC improvement |
| 4 - N.C. | No connection | Not bonded; must be connected to ground per EMC guidelines |
| 5 - OUT | Programmable output | Configurable as ratiometric analog or PWM; open-drain NMOS or push-pull capable |
| 6 - N.C. | No connection | Not bonded; must be connected to ground per EMC guidelines |
| 7 - VDEC | Internal regulator decoupling | Requires 100 nF ceramic capacitor to ground for stable 3.3 V internal analog rail |
| 8 - VSS | Ground reference | Primary return path for supply and signal; critical for broken-wire diagnostic accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® 3D magnetic sensing | Enables single-chip absolute position measurement from arbitrary magnet orientations without external concentrators |
| 17-point programmable linearization | Compensates for mechanical/magnetic nonlinearity in final assembly, improving system-level accuracy without recalibration |
| ASIL B Safety Element out of Context | Provides certified safety mechanisms (CRC, watchdogs, diagnostics) enabling reuse in ASIL B/C architectures without requalification |
| Dual-output mode flexibility | Field-selectable analog or PWM output allows same BOM part to serve multiple ECU interface requirements |
| High-temp operation (−40 to +160 °C) | Validated for under-hood automotive locations including throttle bodies, transmission linkages, and suspension modules |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal angle in gasoline/diesel powertrains for precise air-fuel ratio control and torque management. IC Role / Device Role / Timing Role: Absolute angular position sensor providing real-time 0–360° throttle valve angle with <240 µs latency and ±0.5° accuracy. Use Value: Enables closed-loop engine control meeting Euro 6/LEV III emissions standards via deterministic analog/PWM output timing and ASIL B diagnostics. | Use Scenario: Detecting brake or accelerator pedal displacement in brake-by-wire and electronic throttle control systems. IC Role / Device Role / Timing Role: Linear or angular position transducer delivering ratiometric analog output synchronized to ECU sampling clocks. Use Value: Supports fail-operational redundancy when paired with second MLX90421 die; broken-wire detection ensures safe default states during cable faults. |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Measuring steering wheel rotation angle for electric power steering (EPS) assist torque calculation and lane-keeping assist. IC Role / Device Role / Timing Role: High-accuracy absolute rotary sensor with 17-point linearization compensating for gear backlash and magnet misalignment. Use Value: Delivers <0.5° total error over lifetime and temperature, enabling precise EPS motor control and ADAS feature reliability. | Use Scenario: Monitoring suspension travel in adaptive damping and active ride height systems for SUVs and commercial vehicles. IC Role / Device Role / Timing Role: Non-contacting linear position sensor detecting magnet displacement along shock absorber shafts. Use Value: Resists vibration, dust, and moisture ingress due to SOIC-8 hermetic molding and −40 to +160 °C rating, eliminating potentiometer wear-out failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar magnetic position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90422GDC-ADC-000-SP | Same SOIC-8 package and Triaxis® core, but adds dual-die redundancy and enhanced diagnostics for ASIL C decomposition | Required where full dual-channel fault tolerance is mandated (e.g., steer-by-wire primary sensors) | Select MLX90422 if system-level ASIL C compliance is required; otherwise MLX90421GDC-ADC-000-SP provides optimal cost/performance for ASIL B applications |
| TLE5012BE1000XUMA1 | Infineon 3D Hall sensor with SPI interface only; no analog/PWM output; requires external MCU for signal processing | Suitable for designs with existing SPI-capable microcontrollers and space for additional passive filtering components | Choose TLE5012B only when SPI integration is preferred and board area permits added support circuitry; MLX90421GDC-ADC-000-SP reduces BOM count with integrated output drivers |
Compared with MLX90422GDC-ADC-000-SP, the MLX90421GDC-ADC-000-SP offers lower system cost and simpler layout by omitting redundant die while retaining identical accuracy, temperature range, and ASIL B safety certification. Against TLE5012BE1000XUMA1, it eliminates external signal conditioning and provides direct analog/PWM compatibility with legacy ECU inputs.
Availability
MLX90421GDC-ADC-000-SP 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 MLX90421GDC-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 intelligent sensors and driver ICs for automotive and industrial applications, with expertise in magnetic sensing, infrared thermometry, and automotive ASICs.
The MLX90421 product line delivers Triaxis® 3D Hall-based absolute position sensing for safety-critical automotive subsystems-including powertrain, chassis, and ADAS-where contactless, high-accuracy, and ASIL-compliant operation is mandatory.
FAQ
What output modes does the MLX90421GDC-ADC-000-SP support?
The MLX90421GDC-ADC-000-SP supports two factory-configurable output modes: ratiometric analog voltage (0.5–99% of VDD) and pulse-width modulated (PWM) signal (100–2000 Hz). Output mode selection is performed during programming after assembly, enabling one BOM part to serve both analog-input and digital-input ECUs without hardware changes. The MLX90421GDC-ADC-000-SP's output driver supports push-pull or open-drain NMOS configurations depending on external pull-up conditions.
How is the MLX90421GDC-ADC-000-SP qualified for automotive use?
The MLX90421GDC-ADC-000-SP is AEC-Q100 Grade 0 qualified (−40 °C to +160 °C) and certified as an ISO 26262 ASIL B Safety Element out of Context. It includes built-in diagnostics such as broken-wire detection on VDD/VSS lines, supply voltage monitoring, and fail-safe state activation within 5–33 ms. These features allow the MLX90421GDC-ADC-000-SP to be integrated into ASIL B systems without requiring additional safety hardware, reducing validation effort for automotive Tier 1 suppliers.
What magnetic configurations does the MLX90421GDC-ADC-000-SP support?
The MLX90421GDC-ADC-000-SP supports both absolute rotary (0–360°) and absolute linear position sensing via Triaxis® 3D Hall technology, which measures Bx, By, and Bz components simultaneously. Users configure axis selection and transfer characteristics during programming to match magnet geometry-e.g., diametrically magnetized ring for rotary or side-magnetized rod for linear motion. The MLX90421GDC-ADC-000-SP achieves ±0.5° angular accuracy with 17-point linearization enabled, eliminating need for external calibration fixtures.
Can the MLX90421GDC-ADC-000-SP operate above 160 °C?
Yes-the MLX90421GDC-ADC-000-SP supports extended operation up to +180 °C for ≤250 hours in DMP-4, SMP-3, and SMP-4 packages, though the MLX90421GDC-ADC-000-SP (SOIC-8) variant is rated for −40 °C to +160 °C per AEC-Q100 Grade 0. At 180 °C, electrical parameters degrade: supply voltage must remain ≤5.5 V, and output pull-up voltage is limited to VDD. This high-temperature capability enables use in proximity to exhaust manifolds or turbochargers where standard sensors fail.
What packaging and pinout does the MLX90421GDC-ADC-000-SP use?
The MLX90421GDC-ADC-000-SP uses the SOIC-8 (DC) package: 5.3 mm × 6.2 mm, 1.75 mm height, gull-wing leads. Its 8-pin layout includes VDD (pin 1), two factory test pins (pins 2–3, internally grounded in operation), N.C. (pins 4 and 6), analog/PWM output (pin 5), VDEC decoupling (pin 7), and VSS ground (pin 8). Per Melexis guidelines, all N.C. and test pins must be tied to PCB ground to ensure EMC robustness-a requirement explicitly validated in the MLX90421GDC-ADC-000-SP's automotive qualification testing.
MLX90421GDC-ADC-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Triaxis®
- 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:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 8-SOIC
MLX90421GDC-ADC-000-SP FAQ
1.How can I place an order for MLX90421GDC-ADC-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GDC-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 MLX90421GDC-ADC-000-SP reliable?
The price and inventory of MLX90421GDC-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 MLX90421GDC-ADC-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90421GDC-ADC-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GDC-ADC-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GDC-ADC-000-SP?
MLX90421GDC-ADC-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GDC-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 MLX90421GDC-ADC-000-SP?
For technical support, including MLX90421GDC-ADC-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GDC-ADC-000-SP requirements.
6.How does Aetrix verify that MLX90421GDC-ADC-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90421GDC-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 MLX90421GDC-ADC-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90421GDC-ADC-000-SP?
All MLX90421GDC-ADC-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GDC-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 MLX90421GDC-ADC-000-SP part is unused and in its original packaging.
Return procedure for MLX90421GDC-ADC-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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