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Melexis Technologies NV MLX90421GVE-ADC-000-RX
- Part No.:
- MLX90421GVE-ADC-000-RX
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 3-SIP Module
- Datasheet:
-
MLX90421GVE-ADC-000-RX.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 3SMP
- Quantity:
- Payment:
- Shipping:
Inventory:4,718
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Product details
Overview
MLX90421GVE-ADC-000-RX 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. It is used in throttle, pedal, and steering wheel position sensing in automotive powertrain and chassis systems.
For engineers reviewing the MLX90421GVE-ADC-000-RX datasheet, pinout, applications, or equivalent options, key selection criteria include its SMP-3 package footprint, single-die redundancy-free architecture, 4.5–5.5 V supply range, ±0.5° typical angular accuracy, and factory-programmable transfer characteristic for magnet calibration post-assembly.
Technical Context
The MLX90421GVE-ADC-000-RX integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic field components, a 12-bit ADC, a DSP for real-time angle computation, and a programmable output stage supporting either ratiometric analog voltage (0.5–99% VDD) or PWM (100–2000 Hz). Its signal path enables absolute position calculation without external magnets or mechanical stops.
It implements on-chip diagnostics including broken-wire detection, watchdog timers, and memory ECC, with configurable fault handling intervals. The device uses internal regulated 3.3 V analog supply (VDEC) and supports high-temperature extension up to +180°C only in SMP-3, SMP-4, and DMP-4 packages - not applicable to this SOIC-8/TSSOP-16 excluded variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - stable operation across automotive battery transients; supports standard 5 V rail design. |
| Operating Temperature | −40°C to +160°C - qualified for under-hood automotive applications including transmission and engine control. |
| Output Type | Ratiometric analog or PWM - dual-mode flexibility; analog output scales with VDD; PWM frequency programmable 100–2000 Hz. |
| Angular Accuracy | ±0.5° typical - enables high-fidelity closed-loop control in throttle and pedal systems without external calibration. |
| Linearization Points | Up to 17-point programmable - compensates for magnet nonlinearity and air-gap variation during final system calibration. |
| Safety Certification | ISO 26262 ASIL B SEooC - provides safety element out of context for integration into ASIL B or C systems with customer-defined safety mechanisms. |
| AEC-Q100 Grade | Grade 0 - validated for continuous operation at junction temperatures up to +175°C. |
Pinout & Package
MLX90421GVE-ADC-000-RX uses the SMP-3 (Single-Mold Package) - a PCB-less, 3-terminal surface-mount package with integrated decoupling capacitance, optimized for compact, cost-sensitive automotive sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power Supply Input | Accepts 4.5–5.5 V; powers internal regulator generating 3.3 V analog supply (VDEC); requires no external bulk capacitor due to integrated capacitance. |
| 2 (OUT) | Programmable Output Terminal | Delivers ratiometric analog voltage (0.5–99% VDD) or PWM signal; open-drain NMOS or push-pull capable; supports external pull-up to ≤18 V. |
| 3 (VSS) | Ground Reference | Primary ground return for analog and digital circuits; must be connected to low-impedance system ground to ensure accuracy and EMC robustness. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous measurement of Bx, By, Bz enables true 3D magnetic field analysis - eliminates need for precise magnet alignment in rotary/linear configurations. |
| On-Chip DSP Processing | Real-time angle computation and filtering (3 selectable filter settings) - reduces host MCU computational load and enables deterministic latency (228–240 μs typical). |
| Programmable Transfer Characteristic | 17-point linearization table stored in NVRAM - allows field calibration to compensate for mechanical tolerances, magnet aging, and temperature drift. |
| Integrated Diagnostics | Built-in broken-wire detection (VDD/VSS open), watchdog timers, and memory ECC - satisfies diagnostic coverage requirements for ASIL B functional safety architectures. |
| PCB-less SMP-3 Packaging | 3-pin molded leadframe with embedded capacitors - eliminates PCB assembly step, reduces BOM count, and improves thermal coupling for high-temp reliability. |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal angle in gasoline/diesel powertrains to determine engine torque demand. IC Role / Device Role / Timing Role: Absolute angular position sensor providing real-time, contactless feedback with <250 μs latency and ±0.5° accuracy. Use Value: Enables precise air-fuel ratio control and meets OBD-II diagnostic readiness requirements via on-chip broken-wire and watchdog diagnostics. | Use Scenario: Detecting brake or clutch pedal travel in electronic braking systems (EBS) and automated manual transmissions (AMT). IC Role / Device Role / Timing Role: Linear-to-angle converter using off-axis magnet configuration; outputs ratiometric analog signal synchronized to ECU sampling clock. Use Value: Supports fail-operational behavior through programmable diagnostics and ASIL B safety element status reporting. |
| Steering Wheel Position Sensing | Ride Height Control |
Use Scenario: Measuring absolute steering angle for electric power steering (EPS) assist algorithms and lane-keeping systems. IC Role / Device Role / Timing Role: High-accuracy rotary position sensor with 17-point linearization to correct for gear backlash and magnet eccentricity. Use Value: Delivers <0.3° RMS noise and supports functional safety decomposition by providing independent diagnostic status via PWM frame encoding. | Use Scenario: Monitoring suspension travel in adaptive damping and active ride height systems for SUVs and commercial vehicles. IC Role / Device Role / Timing Role: Linear position sensor using axial magnet motion; configured for 0–100 mm range with factory-trimmed transfer curve. Use Value: Eliminates potentiometer wear-out failure mode and withstands IP67+ environmental exposure due to SMP-3 hermetic molding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar magnetic position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90422GVE-ADC-000-RX | Dual-die SMP-4 package with redundant outputs; higher pin count (4-pin); includes isolation between dies. | Required for ASIL C systems needing hardware redundancy; supports dual-output voting logic. | Select MLX90422GVE-ADC-000-RX only when functional safety architecture mandates die-level redundancy. |
| TLV493DW2B6HTSA1 | Infineon 3D Hall sensor; I²C digital interface; no integrated DSP or programmable linearization; lower temp grade (−40°C to +125°C). | Suitable for non-safety-critical consumer or industrial encoders; requires external MCU for angle computation and calibration. | Choose TLV493DW2B6HTSA1 for cost-sensitive, non-automotive designs where digital interface and smaller footprint outweigh analog/PWM flexibility and ASIL compliance. |
Compared with MLX90421GVE-ADC-000-RX, the MLX90422GVE-ADC-000-RX adds hardware redundancy at the expense of pin count and layout area, while the TLV493DW2B6HTSA1 trades integrated signal processing and automotive qualification for lower unit cost and I²C configurability - making MLX90421GVE-ADC-000-RX optimal for single-die, analog/PWM-output, ASIL B-compliant automotive position sensing.
Availability
MLX90421GVE-ADC-000-RX is available at Aetrix Electronics and suitable for automotive throttle control, pedal sensing, steering angle monitoring, and ride height adjustment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90421GVE-ADC-000-RX 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 markets, with core expertise in magnetic sensing, infrared thermometry, and LED drive technology.
The MLX90421 product line delivers contactless absolute position sensing using Triaxis® Hall technology, designed specifically for high-reliability automotive applications including powertrain, chassis, and ADAS subsystems where precision, safety, and temperature resilience are critical.
FAQ
What output modes does the MLX90421GVE-ADC-000-RX support?
The MLX90421GVE-ADC-000-RX supports two configurable output modes: ratiometric analog voltage (0.5–99% of VDD) and pulse-width modulated (PWM) signal with frequency adjustable from 100 Hz to 2000 Hz. Both modes are programmable post-assembly via Melexis' PTC tool, and the device retains configuration in NVRAM. The analog output exhibits 90 V/ms slew rate into 100 nF load, while PWM timing includes configurable startup phases (Tstup1–Tstup3) and fail-safe state duration.
Is the MLX90421GVE-ADC-000-RX qualified for automotive use?
Yes, the MLX90421GVE-ADC-000-RX is AEC-Q100 Grade 0 qualified (−40°C to +160°C ambient) and certified as an ISO 26262 ASIL B Safety Element out of Context (SEooC). It includes on-chip diagnostics such as broken-wire detection, watchdog timers, and memory ECC, enabling integration into ASIL B or decomposed ASIL C systems. Its SMP-3 package is designed for high-vibration, high-temperature under-hood environments.
What package type is used by the MLX90421GVE-ADC-000-RX?
The MLX90421GVE-ADC-000-RX uses the SMP-3 (Single-Mold Package) - a 3-terminal, PCB-less surface-mount package with integrated decoupling capacitance. It features straight leads (Trim & Form STD0), measures 2.9 × 2.4 × 0.9 mm, and is RoHS compliant. Unlike SOIC-8 or TSSOP-16 variants, SMP-3 eliminates PCB assembly steps and enhances thermal performance for high-temp operation.
Can the MLX90421GVE-ADC-000-RX be calibrated after installation?
Yes, the MLX90421GVE-ADC-000-RX supports end-user programmable items including a 17-point linearization table, output transfer characteristic slope/offset, and filter configuration. Calibration is performed using Melexis' PTC programming tool via the output pin in programming mode. This enables system-level compensation for magnet nonlinearity, air-gap variation, and temperature drift without requiring pre-calibrated magnets or fixtures.
What is the supply current consumption of the MLX90421GVE-ADC-000-RX?
The MLX90421GVE-ADC-000-RX draws 7.5–10.0 mA typical supply current (IDD) over −40°C to +160°C at 4.5–5.5 V VDD. This value applies to the single-die SMP-3 variant; dual-die versions (e.g., MLX90422) draw approximately double. Current consumption remains stable across temperature and output mode - no significant increase occurs when enabling diagnostics or PWM output.
MLX90421GVE-ADC-000-RX 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-RX FAQ
1.How can I place an order for MLX90421GVE-ADC-000-RX through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GVE-ADC-000-RX 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-RX reliable?
The price and inventory of MLX90421GVE-ADC-000-RX 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-RX is usually 5 days.
3.What payment methods are accepted for MLX90421GVE-ADC-000-RX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GVE-ADC-000-RX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GVE-ADC-000-RX?
MLX90421GVE-ADC-000-RX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GVE-ADC-000-RX 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-RX?
For technical support, including MLX90421GVE-ADC-000-RX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GVE-ADC-000-RX requirements.
6.How does Aetrix verify that MLX90421GVE-ADC-000-RX is sourced from the original manufacturer or authorized distributors?
All MLX90421GVE-ADC-000-RX 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-RX meets industry standards.
7.What is the process for return or replacement of MLX90421GVE-ADC-000-RX?
All MLX90421GVE-ADC-000-RX units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GVE-ADC-000-RX, 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-RX part is unused and in its original packaging.
Return procedure for MLX90421GVE-ADC-000-RX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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