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Melexis Technologies NV MLX90421GGO-ADC-000-RE
- Part No.:
- MLX90421GGO-ADC-000-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MLX90421GGO-ADC-000-RE.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
MLX90421GGO-ADC-000-RE from Melexis is a Triaxis® Hall-based monolithic magnetic position sensor IC for absolute angular rotary 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 - used in throttle, pedal, and steering wheel position sensing.
For engineers reviewing the MLX90421GGO-ADC-000-RE datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (TSSOP-16), dual-die redundancy architecture, real-time diagnostics timing (DCTDIG = 19.7 ms), fail-safe state duration (5–33 ms), and functional safety mechanisms aligned with automotive Grade 0 AEC-Q100 qualification.
Technical Context
The MLX90421GGO-ADC-000-RE implements a dual-die TSSOP-16 configuration with isolated power/ground domains (VDD1/VSS1 and VDD2/VSS2) and separate outputs (OUT1/OUT2), enabling hardware-level redundancy. Its Triaxis® front end measures Bx, By, and Bz components simultaneously, and internal DSP computes absolute angle using configurable axis selection and multi-point LNR calibration.
It supports continuous acquisition mode with 448 µs internal angle measurement period and offers programmable diagnostics including broken-wire detection on VDD/VSS lines. Output modes include ratiometric analog (0.5–99% VDD saturation) and PWM (100–2000 Hz, ±1% initial tolerance), both with configurable fail-safe behavior and high-temperature extension up to +180°C for SMP/DMP packages - though not applicable to this GO-package variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | −40°C to +160°C - qualified for under-hood automotive environments without derating |
| Supply Voltage | 4.5 V to 5.5 V - stable operation across battery voltage fluctuations in 12 V systems |
| Supply Current | 15–20 mA - doubled vs. single-die due to redundant die, impacts thermal design |
| Output Type | Ratiometric analog or PWM - selectable per application; analog enables direct ADC interface, PWM simplifies EMI-resistant transmission |
| PWM Frequency | 100–2000 Hz - adjustable for noise immunity vs. resolution trade-off; ±1% initial tolerance at 35°C |
| Digital Diagnostics DCT | 19.7 ms - deterministic interval between diagnostic checks, critical for ASIL B fault coverage timing |
| Fail-Safe Duration | 5–33 ms - fully programmable time from digital fault detection to valid output resumption |
Pinout & Package
TSSOP-16 (GO) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed thermal pad, RoHS-compliant, designed for dual-die redundancy with isolated supply/ground domains.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9 | VDEC1 / VDEC2 | Decoupling pins per die - require local 100 nF ceramic capacitors to stabilize internal analog regulators |
| 2, 10 | VSS1 / VSS2 | Ground terminals per die - must be routed separately to maintain isolation integrity for redundancy |
| 3, 11 | VDD1 / VDD2 | Supply inputs per die - enable independent power monitoring and fault containment |
| 6, 15 | OUT2 / OUT1 | Independent outputs per die - support cross-checking, voting logic, or dual-channel safety architectures |
| 4, 5, 12, 13, 7, 8, 14, 16 | Test11 / Test22 / Test12 / Test21 / N.C. | Factory test and no-connect pins - internally grounded in application mode; tie to PCB ground for EMC improvement |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous Bx/By/Bz measurement enables true 3D magnetic field analysis for robust absolute angle computation without mechanical constraints |
| Dual-Die Redundancy | Independent signal chains in one TSSOP-16 package meet ASIL B requirements via hardware diversity and fault isolation |
| 17-Point Programmable Linearization | Compensates for magnet nonlinearity and mechanical misalignment post-assembly, improving system accuracy beyond factory calibration |
| Broken-Wire Detection | Monitors VDD/VSS continuity on both dies and reports faults via passive diagnostic output levels (e.g., BVDDPU = 92.5–99.5% VDD) |
| High-Temperature Operation | Validated for continuous operation at +160°C ambient - essential for engine bay and transmission control applications |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Measures rotational angle of electronic throttle valve in gasoline/diesel engines under high-vibration, high-temperature conditions. IC Role / Device Role / Timing Role: Absolute angular position sensor providing real-time feedback to ECU for closed-loop air-fuel ratio control. Use Value: Dual-die redundancy ensures functional safety compliance (ASIL B), while 17-point linearization compensates for magnet aging and assembly tolerances. | Use Scenario: Detects accelerator/brake pedal rotation in EVs and ICE vehicles where precise torque mapping and fail-operational behavior are required. IC Role / Device Role / Timing Role: Primary position transducer feeding pedal angle data to vehicle dynamics controller with <33 ms fail-safe recovery. Use Value: Ratiometric analog output interfaces directly with 12-bit automotive ADCs; PWM option supports long-cable, noise-immune transmission. |
| Steering Wheel Position Sensing | Transmission Gear Selector Sensing |
Use Scenario: Monitors absolute angular position of steering column for EPS assist torque calculation and ADAS lane-keeping functions. IC Role / Device Role / Timing Role: Safety-critical angle input for steering angle estimation, requiring dual-channel validation and diagnostic coverage. Use Value: Isolated dual-die architecture (Risol ≥ 4 MΩ) enables independent fault detection per channel, satisfying ISO 26262 SEooC requirements. | Use Scenario: Determines gear selector position in automatic transmissions where mechanical potentiometers suffer wear and contamination. IC Role / Device Role / Timing Role: Non-contact absolute position sensor replacing legacy potentiometers with enhanced reliability and lifetime. Use Value: Programmable measurement range and transfer characteristic adapt to custom gear detent profiles without hardware change. |
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 |
|---|---|---|---|
| MLX90422GGO-ADC-000-RE | Same Triaxis® architecture and TSSOP-16 package but with extended 0–100% VDD analog output range and higher PWM frequency (up to 5 kHz) | Preferred for applications requiring wider dynamic range or faster update rates, e.g., high-bandwidth EPS or active suspension | Select MLX90422GGO-ADC-000-RE when full-scale analog swing or >2 kHz PWM is needed; otherwise MLX90421GGO-ADC-000-RE remains optimal for standard ASIL B throttle/pedal use cases |
| AMS AS5055A-BQFT | Single-die Hall-based encoder with SPI interface only; no analog/PWM output; no ASIL B certification; smaller QFN-16 package | Suitable for non-safety-critical industrial encoders or cost-sensitive consumer applications lacking automotive qualification | Choose AMS AS5055A-BQFT only for non-automotive designs where SPI interface suffices and functional safety is not required |
Compared with MLX90422GGO-ADC-000-RE, the MLX90421GGO-ADC-000-RE offers tighter integration of analog/PWM dual-output flexibility and proven ASIL B implementation, while AMS AS5055A-BQFT lacks redundancy, temperature rating, and automotive qualification - making MLX90421GGO-ADC-000-RE the only drop-in solution for production-grade automotive position sensing.
Availability
MLX90421GGO-ADC-000-RE is available at Aetrix Electronics and suitable for throttle position sensing, pedal position sensing, and steering angle measurement requiring stable component supply across automotive Tier-1 production programs.
Supply support for MLX90421GGO-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 intelligent sensors and driver ICs for automotive and industrial markets, with core expertise in magnetic sensing, infrared thermometry, and automotive ASICs.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for safety-critical automotive subsystems, targeting applications demanding ASIL B compliance, high-temperature resilience, and programmable calibration without external components.
FAQ
What is the package type and pin count of MLX90421GGO-ADC-000-RE?
The MLX90421GGO-ADC-000-RE uses a TSSOP-16 package with 16 leads and an exposed thermal pad. It houses two independent sensor dies with isolated supply, ground, and output paths - confirmed by pin definitions for VDD1/VSS1/OUT1 and VDD2/VSS2/OUT2 in the official datasheet revision 004.
Does MLX90421GGO-ADC-000-RE support both analog and PWM output simultaneously?
No, the MLX90421GGO-ADC-000-RE supports either ratiometric analog or PWM output - selected during programming, not concurrently. The datasheet specifies "ratiometric analog or PWM output" as mutually exclusive modes, with each die in the TSSOP-16 package capable of independent configuration.
What functional safety standard does MLX90421GGO-ADC-000-RE comply with?
The MLX90421GGO-ADC-000-RE is certified as a Safety Element out of Context (SEooC) per ISO 26262:2018, achieving ASIL B capability. This is explicitly stated in the datasheet's Features and Benefits section and validated through integrated diagnostics including broken-wire detection and programmable fail-safe timing.
Is MLX90421GGO-ADC-000-RE qualified to AEC-Q100, and if so, which grade?
Yes, the MLX90421GGO-ADC-000-RE is AEC-Q100 qualified for Grade 0, meaning it is rated for operation from −40°C to +160°C ambient temperature - confirmed in the datasheet's Features and Benefits and Ordering Information sections.
Can MLX90421GGO-ADC-000-RE be programmed after soldering into the final application?
Yes, the MLX90421GGO-ADC-000-RE supports end-user programming post-assembly, including 17-point linearization, output transfer characteristic, and diagnostic settings - as documented in Sections 12 and 13 of the datasheet, enabling system-level calibration to compensate for mechanical tolerances and magnet aging.
MLX90421GGO-ADC-000-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Series:
- Triaxis®
- 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:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 16-TSSOP
MLX90421GGO-ADC-000-RE FAQ
1.How can I place an order for MLX90421GGO-ADC-000-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GGO-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 MLX90421GGO-ADC-000-RE reliable?
The price and inventory of MLX90421GGO-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 MLX90421GGO-ADC-000-RE is usually 5 days.
3.What payment methods are accepted for MLX90421GGO-ADC-000-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GGO-ADC-000-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GGO-ADC-000-RE?
MLX90421GGO-ADC-000-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GGO-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 MLX90421GGO-ADC-000-RE?
For technical support, including MLX90421GGO-ADC-000-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GGO-ADC-000-RE requirements.
6.How does Aetrix verify that MLX90421GGO-ADC-000-RE is sourced from the original manufacturer or authorized distributors?
All MLX90421GGO-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 MLX90421GGO-ADC-000-RE meets industry standards.
7.What is the process for return or replacement of MLX90421GGO-ADC-000-RE?
All MLX90421GGO-ADC-000-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GGO-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 MLX90421GGO-ADC-000-RE part is unused and in its original packaging.
Return procedure for MLX90421GGO-ADC-000-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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