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Melexis Technologies NV MLX90421GGO-ADC-000-SP
- Part No.:
- MLX90421GGO-ADC-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MLX90421GGO-ADC-000-SP.pdf
- Description:
- SENSOR MAG POS RATIO/PWM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,203
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Product details
Overview
MLX90421GGO-ADC-000-SP from Melexis is a dual-die Triaxis® Hall-based absolute rotary position sensor IC in TSSOP-16 package, operating from −40 °C to +160 °C, delivering ratiometric analog or PWM output with 17-point programmable linearization and ISO 26262 ASIL B safety certification for automotive throttle and pedal position sensing.
For engineers reviewing the MLX90421GGO-ADC-000-SP datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, package-specific pin definitions, real-world application mapping, and validated alternative options for high-reliability magnetic position sensing in AEC-Q100 Grade 0 systems.
Technical Context
The MLX90421GGO-ADC-000-SP integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic field components, a DSP for on-chip angle calculation, and dual-die redundancy architecture with isolated ground paths (VSS1/VSS2) and independent supply/decoupling pins (VDD1/VDD2, VDEC1/VDEC2). It supports continuous acquisition mode with 448 μs internal angle measurement period and programmable filtering (Filter 0–2).
Its output stage supports ratiometric analog voltage (0.5–99.0% VDD) or PWM (100–2000 Hz), both configurable post-assembly via end-user programmable NVRAM. Diagnostics include broken-wire detection (BVSSPD/BVDDPU) and fail-safe state activation within 5–33 ms after digital fault detection.
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 | 4.5–5.5 V - stable operation across battery voltage fluctuations in 12 V systems |
| Supply Current | 15–20 mA - dual-die current draw enables redundancy without excessive power overhead |
| Output Type | Ratiometric analog or PWM - selectable per application; analog output settles in ≤240 μs latency (Filter 0) |
| Accuracy | ±0.5° typical angular error - enabled by 17-point on-chip linearization and Triaxis® 3D field vector resolution |
| Safety Certification | ISO 26262 ASIL B SEooC - supports functional safety integration without requiring full SoC-level decomposition |
| Magnetic Range | ±1 T - accommodates strong rare-earth magnets in compact mechanical layouts |
Pinout & Package
TSSOP-16 (GO) package with 0.65 mm pitch, dual-die layout, and isolated die supply/ground paths for redundancy integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9 | VDEC1 / VDEC2 | Dedicated decoupling pins per die - mandatory local 100 nF ceramic placement ensures noise immunity for each sensor path |
| 2, 10 | VSS1 / VSS2 | Isolated ground returns - prevents single-point failure propagation between redundant channels |
| 3, 11 | VDD1 / VDD2 | Independent supply inputs - allows separate power rail monitoring and fault isolation |
| 6, 15 | OUT2 / OUT1 | Redundant analog/PWM outputs - supports cross-checking or voting logic in safety-critical systems |
| 4, 5, 12, 13, 7, 8, 14, 16 | Test11 / Test22 / Test12 / Test21 / N.C. | Factory test and no-connect pins - must be tied to PCB ground per EMC guidelines to suppress radiated emissions |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® 3D Hall Sensing | Simultaneous Bx/By/Bz measurement enables true absolute angle computation without external concentrators or multi-chip solutions |
| Dual-Die Redundancy | Full functional duplication with electrically isolated supply/ground paths meets ASIL B fault tolerance requirements for steering and braking subsystems |
| 17-Point Linearization | End-user programmable transfer curve corrects magnet nonlinearity and mechanical eccentricity errors post-assembly, improving system accuracy beyond ±0.3° |
| Broken-Wire Diagnostics | Detects open-circuit faults on VSS or VDD lines using passive diagnostic output levels (e.g., BVSSPD = 0.5–4.0% VDD) without added external circuitry |
| High-Temp Operation | Validated operation up to +160 °C ambient - suitable for engine bay, transmission, and exhaust proximity applications |
Applications
| Throttle Position Sensing | Pedal Position Sensing |
|---|---|
Use Scenario: Monitoring accelerator pedal angle in gasoline/diesel powertrains with mechanical linkage or drive-by-wire interface. IC Role / Device Role / Timing Role: Absolute rotary position sensor providing real-time angle feedback to ECU with <240 μs latency and ASIL B-compliant diagnostics. Use Value: Enables precise torque control and emission compliance while meeting ISO 26262 requirements for powertrain actuation. | Use Scenario: Detecting brake or clutch pedal travel in commercial vehicles with hydraulic or electro-hydraulic boosters. IC Role / Device Role / Timing Role: Dual-die redundant position transducer delivering synchronized analog/PWM outputs for cross-validation in safety-critical braking functions. Use Value: Eliminates need for external redundancy circuitry; reduces BOM count and improves fault coverage over single-die alternatives. |
| Steering Wheel Position | Transmission Gear Selector |
Use Scenario: Measuring steering column rotation for EPS assist torque calculation and ADAS lane-keeping input. IC Role / Device Role / Timing Role: High-accuracy (±0.5°) absolute angle sensor with programmable linearization compensating for gear backlash and magnet misalignment. Use Value: Supports smooth, jitter-free assist response and meets OEM requirements for 10-year field reliability in rotating shaft environments. | Use Scenario: Determining PRNDL position in automatic transmissions using rotary cam or linear slider mechanisms. IC Role / Device Role / Timing Role: Robust non-contact position detector immune to oil, dust, and vibration, operating continuously at 160 °C near gearbox housing. Use Value: Replaces potentiometers and optical encoders with higher MTBF, eliminating wear-out mechanisms and contact resistance drift. |
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-SP | Same TSSOP-16 dual-die package but with extended 0–100% duty cycle PWM output and enhanced diagnostics timing resolution | Preferred for new designs requiring tighter PWM timing control (ΔFPWM,T = ±2.5%) and faster fail-safe activation (TFSS = 5 ms min) | Select when upgrading legacy MLX90421 systems needing improved diagnostic coverage without PCB redesign |
| AMS30450-TS-1000 | Single-die TSSOP-16 Hall sensor with 12-bit SPI output; no ASIL B certification or dual-die redundancy | Suitable for non-safety-critical industrial rotary encoders where cost and SPI interface are prioritized over automotive qualification | Choose only for cost-sensitive non-automotive applications lacking functional safety requirements |
Compared with MLX90421GGO-ADC-000-SP, MLX90422GGO-ADC-000-SP offers tighter PWM stability and faster fault response but identical pinout and programming flow, while AMS30450-TS-1000 provides SPI digital output at lower cost but lacks redundancy, ASIL B, and analog/PWM flexibility.
Availability
MLX90421GGO-ADC-000-SP is available at Aetrix Electronics and suitable for automotive throttle position sensing, pedal position monitoring, and transmission gear selector applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 0 compliance.
Supply support for MLX90421GGO-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 design centers in Europe and manufacturing partnerships in Asia.
The MLX90421 product line delivers Triaxis®-based absolute position sensing for automotive powertrain, chassis, and body control modules, targeting applications demanding high temperature resilience, functional safety, and non-contact reliability.
FAQ
What is the maximum operating temperature for MLX90421GGO-ADC-000-SP?
The MLX90421GGO-ADC-000-SP is rated for continuous operation from −40 °C to +160 °C ambient temperature and qualified to AEC-Q100 Grade 0. It supports limited exposure up to +180 °C for ≤250 hours in SMP-3/SMP-4/DMP-4 packages - however, the TSSOP-16 (GO) variant used in MLX90421GGO-ADC-000-SP is specified only up to +160 °C per datasheet Section 4.
Does MLX90421GGO-ADC-000-SP support both analog and PWM output simultaneously?
No, MLX90421GGO-ADC-000-SP supports either ratiometric analog voltage or PWM output - not both concurrently. The output mode is configured during programming via its end-user programmable NVRAM. Each of the two dies in the TSSOP-16 package can be independently set to the same or different output types, enabling mixed-mode diagnostics in MLX90421GGO-ADC-000-SP implementations.
What is the purpose of the isolated VSS1 and VSS2 pins on MLX90421GGO-ADC-000-SP?
The isolated VSS1 and VSS2 pins provide separate ground return paths for each die in the dual-die TSSOP-16 package. This physical separation prevents fault propagation between redundant channels - for example, an open or short on one ground path does not disable the second channel. It is a foundational requirement for achieving ISO 26262 ASIL B compliance in MLX90421GGO-ADC-000-SP safety architectures.
Can MLX90421GGO-ADC-000-SP be programmed after soldering to the PCB?
Yes, MLX90421GGO-ADC-000-SP supports post-assembly programming via its I²C-compatible interface using Melexis' PTM (Programmable Transfer Matrix) toolset. This enables calibration of the 17-point linearization curve, output type selection, filter configuration, and diagnostic thresholds directly in the final application - critical for compensating mechanical tolerances and magnet variations in MLX90421GGO-ADC-000-SP deployments.
What packaging and tape-and-reel options are available for MLX90421GGO-ADC-000-SP?
MLX90421GGO-ADC-000-SP is supplied in TSSOP-16 (GO) package on tape-and-reel with 4,500 units per reel (packing code RE). The ordering suffix "-SP" indicates sample packaging - meaning smaller reels or cut-tape quantities for evaluation and prototyping, while full production orders use standard RE reels with traceable lot documentation.
MLX90421GGO-ADC-000-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 16-TSSOP (0.173", 4.40mm 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:
- 16-TSSOP
MLX90421GGO-ADC-000-SP FAQ
1.How can I place an order for MLX90421GGO-ADC-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90421GGO-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 MLX90421GGO-ADC-000-SP reliable?
The price and inventory of MLX90421GGO-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 MLX90421GGO-ADC-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90421GGO-ADC-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90421GGO-ADC-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90421GGO-ADC-000-SP?
MLX90421GGO-ADC-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90421GGO-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 MLX90421GGO-ADC-000-SP?
For technical support, including MLX90421GGO-ADC-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90421GGO-ADC-000-SP requirements.
6.How does Aetrix verify that MLX90421GGO-ADC-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90421GGO-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 MLX90421GGO-ADC-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90421GGO-ADC-000-SP?
All MLX90421GGO-ADC-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90421GGO-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 MLX90421GGO-ADC-000-SP part is unused and in its original packaging.
Return procedure for MLX90421GGO-ADC-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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