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Melexis Technologies NV MLX90426GDC-ACB-630-RE
- Part No.:
- MLX90426GDC-ACB-630-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90426GDC-ACB-630-RE.pdf
- Description:
- TRIAXIS MIDRANGE SENSOR FOR 360
- Quantity:
- Payment:
- Shipping:
Inventory:2,863
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Product details
Overview
MLX90426GDC-ACB-630-RE from Melexis is a Triaxis® monolithic magnetic position sensor IC for absolute angular rotary sensing (0°–360°) using differential Z-axis field detection. It delivers SENT output per SAE J2716 APR2016 (A.3/H.4 format), supports programmable 17-point linearization, and operates from −40°C to +160°C in SOIC-8 package. It enables non-contacting throttle, pedal, and steering wheel position sensing in automotive powertrain and chassis systems.
For engineers reviewing the MLX90426GDC-ACB-630-RE datasheet, pinout, applications, or equivalent options, key selection criteria include SENT protocol compliance, ASIL B safety qualification, stray-field robustness, 1.75 ms typical latency in synchronous mode, and SOIC-8 thermal performance up to +160°C ambient.
Technical Context
The MLX90426GDC-ACB-630-RE integrates a Triaxis® Hall front end, analog-to-digital signal conditioner, DSP-based angle calculation engine, and SENT output driver. Its architecture decodes absolute angular position from rotating on-axis magnets via differential Z-field sensing, with built-in filtering and programmable diagnostics.
It operates in continuous synchronous acquisition mode by default (294-tick SENT frame, 882–927 µs refresh), delivering two angle acquisitions per frame with 16-point DSP linearization. The device implements ISO 26262 ASIL B safety mechanisms including CRC, watchdog timers, and diagnostic cycle timing (DCTANA = 10.7 ms, DCTDIG = 19.7 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Protocol | SENT per SAE J2716 APR2016 A.3 (H.4) format with pause pulse; enables error-coded digital transmission to ECU. |
| Operating Temperature | −40°C to +160°C ambient; validated for automotive under-hood applications without derating. |
| Supply Voltage | 4.5 V to 5.5 V; internal regulator provides stable 3.3 V analog rail (VDEC = 3.2–3.4 V). |
| Latency (Typ.) | 1.75 ms in synchronous mode; defines maximum delay between magnet movement and valid SENT angle output. |
| Accuracy (INL) | ±0.5° over full 360° range at 25°C; ensures high-fidelity position feedback for closed-loop control. |
| Stray Field Robustness | Validated against external magnetic interference per specification; maintains accuracy in noisy automotive environments. |
| Functional Safety | ISO 26262 ASIL B Safety Element out of Context (SEooC); includes hardware-level fault detection and safe startup (TSafeStup = 18.9 ms). |
Pinout & Package
MLX90426GDC-ACB-630-RE is packaged in RoHS-compliant SOIC-8 (DC) with exposed pad not present; thermal performance rated for 160°C ambient operation. Pin assignments are optimized for minimal PCB footprint and EMC robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – VDD | Power supply input | Primary 4.5–5.5 V supply rail; powers all internal blocks including DSP and SENT driver. |
| 2 – Test1 | Factory test pin | Internally grounded in application mode; connect to PCB ground for optimal EMC. |
| 3 – Test2 | Factory test pin | Internally grounded in application mode; connect to PCB ground for optimal EMC. |
| 4 – N.C. | No connection | Unbonded pad; must be connected to ground per datasheet for EMC integrity. |
| 5 – OUT | Digital SENT output | Push-pull SENT signal output (0.5 V low / 4.1 V high); compliant with SAE J2716 level requirements. |
| 6 – N.C. | No connection | Unbonded pad; must be connected to ground per datasheet for EMC integrity. |
| 7 – VDEC | Analog decoupling | Internal 3.3 V regulated analog supply node; requires 100 nF ceramic capacitor to VSS. |
| 8 – VSS | Ground reference | Common return for power, analog, and digital circuits; critical for noise immunity and SENT signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Technology | Enables true 3D magnetic field sensing with differential Z-axis detection, eliminating need for external concentrators in on-axis rotary designs. |
| Programmable 17-point Linearization | Allows precise correction of mechanical nonlinearity in custom magnet assemblies without external calibration hardware. |
| SENT Output with Diagnostics | Delivers CRC-protected angle data plus embedded error codes (e.g., broken-wire detection at 99.5% VDD), reducing ECU software overhead. |
| AEC-Q100 Grade 0 Qualification | Validated for −40°C to +160°C operation with lifetime reliability testing, enabling use in engine bay and transmission control modules. |
| Stray Magnetic Field Immunity | Robust design maintains ±0.5° accuracy under specified external field interference, critical for multi-sensor vehicle architectures. |
Applications
| Pedal Position Sensing | Throttle Position Sensing |
|---|---|
Use Scenario: Detecting accelerator or brake pedal angle in drive-by-wire systems with redundant safety monitoring. IC Role / Device Role / Timing Role: Primary absolute angular position transducer providing SENT-encoded 0°–360° output synchronized to ECU sampling clocks. Use Value: Enables ASIL B-compliant pedal mapping with <1.75 ms latency and built-in diagnostics to satisfy ISO 26262 functional safety requirements. | Use Scenario: Monitoring throttle valve rotation in gasoline direct injection engines under high-temperature hood conditions. IC Role / Device Role / Timing Role: High-accuracy, stray-field-immune position sensor interfacing directly to powertrain ECUs via SENT bus. Use Value: Delivers ±0.5° linearity over full range at +160°C ambient, eliminating need for external temperature compensation or recalibration. |
| Steering Wheel Position Sensing | Ride Height Position Sensing |
Use Scenario: Measuring steering angle for electronic stability control (ESC) and lane-keeping assist (LKA) systems. IC Role / Device Role / Timing Role: Safety-critical angular sensor feeding real-time position data to domain controllers with fail-safe state activation (TFSS = 5–33 ms). Use Value: Integrates ASIL B safety mechanisms (watchdog, CRC, diagnostics) into single die, reducing system-level BOM and validation effort. | Use Scenario: Monitoring suspension travel in adaptive damping or air ride height control systems. IC Role / Device Role / Timing Role: Non-contacting rotary position detector mounted on shock absorber or control arm with minimal mechanical integration. Use Value: Supports ruggedized packaging (SOIC-8) and high-temp operation, enabling direct mounting near suspension components without heat shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar magnetic angular position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90422GDC-ABG-300-RE | Single-die Triaxis® sensor with PWM output instead of SENT; no ASIL B certification; lower max temp (150°C). | Limited to non-safety-critical applications like HVAC flap control; lacks SENT diagnostics and high-temp capability. | Select when SENT interface and ASIL B are unnecessary and cost sensitivity outweighs functional safety requirements. |
| AMS AS5055A-BQFT | 12-bit SPI-output magnetic encoder; no integrated SENT driver or ASIL B safety mechanisms; 125°C max ambient. | Suitable for industrial motor feedback but not automotive powertrain due to temperature and safety gaps. | Choose only for non-automotive contexts where SPI interface and lower ambient rating are acceptable. |
Compared with MLX90422GDC-ABG-300-RE and AMS AS5055A-BQFT, the MLX90426GDC-ACB-630-RE uniquely combines SENT protocol compliance, ASIL B SEooC qualification, and +160°C operation in a single SOIC-8 package-enabling drop-in deployment in safety-critical automotive position sensing without external safety hardware or signal conditioning.
Availability
MLX90426GDC-ACB-630-RE is available at Aetrix Electronics and suitable for automotive pedal position, throttle position, steering angle, and ride height sensing applications requiring stable component supply across extended temperature ranges and functional safety compliance.
Supply support for MLX90426GDC-ACB-630-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 magnetic sensing, infrared thermometry, and automotive ICs, with global manufacturing and automotive qualification expertise.
The MLX90426 belongs to Melexis' Triaxis® position sensor product line, engineered specifically for robust, non-contacting absolute angular measurement in harsh automotive environments where stray fields, temperature extremes, and functional safety are critical.
FAQ
What is the operating temperature range of the MLX90426GDC-ACB-630-RE?
The MLX90426GDC-ACB-630-RE is qualified for continuous operation from −40°C to +160°C ambient temperature, meeting AEC-Q100 Grade 0 requirements. It supports short-term exposure up to +180°C only in SMP-3/SMP-4 packages-not applicable to the SOIC-8 variant MLX90426GDC-ACB-630-RE. Thermal derating is not required within its rated range.
Does the MLX90426GDC-ACB-630-RE support SENT protocol configuration?
Yes, the MLX90426GDC-ACB-630-RE defaults to SENT with pause pulse (SAE J2716 APR2016 A.3/H.4 format) and supports user programming of frame structure, tick count, and diagnostic content. Configuration is performed via Melexis' PTC tool using the dedicated test pins, and settings are stored in on-chip NVRAM.
What safety certifications apply to the MLX90426GDC-ACB-630-RE?
The MLX90426GDC-ACB-630-RE is certified as an ISO 26262 ASIL B Safety Element out of Context (SEooC) and AEC-Q100 Grade 0 qualified. Its safety manual documents hardware fault tolerance, diagnostic coverage, and fault handling time intervals (e.g., FHTI ≤ 100 ms), enabling integration into ASIL B–D systems without additional safety hardware.
How does the MLX90426GDC-ACB-630-RE handle external magnetic interference?
The MLX90426GDC-ACB-630-RE uses Triaxis® differential Z-axis sensing and on-chip filtering to reject uniform external magnetic fields up to ±1 T. Its stray-field robustness is validated per specification and enables reliable operation near motors, solenoids, or adjacent sensors without shielding-critical for compact automotive module layouts.
What is the latency performance of the MLX90426GDC-ACB-630-RE in standard operation?
In its default continuous synchronous acquisition mode, the MLX90426GDC-ACB-630-RE achieves a typical latency of 1.75 ms (max 2.03 ms), defined as the average delay between magnet movement and valid SENT angle output. This value includes analog acquisition, DSP processing, and SENT frame timing-verified across −40°C to +160°C.
MLX90426GDC-ACB-630-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- SENT
- Output Signal:
- Programmable
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- ±1.2°
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Termination Style:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90426GDC-ACB-630-RE FAQ
1.How can I place an order for MLX90426GDC-ACB-630-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90426GDC-ACB-630-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 MLX90426GDC-ACB-630-RE reliable?
The price and inventory of MLX90426GDC-ACB-630-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90426GDC-ACB-630-RE is usually 5 days.
3.What payment methods are accepted for MLX90426GDC-ACB-630-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90426GDC-ACB-630-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90426GDC-ACB-630-RE?
MLX90426GDC-ACB-630-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90426GDC-ACB-630-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 MLX90426GDC-ACB-630-RE?
For technical support, including MLX90426GDC-ACB-630-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90426GDC-ACB-630-RE requirements.
6.How does Aetrix verify that MLX90426GDC-ACB-630-RE is sourced from the original manufacturer or authorized distributors?
All MLX90426GDC-ACB-630-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 MLX90426GDC-ACB-630-RE meets industry standards.
7.What is the process for return or replacement of MLX90426GDC-ACB-630-RE?
All MLX90426GDC-ACB-630-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90426GDC-ACB-630-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 MLX90426GDC-ACB-630-RE part is unused and in its original packaging.
Return procedure for MLX90426GDC-ACB-630-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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