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Melexis Technologies NV MLX90378GDC-ABJ-300-SP
- Part No.:
- MLX90378GDC-ABJ-300-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90378GDC-ABJ-300-SP.pdf
- Description:
- TRIAXIS POSITION PROCESSOR WITH
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MLX90378GDC-ABJ-300-SP from Melexis is a Triaxis® Hall-based 3D magnetic position processor IC for non-contacting absolute angle sensing in joysticks and shift levers. It delivers dual 12-bit PWM outputs or SENT (SAE J2716 APR2016) with H.1 frame encoding, operates from -40°C to +160°C, supports programmable 4-point linearization per axis, and meets ISO 26262 ASIL-C as a Safety Element out of Context.
For engineers reviewing the MLX90378GDC-ABJ-300-SP datasheet, pinout, applications, or equivalent options, this device is selected for high-reliability automotive transmission position sensing, industrial gimbal control, and safety-critical joystick interfaces requiring robust magnetic field immunity and dual-output redundancy.
Technical Context
The MLX90378GDC-ABJ-300-SP integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz components, a 12-bit ADC, DSP engine for real-time angular calculation, and dual output stages supporting simultaneous PWM or SENT protocols. Its architecture enables full 360° absolute angle decoding from a single moving magnet without mechanical contact.
It features on-chip programmable diagnostics including over/under temperature detection, field strength monitoring, and PWM/Sent error reporting, with configurable filter options (IIR/FIR), 48-bit ID storage, and NVRAM-based calibration persistence across power cycles - all within a SOIC-8 package rated for 160°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp | -40°C to +160°C: Enables direct mounting in high-heat automotive gearboxes and transmission housings without external thermal shielding. |
| Supply Voltage | 4.5–5.5 V (regulated) or 6–18 V (battery): Supports both 5V microcontroller domains and direct 12V vehicle battery interfacing with internal regulation. |
| Output Resolution | 12-bit PWM or SENT: Delivers 4096 distinct angle positions per channel, sufficient for precise throttle or steering actuator feedback. |
| Magnetic Sensitivity | Bx/By/Bz detection: Allows full 3D motion tracking using standard ferrite magnets - no custom magnet arrays required. |
| Output Protocols | Dual PWM or SENT (H.1 format): Provides flexibility for legacy PWM ECU integration or modern SENT-compliant diagnostic-capable systems. |
| Safety Certification | ISO 26262 ASIL-C SEooC: Validated safety mechanisms (watchdogs, diagnostics, memory BIST) reduce functional safety validation effort for OEMs. |
| Linearization | 4-point per-axis PWL: Enables accurate compensation of magnet nonlinearity and mechanical misalignment in production assemblies. |
Pinout & Package
MLX90378GDC-ABJ-300-SP uses the SOIC-8 RoHS-compliant package (JEDEC MS-012AC), with 1.27 mm pitch, 4.9 mm × 3.9 mm body, and exposed pad for thermal dissipation. Pin 7 (VDEC) requires 100 nF decoupling to ground; unused pins (Input, Test) must be connected to PCB ground for EMC compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – VDD | Power supply input | Primary 4.5–18 V supply rail; internal regulators derive analog/digital voltages - supports direct battery connection. |
| 2 – Input | External measurement gateway | Accepts analog voltage (–1.5 V to 5.0 V) for auxiliary sensor inputs (e.g., temperature, pressure) multiplexed into SENT frames. |
| 3 – OUT2 | Secondary digital output | Configurable as 12-bit PWM or SENT channel 2 - enables dual-angle reporting (e.g., X/Y axes) or redundancy. |
| 4 – Test | Factory test interface | Internally grounded; must be tied to PCB ground to prevent noise coupling and ensure EMC robustness. |
| 5 – OUT1 | Primary digital output | Configurable as 12-bit PWM or SENT channel 1 - carries primary angle data; supports fast SENT (1.5 µs tick) or standard mode. |
| 6 – VSS | Digital ground reference | Return path for digital logic and output drivers; separate from analog ground to minimize noise coupling. |
| 7 – VDEC | Analog decoupling node | Internal analog regulator output; requires 100 nF ceramic capacitor to ground for stable 3.3 V analog supply. |
| 8 – VSS | Analog ground reference | Isolated return for Hall sensors and ADC; must be star-connected to VDEC capacitor ground to preserve signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall front end | Simultaneous Bx, By, Bz sensing enables true 3D position decoding from a single magnet - eliminates need for multi-sensor assemblies. |
| Programmable 4-pt linearization | Per-axis piecewise-linear correction allows factory or end-user calibration to compensate for mechanical tolerances and magnet flux distortion. |
| Dual independent outputs | OUT1 and OUT2 operate independently - supports redundant angle reporting, X/Y decomposition, or hybrid PWM+SENT configurations. |
| SENT with slow-channel diagnostics | Embedded serial message channel transmits error codes, temperature, and user-defined values alongside primary angle data - no extra bus required. |
| ASIL-C safety mechanisms | Includes intelligent watchdog (20 ms timeout), memory BIST (32–64 ms), and diagnostic cycle timers - reduces external safety monitor requirements. |
Applications
| Automotive Shift Lever | Industrial Joystick |
|---|---|
Use Scenario: Detecting gear selection position in automatic transmissions under high-vibration, oil-immersed conditions. IC Role / Device Role / Timing Role: Absolute 360° angular encoder providing two independent PWM signals representing PRNDL state and detent accuracy. Use Value: Eliminates potentiometer wear and contact bounce; withstands 160°C ambient and >10M cycle life with no mechanical degradation. | Use Scenario: Precision XYZ motion control in hydraulic excavator operator interfaces exposed to dust, moisture, and wide temperature swings. IC Role / Device Role / Timing Role: Triaxis® magnetic processor converting magnet rotation/tilt into dual SENT channels for X/Y axis reporting with <1° total error. Use Value: Non-contact operation prevents ingress-related failure; programmable linearization compensates for mechanical play in gimbal linkages. |
| Transmission Position Sensor | Ball-and-Socket Control |
Use Scenario: Monitoring clutch engagement position and gear synchronizer status inside dual-clutch transmissions. IC Role / Device Role / Timing Role: High-temperature position processor delivering SENT frames with embedded diagnostics (field strength, temperature, CRC) at 1110 µs intervals. Use Value: ASIL-C compliance enables direct integration into safety-critical drivetrain control loops without additional hardware redundancy. | Use Scenario: Compact 3D pointing interface in medical robotic arms where size, reliability, and EMI immunity are critical. IC Role / Device Role / Timing Role: Single-die SOIC-8 IC measuring tilt and rotation via integrated Triaxis® Hall elements - outputs synchronized dual PWM for X/Z axes. Use Value: PCB-less alternative not applicable; SOIC-8 footprint allows dense placement near actuator shafts while maintaining 12-bit resolution and <50 µs latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar magnetic position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90377GDC-ABG-300-SP | Single-output variant (OUT1 only); no INPUT pin; identical SOIC-8 package and ASIL-C certification. | Lacks auxiliary measurement capability and dual-output redundancy - suitable only for cost-sensitive single-axis use cases. | Select when system requires only one angle channel and no external analog input integration. |
| AMS AS5055A-BQFT | 14-bit SPI/I²C output; no SENT/PWM; 125°C max operating temperature; different magnetic architecture (planar Hall). | Requires external MCU for protocol translation and lacks built-in diagnostics - increases software validation burden. | Choose for non-automotive industrial applications needing higher resolution but accepting lower temp rating and no native SENT support. |
Compared with MLX90378GDC-ABJ-300-SP, the MLX90377 offers reduced feature set at lower cost for single-output needs, while the AS5055A provides higher resolution but sacrifices automotive-grade temperature range, integrated diagnostics, and native SENT compatibility required for ASIL-C systems.
Availability
MLX90378GDC-ABJ-300-SP is available at Aetrix Electronics and suitable for automotive transmission position sensing, industrial joystick control, and safety-critical shift lever applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MLX90378GDC-ABJ-300-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 Asia and ISO/TS 16949-certified manufacturing.
The MLX90378 belongs to Melexis' Triaxis® position processor product line, engineered specifically for robust, non-contacting 3D angular measurement in harsh automotive and industrial environments where reliability and functional safety are mandatory.
FAQ
What is the maximum operating temperature for the MLX90378GDC-ABJ-300-SP?
The MLX90378GDC-ABJ-300-SP is rated for continuous operation from –40°C to +160°C ambient temperature, with a maximum junction temperature of +175°C. This specification is validated per its SOIC-8 package thermal performance data and enables direct mounting in high-heat locations such as automatic transmission valve bodies or engine bay controls without external heatsinking.
Does the MLX90378GDC-ABJ-300-SP support both PWM and SENT outputs simultaneously?
No - the MLX90378GDC-ABJ-300-SP supports either dual PWM outputs or a single SENT output with two encoded channels (e.g., angle + diagnostics), but not both protocols concurrently. Output mode is configured via the PROTOCOL parameter in NVRAM during programming; switching requires reconfiguration and power cycle.
How is the INPUT pin used in the MLX90378GDC-ABJ-300-SP?
The INPUT pin on the MLX90378GDC-ABJ-300-SP accepts analog voltages from –1.5 V to +5.0 V and multiplexes that measurement into SENT frames as a "slow channel" value. It enables integration of auxiliary sensors (e.g., temperature, pressure) without adding external ADCs or communication buses - all data transmitted via the same SENT line.
What safety documentation accompanies the MLX90378GDC-ABJ-300-SP?
The MLX90378GDC-ABJ-300-SP ships with a dedicated Functional Safety Manual (FSM) compliant with ISO 26262, detailing diagnostic coverage metrics, failure modes, safety mechanisms (e.g., IWD, AWD, NVRAM BIST), and integration guidelines. This documentation supports ASIL-C claim substantiation for automotive system-level FMEDA and safety case development.
Can the MLX90378GDC-ABJ-300-SP be calibrated after soldering onto the PCB?
Yes - the MLX90378GDC-ABJ-300-SP supports post-soldering calibration via its SENT or PWM interface using Melexis' PTC (Programmer Tool Chain) software. Key parameters including 4-point linearization coefficients, gain settings, and zero-point offset can be written to NVRAM, enabling end-of-line compensation for mechanical tolerances and magnet alignment variations.
MLX90378GDC-ABJ-300-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:
- PWM, SENT
- Output Signal:
- Programmable
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- ±2.5°
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 160°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90378GDC-ABJ-300-SP FAQ
1.How can I place an order for MLX90378GDC-ABJ-300-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90378GDC-ABJ-300-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 MLX90378GDC-ABJ-300-SP reliable?
The price and inventory of MLX90378GDC-ABJ-300-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90378GDC-ABJ-300-SP is usually 5 days.
3.What payment methods are accepted for MLX90378GDC-ABJ-300-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90378GDC-ABJ-300-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90378GDC-ABJ-300-SP?
MLX90378GDC-ABJ-300-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90378GDC-ABJ-300-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 MLX90378GDC-ABJ-300-SP?
For technical support, including MLX90378GDC-ABJ-300-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90378GDC-ABJ-300-SP requirements.
6.How does Aetrix verify that MLX90378GDC-ABJ-300-SP is sourced from the original manufacturer or authorized distributors?
All MLX90378GDC-ABJ-300-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 MLX90378GDC-ABJ-300-SP meets industry standards.
7.What is the process for return or replacement of MLX90378GDC-ABJ-300-SP?
All MLX90378GDC-ABJ-300-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90378GDC-ABJ-300-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 MLX90378GDC-ABJ-300-SP part is unused and in its original packaging.
Return procedure for MLX90378GDC-ABJ-300-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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