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Melexis Technologies NV MLX90380LDC-BAB-125-RE
- Part No.:
- MLX90380LDC-BAB-125-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-125-RE.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
MLX90380LDC-BAB-125-RE from Melexis is a monolithic Triaxis® resolver IC delivering true 360° contactless angular position sensing via dual ratiometric sine/cosine analog outputs, with 4 µs output refresh rate, -40°C to 150°C operating temperature, and factory-programmed NdFeB magnet sensitivity (60 mT full-scale range) and X/Z magnetic axis configuration for through-shaft motor applications.
For engineers reviewing the MLX90380LDC-BAB-125-RE datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SOIC-8 package details, real-world motor control use cases, and validated alternative options for absolute rotary position sensing in high-temperature automotive and industrial BLDC/PMSM systems.
Technical Context
The MLX90380LDC-BAB-125-RE implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components using integrated vertical and planar Hall elements, enabling precise angle computation from rotating permanent magnets without physical contact. Its dual analog outputs deliver ratiometric sine and cosine signals referenced to VDD, supporting direct ADC interfacing.
Programmable bandwidth (high BW mode), selectable 3.3 V or 5 V supply operation, and factory-configured NdFeB magnet compatibility (BAB prefix) with 60 mT full-scale range and X/Z axis orientation define its system-level behavior. The device supports end-of-shaft and through-shaft configurations via magnetic axis selection and includes on-chip EEPROM for calibration data storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle tracking up to 25,000 rpm with <74 µs total tracking delay in high-bandwidth mode. |
| Operating Temperature | -40°C to 150°C - Qualified for under-hood automotive and industrial motor control environments. |
| Supply Voltage | 3.135–3.6 V or 4.5–5.5 V - Dual-rail support allows flexible MCU interface without level-shifting. |
| Full-Scale Magnetic Range | 60 mT - Factory-programmed (BAB-125) for NdFeB magnets; enables robust signal swing with low-noise resolution. |
| Magnetic Axis | X/Z - Supports through-shaft mounting with COS on X-axis and SIN on Z-axis per functional diagram. |
| Output Type | Ratiometric sine/cosine analog - Output voltages scale linearly with VDD (5–95% VDD range), simplifying ADC reference design. |
| Total Angular Error | ±1° with dynamic compensation - Achievable via external ECU offset/gain correction applied before arctan(OUT2/OUT1). |
Pinout & Package
MLX90380LDC-BAB-125-RE uses the RoHS-compliant SOIC-8 package (5.3 mm × 6.2 mm, 1.27 mm pitch), optimized for surface-mount assembly in compact motor control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VSS | Supply Ground | Primary ground reference for analog and digital circuitry; must be low-impedance connection. |
| 2 - NC | Not Connected | No internal connection; recommended to tie to ground for EMC performance. |
| 3 - TEST | Test Pin | Factory test access; tie to ground for optimal EMC in production designs. |
| 4 - NC | Not Connected | No internal connection; recommended to tie to ground for EMC performance. |
| 5 - OUT2 | Analog Output SIN | Sine output referenced to VDD; delivers ratiometric voltage proportional to Bz component in X/Z mode. |
| 6 - VDD5V | 5 V Supply Input | Active 5 V rail; when used, VDD3V3 must remain floating per application diagrams. |
| 7 - VDD3V3 | 3.3 V Supply Input | Active 3.3 V rail; when used, VDD5V must remain floating per application diagrams. |
| 8 - OUT1 | Analog Output COS | Cosine output referenced to VDD; delivers ratiometric voltage proportional to Bx component in X/Z mode. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing Architecture | Simultaneous orthogonal (X/Z) field measurement eliminates need for external flux concentrators or multi-die assemblies. |
| Programmable Bandwidth | High-bandwidth mode enables 1.6 samples/degree at 25,000 rpm - critical for field-oriented control loop timing. |
| Ratiometric Analog Outputs | Eliminates dependency on stable voltage references; SIN/COS outputs scale directly with VDD, reducing ADC design complexity. |
| Factory-Configured Magnetic Axis & Sensitivity | BAB-125 variant fixes X/Z axis and 60 mT range for NdFeB magnets - removes field calibration during production. |
| On-Chip EEPROM Programming | Enables post-assembly parameter tuning (e.g., offset, gain) via connector pins - no external programmer required. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
Use Scenario: High-speed rotor position feedback in e-bike hub motors and HVAC blower fans. IC Role / Device Role / Timing Role: Absolute 360° angular resolver providing real-time sine/cosine signals for commutation timing and torque vectoring. Use Value: 4 µs update rate and ±1° compensated accuracy enable smooth low-noise operation at >15,000 rpm without sensor lag. |
Use Scenario: Rotor position sensing in traction inverters for electric power steering and industrial servo drives. IC Role / Device Role / Timing Role: Contactless resolver replacing resolvers and encoders in space-constrained PMSM stator assemblies. Use Value: X/Z axis configuration supports through-shaft mounting with minimal mechanical redesign; -40°C to 150°C rating ensures reliability across thermal cycles. |
| Field-Oriented Motor Control | Electric Power Steering |
Use Scenario: Precise d-q axis alignment in closed-loop FOC algorithms for industrial pumps and compressors. IC Role / Device Role / Timing Role: High-fidelity angle source feeding arctan(OUT2/OUT1) computation in MCU-based motor controllers. Use Value: Ratiometric outputs and programmable bandwidth allow direct ADC sampling without gain staging, reducing BOM count and latency. |
Use Scenario: Compact, high-reliability rotor position feedback in column-assist EPS modules exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary angular sensor interfacing with ASIL-B compliant motor control ECUs. Use Value: AEC-Q100 qualified SOIC-8 package and 150°C junction rating meet automotive under-hood thermal requirements without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute rotary position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90380LDC-BAB-100-RE | Same SOIC-8 package and X/Z axis, but 40 mT full-scale range for SmCo magnets. | Lower magnetic sensitivity suits higher-coercivity SmCo magnets; requires different magnet geometry or air gap. | Select when using SmCo magnets and tighter magnetic coupling is available. |
| MLX90380LGO-BAB-125-RE | TSSOP-16 dual-die redundant architecture; identical BAB-125 programming (NdFeB, 60 mT, X/Z). | Provides functional safety compliance (ASIL-D ready) via hardware redundancy; larger footprint and higher cost. | Select when ISO 26262 ASIL-D fault tolerance is required for safety-critical steering or braking actuators. |
Compared with MLX90380LDC-BAB-125-RE, the BAB-100 variant trades magnetic range for SmCo compatibility, while the LGO-BAB-125-RE adds hardware redundancy at the cost of board area and complexity - both retain identical angular accuracy and bandwidth but serve distinct magnet and safety requirements.
Availability
MLX90380LDC-BAB-125-RE is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and field-oriented control applications requiring stable component supply across automotive production ramps and industrial OEM programs.
Supply support for MLX90380LDC-BAB-125-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 motion control, with core expertise in Hall-effect, IR, and pressure sensing technologies.
The MLX90380 product line delivers contactless absolute angular position sensing using Triaxis® Hall technology, designed specifically for high-temperature, high-reliability motor commutation and torque control in automotive electrification and industrial automation.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-125-RE?
The MLX90380LDC-BAB-125-RE is factory-programmed for X/Z magnetic axis operation, meaning OUT1 (COS) responds to the Bx field component and OUT2 (SIN) responds to the Bz field component. This configuration supports through-shaft mounting where the magnet is positioned off-axis relative to the IC surface, as confirmed in Table 2 and Figure 7 of the datasheet.
Which magnet type is MLX90380LDC-BAB-125-RE optimized for?
MLX90380LDC-BAB-125-RE is optimized for NdFeB (Neodymium Iron Boron) permanent magnets, as indicated by the "BAB" option code prefix. Its 60 mT full-scale magnetic range (suffix "125") is calibrated for typical NdFeB flux densities, ensuring optimal signal-to-noise ratio and linearity across the -40°C to 150°C operating range.
Can MLX90380LDC-BAB-125-RE operate from both 3.3 V and 5 V supplies?
Yes, MLX90380LDC-BAB-125-RE supports dual-supply operation: it accepts either 3.135–3.6 V on VDD3V3 or 4.5–5.5 V on VDD5V, but not both simultaneously. When using 5 V, VDD3V3 must be left floating; when using 3.3 V, VDD5V must be left floating - per Section 13.1 of the datasheet and Pin Definition Table 4.
What is the output update period and tracking delay of MLX90380LDC-BAB-125-RE?
The MLX90380LDC-BAB-125-RE has a fixed 4 µs output update period (TS), with each field component sampled sequentially. In high-bandwidth mode (enabled by BAB-125's "125" suffix), the total tracking delay is 74 µs - defined as the time between magnetic stimulus rotation and corresponding SIN/COS output change, including internal sample-and-hold filtering.
Does MLX90380LDC-BAB-125-RE require external programming hardware?
No, MLX90380LDC-BAB-125-RE supports programming through the connector using only the four application pins (VDD3V3, VDD5V, OUT1, OUT2) - no dedicated programmer or debug interface is needed. Factory programming sets the X/Z axis, 60 mT range, and NdFeB magnet type; field calibration (e.g., offset correction) can be performed via these same pins per Section 3 and Application Diagrams.
MLX90380LDC-BAB-125-RE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Triaxis®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- Rotary Position
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- 0° ~ 360°
- Linear Range:
- -
- Output:
- Analog Voltage
- Output Signal:
- Cosine, Sine
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- ±1.5%
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90380LDC-BAB-125-RE FAQ
1.How can I place an order for MLX90380LDC-BAB-125-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-125-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 MLX90380LDC-BAB-125-RE reliable?
The price and inventory of MLX90380LDC-BAB-125-RE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90380LDC-BAB-125-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-125-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-125-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-125-RE?
MLX90380LDC-BAB-125-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-125-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 MLX90380LDC-BAB-125-RE?
For technical support, including MLX90380LDC-BAB-125-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-125-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-125-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-125-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 MLX90380LDC-BAB-125-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-125-RE?
All MLX90380LDC-BAB-125-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-125-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 MLX90380LDC-BAB-125-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-125-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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