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Melexis Technologies NV MLX90380LDC-BAB-403-SP
- Part No.:
- MLX90380LDC-BAB-403-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-403-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,391
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Product details
Overview
MLX90380LDC-BAB-403-SP from Melexis is a monolithic Triaxis® resolver IC delivering true 360° contactless angular position sensing via ratiometric sine/cosine analog outputs. It operates from 3.3V or 5V supply, supports -40°C to 150°C ambient, features 4 µs output refresh rate, and is factory-programmed for NdFeB magnet compatibility, X/Y magnetic axis, and 40 mT full-scale magnetic range - enabling high-accuracy rotor position feedback in BLDC motor control systems.
For engineers reviewing the MLX90380LDC-BAB-403-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SOIC-8 package details, magnetic axis configuration, real-world use cases in field-oriented control, and validated alternative options for automotive and industrial motor drive designs.
Technical Context
The MLX90380LDC-BAB-403-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Y) magnetic field components using integrated vertical and planar Hall elements. Its dual analog outputs deliver synchronized sine/cosine waveforms with 1.6 samples/degree at 25,000 rpm under high-bandwidth programming.
This variant is preconfigured for X/Y magnetic axis operation (COS on OUT1, SIN on OUT2), 40 mT full-scale range, and NdFeB magnet optimization. It supports ratiometric output scaling, programmable filter bandwidth via external pins, and end-of-shaft mechanical integration - all within a single-die SOIC-8 package rated for automotive-grade thermal and EMC robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Ratiometric analog sine/cosine outputs referenced to VDD; enables direct ADC interfacing without external reference voltage. |
| Refresh Rate | 4 µs per field component (8 µs total for both outputs); supports real-time position tracking up to 25,000 rpm with ≤74 µs tracking delay in high-bandwidth mode. |
| Supply Voltage | 3.135–3.6 V or 4.5–5.5 V; dual-supply capability allows flexible MCU interface without level-shifting in 3.3V or 5V systems. |
| Operating Temp | -40°C to +150°C; qualified for under-hood automotive and industrial motor drive environments without derating. |
| Magnetic Range | 40 mT full-scale (factory-programmed BAB-403 option); matches typical NdFeB magnet flux density at air gap in end-of-shaft configurations. |
| Angular Accuracy | ±1° total error with dynamic compensation; linearity error < ±0.5% over 360° when combined with MCU-based offset/gain correction. |
| Package | SOIC-8; surface-mount footprint compatible with standard reflow profiles and automotive board assembly requirements. |
Pinout & Package
MLX90380LDC-BAB-403-SP uses the SOIC-8 package (JEDEC MS-012AC), with exposed pad optional for thermal enhancement. Pin assignments are fixed per datasheet revision 11 and validated for X/Y axis operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VSS | Supply Ground | Primary ground reference for analog and digital circuitry; must be low-impedance connection to system GND plane. |
| 2 NC | Not Connected | No internal connection; recommended to tie to GND for EMC integrity and noise immunity. |
| 3 TEST | Test Pin | Factory test access; tie to GND in production for optimal EMC performance and noise suppression. |
| 4 NC | Not Connected | No internal connection; recommended to tie to GND for EMC integrity and noise immunity. |
| 5 OUT2 | Analog Output SIN | Sine waveform output (ratiometric %VDD); used with OUT1 for arctan(OUT2/OUT1) angle calculation. |
| 6 VDD5V | 5V Supply Input | Active 5V supply rail; leave VDD3V3 floating when using this supply; supports higher SNR at elevated temperatures. |
| 7 VDD3V3 | 3.3V Supply Input | Active 3.3V supply rail; leave VDD5V floating when using this supply; reduces power consumption in low-voltage systems. |
| 8 OUT1 | Analog Output COS | Cosine waveform output (ratiometric %VDD); paired with OUT2 to resolve absolute angular position over full 360°. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal X/Y field measurement eliminates need for external flux concentrators or multi-sensor assemblies in end-of-shaft layouts. |
| Selectable Magnetic Axis | X/Y configuration (BAB-403) enables direct compatibility with two-pole radial magnets mounted at shaft end - no mechanical reorientation required. |
| Ratiometric Outputs | Output swing scales linearly with VDD (e.g., 50% VDD at zero field); removes dependency on stable external reference voltage for ADC conversion. |
| Programmable Bandwidth | Filter time constant adjustable via external pins to match motor speed dynamics - critical for minimizing latency in FOC loops. |
| High-Temp Operation | Guaranteed functionality at 150°C junction temperature supports placement near motor windings or inverters without heatsinking. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
|
Use Scenario: Real-time rotor position feedback for six-step commutation and sinusoidal current control in 48V e-bike hub motors. IC Role / Device Role / Timing Role: Resolver IC providing synchronized sine/cosine analog outputs to MCU ADC inputs for continuous 360° angle reconstruction. Use Value: Enables torque ripple reduction below 3% and efficiency gains >2.5% versus Hall-effect-only solutions due to sub-degree angular resolution. |
Use Scenario: Rotor position sensing in HVAC compressor PMSMs operating at 3,000–12,000 rpm with field-weakening requirements. IC Role / Device Role / Timing Role: Contactless angular sensor delivering 4 µs update rate to support fast inner-loop current control at 20 kHz PWM frequency. Use Value: Maintains ±1.2° accuracy across -40°C to 125°C ambient, eliminating thermal recalibration routines in variable-speed drives. |
| Electric Power Steering (EPS) | Industrial Servo Drives |
|
Use Scenario: Primary angle sensor in dual-redundant EPS systems requiring ASIL-B compliance and fail-operational behavior. IC Role / Device Role / Timing Role: High-integrity resolver IC with ratiometric outputs and built-in diagnostics for comparison against secondary sensor path. Use Value: Supports ISO 26262 diagnostic coverage >90% for angular position faults via programmable sensitivity monitoring and offset drift detection. |
Use Scenario: Position feedback in CNC machine spindle drives requiring 0.05° repeatability and 10,000-hour MTBF. IC Role / Device Role / Timing Role: Absolute rotary position sensor interfaced to FPGA-based motion controller via dual-channel 16-bit ADC. Use Value: Delivers <0.1° linearity error after gain/offset correction, meeting SEMI F47 voltage sag immunity and IEC 61800-3 EMC requirements. |
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-400-SP | Same SOIC-8 package and X/Y axis, but programmed for NdFeB magnet with 50 mT full-scale range instead of 40 mT. | Better suited for larger air gaps or lower-strength NdFeB magnets where peak flux density exceeds 40 mT. | Select when magnet geometry yields >40 mT at sensor location; requires recalibration of MCU gain scaling factor. |
| MLX90380LGO-BAB-403-SP | TSSOP-16 dual-die fully redundant package; identical magnetic programming (NdFeB, X/Y, 40 mT) but with duplicated signal paths. | Required for ASIL-D or SIL-3 functional safety architectures needing hardware redundancy and cross-check capability. | Choose only when system-level safety certification mandates dual-channel fault detection; adds PCB area and cost. |
Compared with MLX90380LDC-BAB-403-SP, the -400 variant offers extended magnetic range for marginal flux conditions, while the TSSOP-16 -BAB-403 provides hardware redundancy at the expense of footprint and BOM complexity - neither is pin-compatible nor drop-in replaceable.
Availability
MLX90380LDC-BAB-403-SP is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, industrial servo drives, and HVAC compressor applications requiring stable component supply across automotive and industrial lifecycles.
Supply support for MLX90380LDC-BAB-403-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 intelligent sensor solutions for automotive and industrial markets, with core expertise in magnetic sensing, infrared thermometry, and automotive ASICs.
The MLX90380 product line delivers Triaxis® resolver ICs optimized for high-accuracy, contactless angular position sensing in demanding motor control and steering systems - designed specifically for end-of-shaft and through-shaft mechanical integration.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-403-SP?
The MLX90380LDC-BAB-403-SP is factory-programmed for X/Y magnetic axis operation, meaning OUT1 carries the cosine component of the X-axis field and OUT2 carries the sine component of the Y-axis field. This configuration is optimized for two-pole radial magnets in end-of-shaft mounting, with equal sensitivity on both axes and no internal gain mismatch correction applied.
Does MLX90380LDC-BAB-403-SP support both 3.3V and 5V supply voltages simultaneously?
No - MLX90380LDC-BAB-403-SP must be powered from either VDD3V3 or VDD5V, not both. When using 3.3V, VDD5V must be left floating; when using 5V, VDD3V3 must be left floating. The device automatically detects active supply and configures internal biasing accordingly, with specified performance across both rails.
What is the full-scale magnetic range of MLX90380LDC-BAB-403-SP and how is it determined?
The MLX90380LDC-BAB-403-SP has a factory-programmed full-scale magnetic range of 40 mT, corresponding to the BAB-403 option code. This value defines the in-plane (X or Y) flux density that produces a ±40% VDD output swing with 50% VDD quiescent offset at 25°C - calibrated for NdFeB magnets in standard end-of-shaft geometries.
Can MLX90380LDC-BAB-403-SP be used in through-shaft configurations?
No - the X/Y magnetic axis configuration of MLX90380LDC-BAB-403-SP is intended for end-of-shaft applications with two-pole radial magnets. Through-shaft operation requires Z/Y or X/Z axis variants (e.g., BAB-423 or BAB-413) that sense axial field components; using MLX90380LDC-BAB-403-SP in through-shaft setups results in insufficient signal amplitude and degraded linearity.
What is the maximum rotational speed supported by MLX90380LDC-BAB-403-SP?
The MLX90380LDC-BAB-403-SP supports up to 25,000 rpm with high-bandwidth programming, delivering 1.6 samples per degree of rotation. At this speed, total tracking delay is 74 µs, and phase shift remains below 1.8° - verified under full-scale magnetic stimulus and nominal supply conditions per datasheet revision 11.
MLX90380LDC-BAB-403-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:
- 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:
- 1.135V ~ 3.6V
- Mounting Type:
- Surface Mount
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90380LDC-BAB-403-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-403-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-403-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 MLX90380LDC-BAB-403-SP reliable?
The price and inventory of MLX90380LDC-BAB-403-SP 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-403-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-403-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-403-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-403-SP?
MLX90380LDC-BAB-403-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-403-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 MLX90380LDC-BAB-403-SP?
For technical support, including MLX90380LDC-BAB-403-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-403-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-403-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-403-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 MLX90380LDC-BAB-403-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-403-SP?
All MLX90380LDC-BAB-403-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-403-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 MLX90380LDC-BAB-403-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-403-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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