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Melexis Technologies NV MLX90380LDC-BAB-120-SP
- Part No.:
- MLX90380LDC-BAB-120-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-120-SP.pdf
- Description:
- SENSOR ROTARY 360DEG SMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,364
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Product details
Overview
MLX90380LDC-BAB-120-SP from Melexis is a monolithic Triaxis® contactless rotary position sensor IC delivering true 360° sine/cosine analog outputs for absolute angular measurement. 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 with 70 mT full-scale magnetic range and X/Z magnetic axis configuration.
For engineers reviewing the MLX90380LDC-BAB-120-SP datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 package details, magnetic axis–specific pin functions, real-world motor control use cases, and two validated alternative parts with documented functional trade-offs.
Technical Context
The MLX90380LDC-BAB-120-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components using integrated vertical and planar Hall elements. Its dual analog outputs (OUT1 = COS, OUT2 = SIN) are ratiometric to VDD and deliver high-fidelity angular signals with ≤1° total angular error after dynamic compensation.
This variant is preprogrammed for X/Z magnetic axis operation with NdFeB magnet optimization, 70 mT full-scale range, and high-bandwidth mode (4 µs update period). Sensitivity is fixed at 0.57 %VDD/mT for X-axis and 0.285 %VDD/mT for Z-axis due to programmed sensitivity mismatch per datasheet Table 2 and Section 8.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle tracking up to 25,000 RPM in high-bandwidth mode. |
| Full-Scale Magnetic Range | 70 mT - Optimized for strong NdFeB magnets; supports end-of-shaft and through-shaft configurations. |
| Operating Voltage | 3.3 V or 5 V - Dual-supply flexibility; VDD3V3 and VDD5V pins must be used separately per application diagram. |
| Temperature Range | -40°C to +150°C - Qualified for under-hood automotive and industrial motor control environments. |
| Magnetic Axis | X/Z - OUT1 reports BX, OUT2 reports BZ; Z-axis sensitivity is half of X-axis (mismatched mode). |
| Output Type | Ratiometric Sine/Cosine - Output swing scales with VDD; enables robust ADC interfacing without external references. |
| Total Angular Error | ±1° with dynamic compensation - Achievable via off-chip arctan(OUT2/OUT1) with offset/gain correction. |
Pinout & Package
MLX90380LDC-BAB-120-SP is housed in an SOIC-8 package (JEDEC MS-012AC, 3.9 mm × 4.9 mm × 1.75 mm body height), RoHS-compliant, with exposed pad not electrically connected. Pin 1 is marked by a dot or notch; pins 2 and 4 are NC and must be tied to GND for optimal EMC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VSS | Supply Ground | Primary ground reference for internal circuitry and output stage; must connect to low-impedance system GND. |
| 2 NC | Not Connected | No internal connection; tie to GND per datasheet for EMC compliance. |
| 3 TEST | Test Pin | Factory test access; tie to GND for normal operation and improved noise immunity. |
| 4 NC | Not Connected | No internal connection; tie to GND per datasheet for EMC compliance. |
| 5 OUT2 | Analog Output SIN | Delivers sine component of measured angle relative to X/Z axis; ratiometric to active VDD rail. |
| 6 VDD5V | 5 V Supply Input | Power input when operating at 5 V; VDD3V3 must remain floating in this mode. |
| 7 VDD3V3 | 3.3 V Supply Input | Power input when operating at 3.3 V; VDD5V must remain floating in this mode. |
| 8 OUT1 | Analog Output COS | Delivers cosine component of measured angle relative to X/Z axis; ratiometric to active VDD rail. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Architecture | Simultaneous orthogonal (X/Z) field sensing eliminates need for external flux concentrators or multi-die assemblies. |
| Programmable Magnetic Axis | X/Z configuration enables accurate angle measurement in through-shaft applications where magnet is mounted off-axis. |
| High-Speed Analog Outputs | 4 µs update period supports closed-loop FOC in high-RPM BLDC and PMSM motors without interpolation latency. |
| Ratiometric Output Scaling | Output voltage range (5–95% VDD) tracks supply variation, simplifying ADC interface and improving system-level accuracy. |
| NdFeB Magnet Optimization | BAB-120 option code configures internal gain and temperature compensation specifically for neodymium-iron-boron magnets. |
| 70 mT Full-Scale Range | Maximizes signal-to-noise ratio for high-strength magnets while maintaining linearity within ±0.5% over temperature. |
Applications
| Brushless Motor Rotor Position | PMSM Field-Oriented Control |
|---|---|
Use Scenario: Real-time rotor angle feedback in 3-phase inverter-driven motors for EV traction and industrial drives. IC Role / Device Role / Timing Role: Absolute angular position sensor providing synchronized sine/cosine outputs to MCU ADC for arctan-based angle computation. Use Value: Enables precise commutation timing and torque ripple reduction at up to 25,000 RPM with <±1° dynamic angular error. |
Use Scenario: High-bandwidth current vector alignment in permanent magnet synchronous motors requiring sub-degree angle resolution. IC Role / Device Role / Timing Role: Primary resolver replacement delivering true 360° continuous angle with no ambiguity or zero-crossing dead zones. Use Value: Supports fast d-q axis transformation with minimal phase lag (<12 µs tracking delay in high-bandwidth mode), critical for torque loop stability. |
| End-of-Shaft Rotary Encoder | Steering Angle Sensor |
Use Scenario: Compact non-contact position sensing on rotating shafts in robotics joints and servo actuators. IC Role / Device Role / Timing Role: Contactless angular transducer replacing optical encoders; outputs analog sine/cosine directly compatible with standard resolver-to-digital converters. Use Value: Eliminates wear, contamination sensitivity, and optical alignment issues while maintaining ±0.5° linearity over full mechanical rotation. |
Use Scenario: Redundant steering angle measurement in ASIL-B automotive systems requiring fail-operational capability. IC Role / Device Role / Timing Role: Primary or secondary angular sensor in column-mounted or rack-mounted steering assemblies with X/Z axis optimized for off-axis magnet placement. Use Value: Delivers AEC-Q100 qualified performance across -40°C to +150°C, supporting ISO 26262 functional safety requirements via external diagnostics. |
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-BAA-100-SP | SmCo magnet optimization, 40 mT full-scale range, X/Y axis, low-bandwidth mode (29.5 µs tracking delay). | Better suited for low-RPM, high-accuracy end-of-shaft applications with samarium-cobalt magnets; lower noise floor but reduced dynamic range. | Select when magnet type and mechanical layout require X/Y axis symmetry and thermal stability of SmCo magnets is prioritized over speed. |
| MLX90380LGO-BAB-100-SP | TSSOP-16 dual-die redundant architecture, identical BAB-100 programming (NdFeB, X/Z, 70 mT), higher ESD tolerance (1.5 kV CDM). | Required for ASIL-D or SIL-3 safety-critical systems needing hardware redundancy; occupies larger PCB area and requires dual power routing. | Choose for automotive EPS or industrial safety drives where fault-tolerant angle reporting is mandated, accepting increased board space and complexity. |
Compared with MLX90380LDC-BAB-120-SP, the BAA-100 offers superior static accuracy with SmCo but sacrifices speed and dynamic range, while the LGO-BAB-100 adds hardware redundancy at the cost of footprint and layout overhead-neither is pin-compatible, but both share identical signal processing flow and calibration methodology.
Availability
MLX90380LDC-BAB-120-SP is available at Aetrix Electronics and suitable for brushless motor control, PMSM field-oriented control, and steering angle sensing requiring stable component supply across automotive production ramps and industrial OEM programs.
Supply support for MLX90380LDC-BAB-120-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 sensors and driver ICs for automotive and industrial markets, with core expertise in magnetic sensing, thermal imaging, and RF communication.
The MLX90380 product line delivers Triaxis® contactless angular position sensing for demanding motor control and safety-critical applications, designed to replace legacy resolvers and optical encoders with monolithic, programmable, and AEC-Q100-qualified solutions.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-120-SP?
The MLX90380LDC-BAB-120-SP is factory-programmed for X/Z magnetic axis operation, meaning OUT1 responds to the X-component (BX) and OUT2 to the Z-component (BZ) of the applied magnetic field. This configuration supports through-shaft mounting with off-axis magnets and exhibits intentional sensitivity mismatch (Z-axis sensitivity is half that of X-axis), as defined in option code BAB-120 per datasheet Table 2.
Does MLX90380LDC-BAB-120-SP support both 3.3V and 5V supply simultaneously?
No, MLX90380LDC-BAB-120-SP does not support simultaneous 3.3V and 5V operation. It uses either VDD3V3 or VDD5V exclusively-whichever rail is powered must be active while the other is left floating. The datasheet explicitly states that connecting both supplies violates recommended application diagrams and may cause undefined behavior or damage.
What is the full-scale magnetic range and sensitivity of MLX90380LDC-BAB-120-SP?
MLX90380LDC-BAB-120-SP has a full-scale magnetic range of 70 mT and is optimized for NdFeB magnets. Its sensitivity is 0.57 %VDD/mT for the X-axis and 0.285 %VDD/mT for the Z-axis (due to programmed mismatch), yielding ±40% VDD output swing at full scale per datasheet Section 12 and Table 2.
Can MLX90380LDC-BAB-120-SP be used in safety-critical automotive applications?
Yes, MLX90380LDC-BAB-120-SP is AEC-Q100 qualified (Grade 0, -40°C to +150°C) and supports functional safety architectures. While it is a single-die SOIC-8 device, its diagnostic capabilities-including ratiometric outputs, known-good-on-power-up behavior, and programmable bandwidth-enable integration into ASIL-B systems. For ASIL-D, Melexis recommends the dual-die TSSOP-16 variant (e.g., MLX90380LGO-BAB-100-SP).
How is the 4 µs output refresh rate achieved in MLX90380LDC-BAB-120-SP?
The 4 µs output refresh rate in MLX90380LDC-BAB-120-SP is achieved in high-bandwidth programming mode, where each field component (X and Z) is sampled sequentially in 2 µs. This timing is fixed by internal chopping and sample-and-hold circuitry and is independent of external clocking-no external oscillator or configuration is required to attain this update rate.
MLX90380LDC-BAB-120-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Triaxis®
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- Linear, Rotary Position
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- 0° ~ 360°, Continuous
- Linear Range:
- -
- Output:
- -
- Output Signal:
- -
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 3.135V ~ 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-120-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-120-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-120-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-120-SP reliable?
The price and inventory of MLX90380LDC-BAB-120-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-120-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-120-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-120-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-120-SP?
MLX90380LDC-BAB-120-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-120-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-120-SP?
For technical support, including MLX90380LDC-BAB-120-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-120-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-120-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-120-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-120-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-120-SP?
All MLX90380LDC-BAB-120-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-120-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-120-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-120-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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