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Melexis Technologies NV MLX90380LDC-BAB-543-SP
- Part No.:
- MLX90380LDC-BAB-543-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-543-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,796
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Product details
Overview
MLX90380LDC-BAB-543-SP from Melexis is a monolithic Triaxis® contactless rotary position sensor IC delivering true 360° sine/cosine analog outputs with 4 µs output refresh rate, ±40%VDD swing, and operation from -40°C to 150°C. It uses NdFeB magnets, supports X/Z magnetic axis with sensitivity mismatch, and targets end-of-shaft and through-shaft motor position sensing in automotive EPS and industrial servo drives.
For engineers reviewing the MLX90380LDC-BAB-543-SP datasheet, pinout, applications, or equivalent options, this page delivers verified SOIC-8 pin definitions, magnetic axis configuration (X/Z, mismatched), 30 mT full-scale range, 5 V supply mode, and high-bandwidth programming - all confirmed for the exact BAB-543 variant.
Technical Context
The MLX90380LDC-BAB-543-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 programmable via external pins for bandwidth and sensitivity calibration.
This variant is factory-programmed for NdFeB magnet compatibility, X/Z magnetic axis with intentional sensitivity mismatch (Bz ≈ 2×Bx), 30 mT full-scale range, 5 V operating supply, and high-bandwidth mode (tracking delay = 12 µs, Nyquist frequency = 125 kHz), enabling accurate angular reconstruction up to 25,000 rpm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle computation at >200 kSPS for high-dynamic motor control loops. |
| Full-Scale Magnetic Range | 30 mT - Optimized for NdFeB magnets in compact end-of-shaft configurations with 5 V supply. |
| Magnetic Axis Configuration | X/Z with sensitivity mismatch - Bz output scaled to ~2×Bx, supporting off-axis through-shaft applications per datasheet Figure 7. |
| Supply Voltage | 4.5–5.5 V - Requires VDD5V pin active; VDD3V3 must be left floating in 5 V mode. |
| Operating Temperature | -40°C to 150°C - Qualified for under-hood automotive and industrial motor drive environments. |
| Output Linearity | ±0.5% (VDD = 5 V, 0.5–4.5 V range) - Ensures sub-degree angular error before ECU compensation. |
| Total Angular Error (w/ dynamic comp.) | ±1° - Achievable using on-system offset/gain correction of OUT1/OUT2 prior to arctan calculation. |
Pinout & Package
MLX90380LDC-BAB-543-SP is housed in an SOIC-8 package (JEDEC MS-012AC, 3.9 mm × 4.9 mm × 1.75 mm body, 1.27 mm pitch). Unused pins (NC) and TEST must be connected to ground for optimal EMC performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VSS | Supply Ground | Primary ground reference for internal circuitry and output stage; must be low-impedance. |
| 2 NC | Not Connected | No internal connection; tie to GND per EMC recommendation. |
| 3 TEST | Test Pin | Factory test interface; connect to GND in application to suppress noise coupling. |
| 4 NC | Not Connected | No internal connection; tie to GND per EMC recommendation. |
| 5 OUT2 | Analog Output SIN | Ratiometric voltage proportional to Bz (Z-axis); used with OUT1 for arctan(OUT2/OUT1) angle calculation. |
| 6 VDD5V | 5 V Supply Input | Active power rail for 5 V operation; VDD3V3 must remain unconnected (floating) when this pin is powered. |
| 7 VDD3V3 | 3.3 V Supply Input | Must be left floating in 5 V mode; not used for MLX90380LDC-BAB-543-SP configuration. |
| 8 OUT1 | Analog Output COS | Ratiometric voltage proportional to Bx (X-axis); paired with OUT2 to resolve absolute angular position. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing Architecture | Simultaneous orthogonal (X/Z) field measurement using integrated vertical + planar Hall elements - eliminates need for external flux concentrators or multi-die assemblies. |
| Selectable Magnetic Axis (X/Z) | Factory-configured X/Z orientation with intentional sensitivity mismatch (Bz ≈ 2×Bx) enables robust through-shaft sensing with two-pole magnets without mechanical alignment constraints. |
| Ratiometric Sine/Cosine Outputs | OUT1/OUT2 scale linearly with VDD, allowing direct ADC interfacing without external reference - simplifies signal chain and improves supply rejection. |
| High-Speed 4 µs Update | Each field component sampled sequentially in 2 µs, enabling real-time angle tracking at >25,000 rpm with <12 µs total tracking delay in high-bandwidth mode. |
| Programmable Bandwidth & Sensitivity | Configurable via external pins to match ADC input range and system dynamics - BAB-543 uses high-bandwidth mode (125 kHz Nyquist) and 30 mT range for NdFeB magnets. |
Applications
| Electric Power Steering (EPS) | Permanent Magnet Synchronous Motor (PMSM) |
|---|---|
|
Use Scenario: Real-time rotor position feedback for field-oriented control in 12 V automotive steering actuators. IC Role / Device Role / Timing Role: Contactless absolute angle resolver delivering synchronized COS/SIN outputs to MCU ADC at 4 µs interval for torque ripple minimization. Use Value: Enables <±1° closed-loop position accuracy after dynamic ECU compensation, meeting ASIL-B functional safety requirements without optical encoders. |
Use Scenario: High-speed commutation in industrial PMSM drives operating up to 25,000 rpm with thermal cycling from -40°C to 150°C. IC Role / Device Role / Timing Role: Primary angular position sensor providing ratiometric analog outputs directly compatible with 12-bit+ SAR ADCs in motor control SoCs. Use Value: Eliminates slip rings and brushes while maintaining <12 µs latency - critical for vector control loop stability at 20 kHz PWM frequencies. |
| Brushless DC (BLDC) Fan Control | Industrial Servo Actuator |
|
Use Scenario: Compact, sealed BLDC cooling fan in telecom base station power supplies requiring long-life position sensing. IC Role / Device Role / Timing Role: End-of-shaft position detector using NdFeB magnet and X/Z axis configuration to tolerate axial misalignment during assembly. Use Value: 30 mT full-scale range and ±40%VDD output swing maximize SNR into low-cost ADCs, reducing BOM cost vs. digital resolvers. |
Use Scenario: Precision angular feedback in robotic joint actuators exposed to vibration, dust, and wide ambient temperature swings. IC Role / Device Role / Timing Role: Through-shaft resolver mounted coaxially with motor shaft, leveraging Z/Y or X/Z axis modes for off-axis magnet placement. Use Value: SOIC-8 package enables PCB-level integration; 150°C rating supports operation adjacent to IGBT heatsinks without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar contactless rotary position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90380LDC-BAB-506-SP | Same SOIC-8 package, NdFeB magnet, X/Z axis, but 70 mT full-scale range and medium-bandwidth mode (29.5 µs tracking delay). | Better suited for lower-speed, high-magnetic-gap applications where signal amplitude margin is prioritized over latency. | Select BAB-506 if magnet air gap exceeds 3 mm or if MCU sampling rate is <50 kSPS; BAB-543 preferred for high-dynamic response. |
| MLX90380LGO-BAB-043-SP | TSSOP-16 dual-die fully redundant package, same BAB-043 option code (30 mT, X/Z, 5 V, high BW), but includes die-level redundancy and separate ground/power pins per die. | Required for ASIL-D systems or safety-critical motor control where fault detection and cross-checking between two independent sensing paths is mandated. | Choose LGO-BAB-043 only when functional safety certification (ISO 26262) demands hardware redundancy; BAB-543 suffices for ASIL-B or non-safety designs. |
Compared with MLX90380LDC-BAB-543-SP, BAB-506 trades update speed for higher magnetic range tolerance, while LGO-BAB-043 adds die-level redundancy at the cost of larger footprint and layout complexity - neither is pin-compatible, and both require distinct PCB design and firmware calibration handling.
Availability
MLX90380LDC-BAB-543-SP is available at Aetrix Electronics and suitable for electric power steering (EPS), industrial PMSM drives, and BLDC fan control requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MLX90380LDC-BAB-543-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 applications, with core expertise in Hall-effect, IR, and pressure sensing technologies.
The MLX90380 product line delivers Triaxis® contactless angular position sensing for motor control and safety-critical systems, designed specifically to replace optical and inductive resolvers in space-constrained, high-temperature environments.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-543-SP?
The MLX90380LDC-BAB-543-SP is factory-programmed for X/Z magnetic axis with sensitivity mismatch (Bz ≈ 2×Bx), as defined by option code BAB-543 per Table 2. This configuration supports through-shaft applications with two-pole magnets and is validated in Figures 7 and 12.1 of the datasheet.
Does MLX90380LDC-BAB-543-SP support both 3.3 V and 5 V operation?
No - MLX90380LDC-BAB-543-SP is configured for 5 V operation only (option code '5' in third digit: BAB-543). VDD5V must be powered at 4.5–5.5 V, and VDD3V3 must remain floating. Attempting 3.3 V operation will result in undefined behavior or failure to initialize.
What is the full-scale magnetic range and magnet type compatibility for MLX90380LDC-BAB-543-SP?
The MLX90380LDC-BAB-543-SP has a 30 mT full-scale magnetic range and is optimized for NdFeB magnets ('B' in BAB-543). This is confirmed in Table 2: BAx-xx3 = 30 mT range, and BAB = NdFeB magnet type. Performance degrades outside this range or with SmCo/Ferrite magnets.
How is the output update timing structured in MLX90380LDC-BAB-543-SP?
MLX90380LDC-BAB-543-SP performs sequential sampling: Bx in 2 µs, then Bz in 2 µs, yielding a total 4 µs output refresh period. With high-bandwidth programming ('5' in first digit), tracking delay is 12 µs - the time from magnetic stimulus change to stable COS/SIN output update - critical for high-rpm motor control.
Can unused pins (NC) on MLX90380LDC-BAB-543-SP be left floating?
No - per Section 9.1 and Figure 12, pins 2 and 4 (NC) and pin 3 (TEST) must be connected to VSS (ground) in the application circuit to ensure optimal EMC performance and prevent noise coupling into the analog outputs. Leaving them floating may cause erratic output behavior or increased EMI susceptibility.
MLX90380LDC-BAB-543-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:
- 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-543-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-543-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-543-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-543-SP reliable?
The price and inventory of MLX90380LDC-BAB-543-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-543-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-543-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-543-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-543-SP?
MLX90380LDC-BAB-543-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-543-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-543-SP?
For technical support, including MLX90380LDC-BAB-543-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-543-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-543-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-543-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-543-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-543-SP?
All MLX90380LDC-BAB-543-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-543-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-543-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-543-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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