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Melexis Technologies NV MLX90380LDC-BAC-000-SP
- Part No.:
- MLX90380LDC-BAC-000-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAC-000-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MLX90380LDC-BAC-000-SP from Melexis is a monolithic Triaxis® resolver IC delivering true 360° contactless angular position sensing via ratiometric sine/cosine analog outputs, with 4 µs output refresh rate, -40°C to 150°C operating temperature, and programmable X/Y magnetic axis for end-of-shaft configurations using ferrite magnets.
For engineers reviewing the MLX90380LDC-BAC-000-SP datasheet, pinout, applications, or equivalent options, this device serves as a high-accuracy, automotive-grade rotary position sensor in BLDC motor control, field-oriented control, and industrial actuation systems requiring robust thermal stability and magnetic axis flexibility.
Technical Context
The MLX90380LDC-BAC-000-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Y) and parallel (Z) magnetic field components on a single die. Its dual analog outputs deliver synchronized sine/cosine waveforms directly proportional to magnetic angle, with factory-programmed sensitivity for 40 mT full-scale range and ferrite magnet compatibility.
It supports both 3.3 V and 5 V supply operation, features internal chopping at 1 MHz, and enables dynamic compensation of angular error through external MCU-based arctan(OUT2/OUT1) computation with offset/gain correction - critical for achieving ≤±1° total angular error in closed-loop motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time position feedback at up to 25,000 rpm without interpolation delay. |
| 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 direct interface with 3.3 V or 5 V MCUs without level shifting. |
| Full-Scale Magnetic Range | 40 mT - Factory-programmed for ferrite magnets (BAC option code), optimizing ADC utilization in cost-sensitive designs. |
| Magnetic Axis | X/Y - Configured for end-of-shaft mounting with equal sensitivity on orthogonal in-plane axes. |
| Total Angular Error | ≤±1° with dynamic compensation - Achievable via external ECU correction of offset, gain, and phase prior to arctan calculation. |
| Output Type | Ratiometric sine/cosine analog - Output voltages scale linearly with VDD, eliminating supply variation impact on angle accuracy. |
Pinout & Package
MLX90380LDC-BAC-000-SP is housed in an SOIC-8 package with exposed pad (RoHS-compliant, JEDEC MS-012AC). Pin assignments are optimized for EMC: unused pins (NC) and TEST must be tied to ground per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VSS | Supply Ground | Main ground reference for analog and digital sections; requires low-impedance connection to PCB ground plane. |
| 2 NC | Not Connected | Internally unconnected; must be externally tied to GND for optimal EMC performance. |
| 3 TEST | Test Pin | Factory test access; tied to GND in production to suppress noise and improve immunity. |
| 4 NC | Not Connected | Internally unconnected; must be externally tied to GND for optimal EMC performance. |
| 5 OUT2 | Analog Output SIN | Sine waveform output referenced to VDD; ratiometric, 0–100% VDD swing, ±40% VDD full scale. |
| 6 VDD5V | 5 V Supply Input | Active 5 V rail; when used, VDD3V3 must remain floating per application diagram requirements. |
| 7 VDD3V3 | 3.3 V Supply Input | Active 3.3 V rail; when used, VDD5V must remain floating per application diagram requirements. |
| 8 OUT1 | Analog Output COS | Cosine waveform output referenced to VDD; ratiometric, 0–100% VDD swing, ±40% VDD full scale. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Single-die simultaneous measurement of orthogonal (X/Y) magnetic field components enables compact end-of-shaft placement without mechanical alignment constraints. |
| Programmable Magnetic Axis | X/Y configuration (BAC-000) ensures matched sensitivity for in-plane flux detection in standard rotary encoder assemblies with surface-mounted ferrite magnets. |
| 4 µs Output Update Period | Enables sub-degree position resolution at 25,000 rpm - sufficient for high-speed PMSM and BLDC commutation timing in traction inverters. |
| Ratiometric Analog Outputs | Eliminates need for precision voltage references; OUT1/OUT2 scaling tracks VDD variation, preserving angle accuracy across supply tolerances. |
| Ferrite Magnet Optimization | BAC option code configures 40 mT full-scale range and temperature coefficient targeting ferrite magnets - reducing system BOM cost vs. SmCo/NdFeB alternatives. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
Use Scenario: Rotor position feedback for six-step commutation in 48 V automotive HVAC blowers and power steering assist motors. IC Role / Device Role / Timing Role: Primary angular position sensor providing real-time sine/cosine signals to MCU for precise electronic commutation timing. Use Value: Enables >95% efficiency and low acoustic noise by synchronizing MOSFET switching with exact rotor angle, leveraging 4 µs update rate and ±1° compensated accuracy. |
Use Scenario: Field-oriented control (FOC) in electric powertrain inverters where torque ripple minimization demands high-fidelity rotor angle data. IC Role / Device Role / Timing Role: Resolver substitute delivering analog sine/cosine outputs for FOC loop closure with minimal latency and no excitation circuitry. Use Value: Eliminates bulky transformer-based resolvers while maintaining <±1° dynamic angular error under thermal stress - validated from -40°C to 150°C. |
| Industrial Actuator Position Sensing | Steering Angle Sensor Module |
Use Scenario: Absolute angular feedback in hydraulic valve spool positioners and robotic joint encoders operating in dusty, high-vibration environments. IC Role / Device Role / Timing Role: Contactless position transducer replacing potentiometers and optical encoders in IP67-rated actuators. Use Value: Delivers lifetime reliability with no wear-out mechanism, supported by 150°C junction rating and AEC-Q100 qualified construction. |
Use Scenario: Redundant primary angle sensing in ASIL-B compliant steering angle modules for ADAS and steer-by-wire systems. IC Role / Device Role / Timing Role: High-integrity angular sensor providing independent sine/cosine channel pair for cross-checking against secondary sensing path. Use Value: Supports fault detection via amplitude/offset monitoring on OUT1/OUT2, meeting ISO 26262 diagnostic coverage requirements for angle plausibility checks. |
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-000-SP | Uses SmCo magnet instead of ferrite; higher sensitivity temperature coefficient (350 ppm/°C vs. 2000 ppm/°C) and tighter 10 mT–40 mT usable range. | Better suited for high-precision, narrow-temperature-range applications where magnet cost is secondary to thermal stability. | Select BAA only if SmCo magnet integration is feasible and system-level calibration can accommodate lower TCS drift. |
| MLX90380LGO-BAC-000-SP | Dual-die TSSOP-16 package with fully redundant signal paths; identical magnetic specs but separate VDD/VSS per die and doubled pin count. | Required for ASIL-D functional safety architectures needing hardware redundancy and failure mode analysis per ISO 26262. | Choose LGO-BAC only when architectural redundancy is mandated - not a drop-in replacement due to package, pinout, and layout changes. |
Compared with MLX90380LDC-BAC-000-SP, the BAA variant trades ferrite cost advantage for superior SmCo thermal tracking, while the LGO-BAC variant adds physical redundancy at the expense of board space and routing complexity - neither offers pin compatibility, making them distinct design choices rather than direct substitutes.
Availability
MLX90380LDC-BAC-000-SP is available at Aetrix Electronics and suitable for brushless motor control, field-oriented control, and industrial actuation requiring stable component supply across automotive production cycles and industrial equipment lifecycles.
Supply support for MLX90380LDC-BAC-000-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 magnetic sensing, thermal imaging, and RF communication.
The MLX90380 product line delivers Triaxis®-based contactless angular position sensing for high-reliability motor control and safety-critical systems, designed specifically to replace legacy resolvers and optical encoders in harsh environments.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAC-000-SP?
The MLX90380LDC-BAC-000-SP is factory-programmed for X/Y magnetic axis configuration, meaning it measures orthogonal in-plane magnetic field components (BX and BY) with equal sensitivity - optimized for end-of-shaft mounting with ferrite magnets. This is confirmed by the BAC-000 option code per Melexis ordering documentation.
Does MLX90380LDC-BAC-000-SP support both 3.3 V and 5 V supply rails simultaneously?
No. MLX90380LDC-BAC-000-SP supports either 3.3 V or 5 V operation, but not both concurrently. When using VDD3V3, the VDD5V pin must be left floating; when using VDD5V, the VDD3V3 pin must be left floating - as specified in Section 13.1 of the datasheet and reinforced in pin description Table 4.
What is the full-scale magnetic range programmed in MLX90380LDC-BAC-000-SP?
The MLX90380LDC-BAC-000-SP is programmed for a 40 mT full-scale magnetic range, corresponding to the "xx0" suffix in the BAC-000 option code. This setting produces ±40% VDD output swing at TA = 25°C with VOQ = 50% VDD, as defined in Table 2 of the datasheet.
Can MLX90380LDC-BAC-000-SP be used in ASIL-B or ASIL-D systems?
MLX90380LDC-BAC-000-SP is AEC-Q100 qualified and supports ASIL-B via diagnostics (e.g., output amplitude monitoring), but does not provide hardware redundancy. For ASIL-D, Melexis recommends the dual-die MLX90380LGO-BAC-000-SP variant, which implements physically independent signal paths per ISO 26262 requirements.
How is angular accuracy achieved with MLX90380LDC-BAC-000-SP in motor control?
MLX90380LDC-BAC-000-SP achieves ≤±1° total angular error through dynamic compensation: the MCU applies offset, gain, and phase correction to OUT1/OUT2 before computing arctan(OUT2/OUT1). This method corrects for sensor nonlinearity, magnet eccentricity, and thermal drift - as detailed in Section 12.2.2 and Application Note AN-1021.
MLX90380LDC-BAC-000-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-BAC-000-SP FAQ
1.How can I place an order for MLX90380LDC-BAC-000-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAC-000-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-BAC-000-SP reliable?
The price and inventory of MLX90380LDC-BAC-000-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-BAC-000-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAC-000-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAC-000-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAC-000-SP?
MLX90380LDC-BAC-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAC-000-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-BAC-000-SP?
For technical support, including MLX90380LDC-BAC-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAC-000-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAC-000-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAC-000-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-BAC-000-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAC-000-SP?
All MLX90380LDC-BAC-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAC-000-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-BAC-000-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAC-000-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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