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Melexis Technologies NV MLX90380LDC-BAB-103-RE
- Part No.:
- MLX90380LDC-BAB-103-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-103-RE.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,940
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Product details
Overview
MLX90380LDC-BAB-103-RE 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, X/Y magnetic axis, and 30 mT full-scale magnetic range.
For engineers reviewing the MLX90380LDC-BAB-103-RE datasheet, MLX90380LDC-BAB-103-RE pinout, MLX90380LDC-BAB-103-RE application in motor control, or MLX90380LDC-BAB-103-RE equivalent for resolver replacement, this page provides verified technical context, SOIC-8 package details, magnetic axis configuration, ratiometric output behavior, and real-world design implications for BLDC and PMSM systems.
Technical Context
The MLX90380LDC-BAB-103-RE implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Y) magnetic field components using integrated vertical and planar Hall elements. Its dual analog outputs-OUT1 (COS) and OUT2 (SIN)-are ratiometric to VDD, with 5–95% VDD swing and ≤1.5% linearity error over temperature.
This variant is preconfigured for X/Y axis operation (equal sensitivity), 30 mT magnetic range, NdFeB magnet optimization, and high-bandwidth programming mode (4 µs update period, 125 kHz Nyquist frequency). It uses internal chopping at 1 MHz and supports dynamic offset/gain compensation via external MCU processing of arctan(OUT2/OUT1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angular tracking up to 25,000 rpm with <74 µs total tracking delay in high-bandwidth mode. |
| Supply Voltage | 3.135–3.6 V or 4.5–5.5 V - Dual-rail support allows direct interface with 3.3V or 5V MCUs without level-shifting. |
| Operating Temperature | -40°C to +150°C - Qualified for under-hood automotive and industrial motor drive environments. |
| Magnetic Range | 30 mT - Factory-set full-scale range optimized for NdFeB magnets in end-of-shaft configurations. |
| Output Linearity | ±0.5% (typ.) - Achieved within 0.5–4.5 V (5V) or 0.33–2.97 V (3.3V) output window, enabling high-resolution angle decoding. |
| Angular Accuracy | ±1° (with dynamic compensation) - Requires external MCU-based offset/amplitude correction after one full revolution. |
| Sensitivity Tempco | 1100 ppm/°C (NdFeB) - Compensates for NdFeB magnet flux decay over temperature, reducing system-level drift. |
Pinout & Package
MLX90380LDC-BAB-103-RE is housed in an RoHS-compliant SOIC-8 package (5.3 mm × 6.2 mm, 1.75 mm height) with gull-wing leads and standard JEDEC MS-012AC footprint. Pin 1 is marked by a notch or dot; unused pins (2, 4) and TEST (3) must be connected to VSS for optimal EMC performance.
| 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; tie to VSS per EMC recommendation to minimize radiated emissions. |
| 3 TEST | Factory Test Pin | Used during wafer sort and final test; connect to VSS in application to suppress noise coupling. |
| 4 NC | Not Connected | No internal connection; tie to VSS per EMC recommendation. |
| 5 OUT2 | Analog Output SIN | Ratiometric voltage proportional to BY field; drives ADC input directly with 5–95% VDD swing. |
| 6 VDD5V | 5V Supply Input | Active when 5V operation selected; VDD3V3 must remain floating in this mode. |
| 7 VDD3V3 | 3.3V Supply Input | Active when 3.3V operation selected; VDD5V must remain floating in this mode. |
| 8 OUT1 | Analog Output COS | Ratiometric voltage proportional to BX field; paired with OUT2 to reconstruct full 360° angle via arctan. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (X/Y) field detection enables true 360° absolute angle measurement without mechanical commutation or multi-turn gears. |
| Selectable Magnetic Axis | X/Y configuration supports end-of-shaft mounting with radial magnet orientation, simplifying mechanical integration in compact BLDC housings. |
| Ratiometric Outputs | OUT1/OUT2 scale linearly with VDD, eliminating need for precision voltage references and improving immunity to supply ripple in noisy motor drive environments. |
| Programmable Bandwidth | High-bandwidth mode (4 µs update) delivers 1.6 samples/degree at 25,000 rpm - sufficient for field-oriented control (FOC) loop rates >10 kHz. |
| NdFeB Magnet Optimization | BAB option code configures sensitivity, temperature coefficient, and offset drift specifically for neodymium magnets, maximizing SNR and thermal stability. |
| Factory Calibration | Pre-programmed for 30 mT range and X/Y axis; optional end-of-line calibration available for <±1° total angular error with dynamic compensation. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
|
Use Scenario: Rotor position feedback for six-step commutation and FOC in 3-phase BLDC motors used in electric power steering (EPS) and HVAC blowers. IC Role / Device Role / Timing Role: Absolute angular encoder replacing optical encoders or resolvers; provides continuous 360° sine/cosine signals synchronized to rotor rotation. Use Value: Enables smooth torque delivery and reduced acoustic noise via precise phase alignment, leveraging 4 µs update rate to support >10 kHz PWM switching. |
Use Scenario: High-accuracy rotor position sensing in traction inverters and industrial servo drives requiring <±1° electrical angle error. IC Role / Device Role / Timing Role: Resolver substitute delivering ratiometric analog outputs compatible with standard resolver-to-digital converters (RDCs) or direct ADC sampling. Use Value: Eliminates bulky transformer-based resolvers while maintaining ASIL-B functional safety readiness through redundant TSSOP-16 variants and on-chip diagnostics. |
| Electric Power Steering (EPS) | Industrial Pump & Compressor Control |
|
Use Scenario: Compact, high-temperature position sensing inside EPS column modules where space and thermal constraints prohibit optical or inductive solutions. IC Role / Device Role / Timing Role: End-of-shaft angular transducer mounted directly on steering shaft; outputs fed to MCU for assist-torque calculation and fault monitoring. Use Value: SOIC-8 footprint fits tight mechanical envelopes; -40°C to 150°C rating ensures reliability across vehicle lifetime without derating. |
Use Scenario: Closed-loop speed and torque control in oil-free screw compressors and centrifugal pumps operating in harsh factory environments. IC Role / Device Role / Timing Role: Through-shaft or end-of-shaft position sensor interfacing with industrial PLCs or motor drives via analog inputs. Use Value: 30 mT magnetic range and NdFeB optimization ensure stable operation despite vibration-induced air-gap variations and ambient EMI. |
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-003-RE | Same SOIC-8 package and NdFeB magnet tuning, but 10 mT full-scale range and 3.3V-only operation. | Better suited for low-field, low-voltage systems with tighter magnetic air gaps and minimal stray fields. | Select when magnet size is constrained and supply is fixed at 3.3V; verify signal-to-noise ratio meets resolution requirements. |
| MLX90380LGO-BAB-103-RE | TSSOP-16 dual-die fully redundant architecture; identical magnetic specs but separate die A/B outputs and doubled pin count. | Required for ASIL-D automotive safety-critical applications where fault detection and cross-checking between two independent channels is mandated. | Choose for ISO 26262-compliant designs needing hardware redundancy; requires PCB layout changes and dual ADC channel allocation. |
Compared with MLX90380LDC-BAB-103-RE, the -003-RE variant trades magnetic range for lower noise floor in 3.3V systems, while the LGO-BAB-103-RE adds functional safety capability at the cost of board area and routing complexity - neither is pin-compatible, and both require revalidation of magnetic coupling and signal chain gain.
Availability
MLX90380LDC-BAB-103-RE is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and industrial pump applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90380LDC-BAB-103-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 markets, with core expertise in magnetic sensing, thermal imaging, and RF communication.
The MLX90380 product line delivers contactless absolute angular position sensing using Triaxis® Hall technology, designed specifically for high-reliability motor control, steering, and actuation systems where resolver-level accuracy and robustness are required without transformer bulk.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-103-RE?
The MLX90380LDC-BAB-103-RE is factory-programmed for X/Y magnetic axis operation, meaning OUT1 responds to the BX field component and OUT2 to the BY component. This configuration supports end-of-shaft mounting with radial permanent magnets and provides equal sensitivity on both axes, enabling accurate 360° angle reconstruction without gain mismatch correction.
Does MLX90380LDC-BAB-103-RE support both 3.3V and 5V supply voltages?
Yes, MLX90380LDC-BAB-103-RE supports dual-supply operation: it can be powered from either 3.135–3.6 V applied to VDD3V3 (with VDD5V floating) or 4.5–5.5 V applied to VDD5V (with VDD3V3 floating). The device automatically adapts its internal biasing and output swing range to the active supply rail, maintaining ratiometric output behavior in both modes.
What is the full-scale magnetic range of MLX90380LDC-BAB-103-RE and how is it set?
The MLX90380LDC-BAB-103-RE has a factory-programmed full-scale magnetic range of 30 mT, indicated by the "103" suffix in the option code. This range defines the in-plane flux density that produces ±40% VDD output swing at 25°C. It is permanently configured during manufacturing and cannot be altered in the field - no EEPROM programming is required for basic operation.
How does MLX90380LDC-BAB-103-RE achieve angular accuracy better than ±1°?
MLX90380LDC-BAB-103-RE achieves ±1° total angular error only when paired with external dynamic compensation - specifically offset, amplitude, and phase correction applied to OUT1/OUT2 signals before arctan computation in the host MCU. The IC itself contributes ≤±10° uncorrected error; the correction algorithm must run after one full magnet revolution to calibrate system-level mechanical and magnetic nonidealities.
Can MLX90380LDC-BAB-103-RE be used in through-shaft configurations?
No - MLX90380LDC-BAB-103-RE is configured for X/Y magnetic axis, which is intended for end-of-shaft (radial field) operation. Through-shaft applications require Z/Y or X/Z axis variants (e.g., BAB-123-RE or BAB-143-RE) that sense axial field components. Using this part in through-shaft setups will result in severely degraded signal amplitude and angle linearity due to misaligned field orientation.
MLX90380LDC-BAB-103-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-103-RE FAQ
1.How can I place an order for MLX90380LDC-BAB-103-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-103-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-103-RE reliable?
The price and inventory of MLX90380LDC-BAB-103-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-103-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-103-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-103-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-103-RE?
MLX90380LDC-BAB-103-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-103-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-103-RE?
For technical support, including MLX90380LDC-BAB-103-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-103-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-103-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-103-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-103-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-103-RE?
All MLX90380LDC-BAB-103-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-103-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-103-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-103-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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