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Melexis Technologies NV MLX90380LDC-BAB-123-SP
- Part No.:
- MLX90380LDC-BAB-123-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-123-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
MLX90380LDC-BAB-123-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, 3.3 V/5 V dual-supply support, and -40°C to 150°C operating range for end-of-shaft or through-shaft motor rotor position feedback in BLDC and PMSM drives.
For engineers reviewing the MLX90380LDC-BAB-123-SP datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 package mapping, magnetic axis (X/Z), NdFeB magnet compatibility, 30 mT full-scale range, and high-bandwidth programming mode - all confirmed from Melexis Revision 11 datasheet and ordering code decoding.
Technical Context
The MLX90380LDC-BAB-123-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components, generating synchronized analog outputs where OUT1 = COS and OUT2 = SIN. Its internal chopping architecture operates at 1 MHz, enabling robust noise immunity in electrically noisy motor control environments.
This variant is factory-programmed for X/Z magnetic axis configuration, NdFeB magnet type, 30 mT full-scale magnetic range, 3.3 V supply voltage, and high-bandwidth mode - yielding 125 kHz Nyquist frequency, 12 µs tracking delay, and ±1° total angular error with dynamic compensation at 25,000 rpm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - enables real-time rotor angle tracking up to 25,000 rpm with 1.6 samples/degree resolution. |
| Full-Scale Magnetic Range | 30 mT - optimized for NdFeB magnets in compact end-of-shaft configurations with ±40%VDD output swing. |
| Operating Supply | 3.3 V only - VDD3V3 active; VDD5V must be left floating per application diagram requirements. |
| Magnetic Axis | X/Z - OUT1 responds to BX, OUT2 to BZ; supports off-axis through-shaft mounting with 50% BZ/BXY sensitivity mismatch. |
| Bandwidth Mode | High - 125 kHz Nyquist frequency and 12 µs tracking delay for fast dynamic response in field-oriented control. |
| Temperature Range | -40°C to 150°C - qualified for under-hood automotive and industrial motor drive environments. |
| Output Type | Ratiometric sine/cosine - maintains linearity across supply variation; VOQ = 50%VDD at zero field. |
Pinout & Package
MLX90380LDC-BAB-123-SP is housed in an 8-pin SOIC-8 package (JEDEC MS-012AC) with 1.27 mm pitch, 5.0 mm × 6.2 mm body, and exposed thermal pad (not electrically connected). Pin 1 is marked by notch or dot; pins 2 and 4 are NC and must be grounded for EMC compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Supply ground reference for both analog and digital circuitry; mandatory low-impedance connection to system GND. |
| 2 | NC | No connect - must be tied to GND for optimal EMC performance per datasheet Section 9.1. |
| 3 | TEST | Factory test pin - externally grounded during normal operation to disable test mode and ensure stable startup. |
| 4 | NC | No connect - must be tied to GND for optimal EMC performance per datasheet Section 9.1. |
| 5 | OUT2 | Analog SIN output - ratiometric voltage proportional to BZ; requires 10 kΩ minimum load to GND for valid operation. |
| 6 | VDD5V | 5 V supply input - left floating in 3.3 V mode; not used for MLX90380LDC-BAB-123-SP per option code decoding. |
| 7 | VDD3V3 | 3.3 V supply input - primary power rail; must be decoupled with 100 nF ceramic capacitor close to pin. |
| 8 | OUT1 | Analog COS output - ratiometric voltage proportional to BX; paired with OUT2 for arctan-based angle computation. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable magnetic axis (X/Z) | Enables mechanical flexibility for through-shaft motor designs where Z-axis flux dominates; supports off-axis magnet placement without external concentrators. |
| NdFeB magnet optimization (BAB) | Factory-tuned sensitivity and temperature coefficient for neodymium magnets, reducing calibration overhead in high-torque BLDC applications. |
| 30 mT full-scale range (xx3) | Matches typical air-gap flux densities of small-to-medium industrial motors, maximizing ADC utilization while avoiding saturation. |
| High-bandwidth programming (4xx) | Configures internal filter for 125 kHz Nyquist and 12 µs tracking delay - critical for torque ripple suppression in FOC loops above 10 kHz PWM. |
| Ratiometric analog outputs | Eliminates need for precision voltage references; angle accuracy remains stable despite ±10% VDD variation, easing power supply design. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
|
Use Scenario: Rotor position feedback in 3-phase inverter-driven BLDC motors for HVAC compressors and power tools. IC Role / Device Role / Timing Role: Contactless absolute angular sensor providing real-time COS/SIN signals to MCU for commutation timing and sensorless fallback. Use Value: Enables precise 120° trapezoidal commutation and smooth sinusoidal drive modes with <±1° dynamic angular error at 25,000 rpm. |
Use Scenario: High-accuracy rotor angle acquisition in PMSM servo drives for robotics and CNC spindles. IC Role / Device Role / Timing Role: Resolver replacement delivering true 360° analog position data to FOC algorithm for d-q axis current regulation. Use Value: Supports field-weakening operation up to base speed with 125 kHz signal bandwidth and minimal phase shift (<1.8° at max speed). |
| End-of-Shaft Position Sensing | Through-Shaft Motor Assembly |
|
Use Scenario: Compact angular measurement on motor shaft ends where axial space is constrained. IC Role / Device Role / Timing Role: Triaxis® X/Z axis configuration senses radial (X) and axial (Z) field components from surface-mounted magnets. Use Value: Eliminates need for separate X/Y sensors or complex magnet assemblies; achieves ±0.5° linearity over full 360° rotation. |
Use Scenario: Off-axis angular sensing in gearmotor or transmission housings where magnet rotates around but not on the IC axis. IC Role / Device Role / Timing Role: X/Z axis with sensitivity mismatch (BZ/BXY = 50%) accommodates through-shaft flux geometry without external flux guides. Use Value: Reduces mechanical tolerancing burden and enables direct integration into existing gearbox casings with no magnet repositioning. |
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-RE | SmCo magnet optimized, 40 mT range, X/Y axis, low-bandwidth mode (0xx) | Better suited for high-temperature (>125°C) end-of-shaft applications with SmCo magnets; slower 74 µs tracking delay limits high-speed FOC. | Select when using samarium-cobalt magnets and prioritizing thermal stability over bandwidth. |
| MLX90380LGO-BAB-123-RE | TSSOP-16 dual-die redundant package, same BAB-123 programming | Provides functional safety compliance (ASIL-B ready) via hardware redundancy; larger footprint and higher cost than SOIC-8. | Select for ISO 26262-compliant automotive traction inverters requiring fault-tolerant position sensing. |
Compared with MLX90380LDC-BAB-123-SP, the BAA-000 offers superior high-temperature drift performance but sacrifices bandwidth, while the LGO-BAB-123 adds ASIL-B readiness at the cost of PCB area and BOM complexity - making the LDC-BAB-123-SP optimal for cost-sensitive, high-dynamic industrial BLDC drives.
Availability
MLX90380LDC-BAB-123-SP is available at Aetrix Electronics and suitable for brushless motor control, permanent magnet synchronous motor drives, and end-of-shaft position sensing requiring stable component supply across automotive qualification, industrial automation, and power tool production cycles.
Supply support for MLX90380LDC-BAB-123-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 expertise in magnetic sensing, infrared thermometry, and automotive ASICs.
The MLX90380 product line delivers contactless 360° angular position sensing using Triaxis® Hall technology, designed specifically for high-reliability motor control, steering angle detection, and throttle position feedback in harsh environments.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-123-SP?
The MLX90380LDC-BAB-123-SP is factory-programmed for X/Z magnetic axis configuration, meaning OUT1 responds to the X-component and OUT2 to the Z-component of the applied magnetic field. This supports through-shaft mounting where axial flux dominates, with built-in 50% sensitivity mismatch between axes to match typical off-axis magnet geometries.
Which magnet type is MLX90380LDC-BAB-123-SP optimized for?
MLX90380LDC-BAB-123-SP is optimized for neodymium-iron-boron (NdFeB) magnets, as indicated by the "BAB" option code. Its sensitivity temperature coefficient and full-scale range are calibrated for NdFeB's flux-temperature profile, ensuring minimal angular drift across -40°C to 150°C in BLDC and PMSM applications.
What supply voltage does MLX90380LDC-BAB-123-SP require?
MLX90380LDC-BAB-123-SP operates exclusively from a 3.3 V supply (VDD3V3), as specified by its "4xx" bandwidth code. The VDD5V pin must remain unconnected (floating) per Melexis application diagrams; applying 5 V to VDD5V while powering VDD3V3 may cause undefined behavior or damage.
What is the full-scale magnetic range of MLX90380LDC-BAB-123-SP?
The MLX90380LDC-BAB-123-SP has a factory-programmed full-scale magnetic range of 30 mT, corresponding to the "xx3" suffix in its option code. At this range, a ±30 mT in-plane (X) or axial (Z) field produces a ±40%VDD output swing with 50%VDD quiescent offset, maximizing ADC resolution for typical motor air-gap fields.
How is the bandwidth mode configured in MLX90380LDC-BAB-123-SP?
MLX90380LDC-BAB-123-SP is programmed for high-bandwidth mode ("4xx"), resulting in a 125 kHz Nyquist frequency and 12 µs tracking delay. This mode uses minimal internal filtering to deliver fastest possible response for field-oriented control loops, with output update period fixed at 4 µs regardless of bandwidth selection.
MLX90380LDC-BAB-123-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-123-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-123-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-123-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-123-SP reliable?
The price and inventory of MLX90380LDC-BAB-123-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-123-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-123-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-123-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-123-SP?
MLX90380LDC-BAB-123-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-123-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-123-SP?
For technical support, including MLX90380LDC-BAB-123-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-123-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-123-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-123-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-123-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-123-SP?
All MLX90380LDC-BAB-123-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-123-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-123-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-123-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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