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Melexis Technologies NV MLX90380LDC-BAB-125-SP
- Part No.:
- MLX90380LDC-BAB-125-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-125-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,354
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Product details
Overview
MLX90380LDC-BAB-125-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, X/Z magnetic axis configuration, and 60 mT full-scale magnetic range.
For engineers reviewing the MLX90380LDC-BAB-125-SP datasheet, pinout, applications, or equivalent options, this device serves as a high-accuracy resolver replacement in motor control feedback loops where end-of-shaft or through-shaft mounting, wide temperature operation, and ratiometric analog outputs are required.
Technical Context
The MLX90380LDC-BAB-125-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 ±40% VDD swing at full scale with 50% VDD quiescent level.
Programmable bandwidth (high/medium/low) and on-chip signal conditioning-including sample-and-hold filtering with configurable time constant-enable optimization for dynamic response versus noise rejection. The device supports programming via its connector pins and includes factory calibration for angular accuracy up to ±1° with dynamic compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle tracking up to 25,000 RPM with minimal latency in closed-loop motor control. |
| Full-Scale Magnetic Range | 60 mT - Matches NdFeB magnets in X/Z axis configuration, ensuring optimal ADC utilization without external gain stages. |
| Operating Supply | 3.3 V or 5 V - Dual-rail support allows direct interface with common MCU ADC reference voltages and simplifies power domain design. |
| Temperature Range | -40°C to +150°C - Qualified for under-hood automotive and industrial motor drive environments without derating. |
| Output Linearity | ±0.5% - Achieved over 360° rotation with VDD=5V and output voltage within 0.5–4.5 V, supporting high-fidelity field-oriented control. |
| Total Angular Error | ±1° with dynamic compensation - Reflects system-level accuracy after offset/gain correction applied by host ECU prior to arctan computation. |
| Magnetic Axis | X/Z - Enables robust sensing in through-shaft configurations where magnetic flux is oriented perpendicular to IC surface along Z and in-plane along X. |
Pinout & Package
MLX90380LDC-BAB-125-SP is housed in an SOIC-8 package (5.3 mm × 6.2 mm, 1.27 mm pitch), optimized for surface-mount assembly and thermal performance in high-temperature motor control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VSS | Supply Ground | Primary ground reference for internal circuitry and analog output return path; must be low-impedance connection. |
| 2: NC | Not Connected | No internal connection; recommended to tie to VSS for EMC integrity per datasheet guidance. |
| 3: TEST | Test Pin | Factory test access point; tie to VSS for optimal EMC behavior in production systems. |
| 4: NC | Not Connected | No internal connection; recommended to tie to VSS for EMC integrity per datasheet guidance. |
| 5: OUT2 | Analog Output SIN | Ratiometric sine output referenced to VDD; delivers 50% VDD quiescent level and ±40% VDD swing at 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 | Ratiometric cosine output referenced to VDD; complements OUT2 to enable full 360° angular reconstruction. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing Architecture | Simultaneous orthogonal (X/Z) field detection eliminates need for external flux concentrators or multi-die assemblies in through-shaft applications. |
| Selectable X/Z Magnetic Axis | Enables mechanical flexibility for both end-of-shaft and through-shaft magnet arrangements without redesigning PCB layout or sensor mounting. |
| 60 mT Full-Scale Range (NdFeB) | Optimized sensitivity for high-energy NdFeB magnets, maximizing signal-to-noise ratio and reducing susceptibility to stray field interference. |
| Ratiometric Sine/Cosine Outputs | Eliminates need for precision voltage references in MCU ADC subsystems; output scaling remains consistent across VDD variations. |
| High-Bandwidth Programming Mode | Supports 4 µs update period and <12 µs tracking delay, enabling accurate position capture in high-speed PMSM and BLDC commutation. |
Applications
| Brushless Motor Rotor Position Feedback | PMSM Field-Oriented Control |
|---|---|
|
Use Scenario: Real-time angular measurement of rotor position in a 3-phase permanent magnet synchronous motor driving an electric power steering system. IC Role / Device Role / Timing Role: Resolver replacement providing analog sine/cosine signals to MCU ADC for continuous 360° angle calculation and torque vectoring. Use Value: Enables precise current phase alignment at up to 25,000 RPM while maintaining ±1° total angular error after dynamic ECU compensation. |
Use Scenario: Closed-loop speed and torque regulation in an industrial servo drive operating in harsh thermal environments. IC Role / Device Role / Timing Role: High-accuracy angular transducer feeding FOC algorithm with sub-microsecond timing consistency between COS and SIN channels. Use Value: Delivers 4 µs output refresh and ratiometric outputs that maintain linearity across 3.3 V/5 V supply rails and -40°C to 150°C ambient. |
| Electric Powertrain Throttle Actuation | Heavy-Duty Vehicle Steering Angle Sensing |
|
Use Scenario: Absolute position feedback for a brushless DC throttle actuator in a commercial vehicle diesel engine management system. IC Role / Device Role / Timing Role: Contactless angular sensor interfacing directly to ASIL-B compliant MCU ADC with no external signal conditioning required. Use Value: Supports AEC-Q100 Grade 0 qualification via -40°C to 150°C operation, 60 mT NdFeB sensitivity, and X/Z axis configuration for compact through-shaft integration. |
Use Scenario: Redundant steering angle measurement in off-highway construction equipment requiring functional safety compliance. IC Role / Device Role / Timing Role: Primary angular transducer in dual-redundant architecture, delivering synchronized COS/SIN pairs for cross-checking and fault detection. Use Value: Provides programmable bandwidth and factory calibration traceability to meet ISO 26262 ASIL-C requirements for steering angle accuracy and reliability. |
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-100-SP | Same SOIC-8 package and NdFeB magnet option, but programmed for 40 mT full-scale range and X/Y magnetic axis. | Suitable for end-of-shaft configurations with lower magnetic field strength; requires different mechanical mounting orientation. | Select when using SmCo or lower-strength NdFeB magnets and space-constrained end-of-shaft layouts. |
| MLX90380LGO-BAB-125-SP | TSSOP-16 dual-die fully redundant package; identical magnetic programming (NdFeB, X/Z, 60 mT) and electrical specs. | Required for ASIL-D or dual-channel safety architectures; occupies larger PCB area and requires two independent power domains. | Choose for automotive safety-critical systems needing hardware redundancy and fault-tolerant angular reporting. |
Compared with MLX90380LDC-BAB-125-SP, the BAB-100 variant trades magnetic range and axis for compact end-of-shaft fit, while the LGO-BAB-125 provides hardware redundancy at the cost of footprint and layout complexity-neither offers pin compatibility, but all share identical signal processing architecture and programming interface.
Availability
MLX90380LDC-BAB-125-SP is available at Aetrix Electronics and suitable for brushless motor control, field-oriented control, and electric powertrain throttle actuation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MLX90380LDC-BAB-125-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 contactless absolute angular position sensing using Triaxis® Hall technology, designed specifically for high-reliability motor control, steering, and powertrain systems demanding extended temperature operation and functional safety readiness.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-125-SP?
The MLX90380LDC-BAB-125-SP is factory-programmed for X/Z magnetic axis configuration, meaning OUT1 responds to the Z-axis magnetic field component and OUT2 to the X-axis component. This enables robust through-shaft sensing where flux is oriented perpendicular to the IC surface along Z and in-plane along X. The option code "BAB-125" confirms NdFeB magnet compatibility and 60 mT full-scale range.
Does MLX90380LDC-BAB-125-SP support both 3.3 V and 5 V supply voltages simultaneously?
No, MLX90380LDC-BAB-125-SP supports either 3.3 V or 5 V operation-not both concurrently. Pin 6 (VDD5V) and Pin 7 (VDD3V3) are separate supply inputs; only one should be powered while the other is left floating. The device automatically detects active supply rail and configures internal biasing accordingly, as specified in Section 13.1 of the datasheet.
What is the output update rate and tracking delay of MLX90380LDC-BAB-125-SP?
The MLX90380LDC-BAB-125-SP achieves a 4 µs output update period in high-bandwidth mode, with a corresponding tracking delay of ≤12 µs. This delay represents the time between magnetic stimulus rotation and stable COS/SIN output change, including internal sample-and-hold filtering. The value is fixed by the BAB-125 option code's high-bandwidth programming setting.
Can MLX90380LDC-BAB-125-SP be reprogrammed in-system?
Yes, MLX90380LDC-BAB-125-SP supports programming through its connector pins (VDD, VSS, OUT1, OUT2) using Melexis' PSF protocol. Parameters including magnetic axis, sensitivity range, bandwidth, and TCS can be modified post-soldering. However, factory-programmed settings like NdFeB magnet type and X/Z axis are locked unless overwritten via valid PTC command sequence.
What is the total angular accuracy of MLX90380LDC-BAB-125-SP over temperature?
MLX90380LDC-BAB-125-SP achieves ±1° total angular error over -40°C to +150°C when dynamic compensation (offset, gain, phase correction) is applied by the host ECU prior to arctan(OUT2/OUT1) computation. Without compensation, total error is ±15° across the full temperature range, as specified in Table 8 of the datasheet.
MLX90380LDC-BAB-125-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-125-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-125-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-125-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-125-SP reliable?
The price and inventory of MLX90380LDC-BAB-125-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-125-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-125-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-125-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-125-SP?
MLX90380LDC-BAB-125-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-125-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-125-SP?
For technical support, including MLX90380LDC-BAB-125-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-125-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-125-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-125-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-125-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-125-SP?
All MLX90380LDC-BAB-125-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-125-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-125-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-125-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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