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Melexis Technologies NV MLX90380LDC-BAC-125-RE
- Part No.:
- MLX90380LDC-BAC-125-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAC-125-RE.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,917
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Product details
Overview
MLX90380LDC-BAC-125-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 Ferrite magnet compatibility with X/Z magnetic axis and high-bandwidth (5V) operation.
For engineers reviewing the MLX90380LDC-BAC-125-RE datasheet, MLX90380LDC-BAC-125-RE pinout, MLX90380LDC-BAC-125-RE application in motor control, or MLX90380LDC-BAC-125-RE equivalent for resolver replacement, this device provides ratiometric dual analog outputs, programmable sensitivity (60 mT full-scale range), and end-of-shaft/through-shaft flexibility in SOIC-8 packaging.
Technical Context
The MLX90380LDC-BAC-125-RE implements Triaxis® Hall technology to simultaneously sense orthogonal and parallel magnetic flux components relative to the IC surface. Its dual-output architecture delivers synchronized COS and SIN signals derived from Bz and BX field components under X/Z axis configuration.
This variant uses Ferrite magnets (BAC prefix), is configured for high-bandwidth 5V operation (suffix -125 → BAx-125: 5V, high BW, X/Z axis, 60 mT range), and supports dynamic angle computation via external arctan(OUT2/OUT1) with <±1° total angular error when compensated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Dual ratiometric analog: OUT1 = COS, OUT2 = SIN, proportional to magnetic field components |
| Full-Scale Magnetic Range | 60 mT - enables accurate angular resolution with Ferrite magnets in high-temperature environments |
| Output Refresh Rate | 4 µs - supports real-time position tracking up to 25,000 RPM without interpolation delay |
| Supply Voltage | 4.5–5.5 V - high-bandwidth mode requires stable 5V rail; VDD3V3 pin must be left floating |
| Operating Temperature | -40°C to +150°C - qualified for under-hood automotive and industrial motor control applications |
| Magnetic Axis | X/Z - OUT1 responds to Bx (COS), OUT2 to Bz (SIN); optimized for off-axis through-shaft configurations |
| Angular Accuracy | ±1° total error with dynamic compensation - enables field-oriented control (FOC) without external calibration hardware |
Pinout & Package
MLX90380LDC-BAC-125-RE is housed in an 8-pin SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch) with exposed pad for thermal enhancement. 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 analog and digital circuitry; connects to system GND plane |
| 2 NC | Not Connected | Internally unconnected; must be tied to GND per EMC guidelines |
| 3 TEST | Test Pin | Factory test interface; externally grounded to suppress noise and improve immunity |
| 4 NC | Not Connected | Internally unconnected; must be tied to GND per EMC guidelines |
| 5 OUT2 | Analog Output SIN | Sine output referenced to VDD; ratiometric, 0–100% VDD swing, ±40% VDD at full scale |
| 6 VDD5V | 5V Supply Input | Active power rail for high-bandwidth operation; VDD3V3 must remain floating |
| 7 VDD3V3 | 3.3V Supply Input | Unused in this variant; must be left floating to prevent supply contention |
| 8 OUT1 | Analog Output COS | Cosine output referenced to VDD; synchronized with OUT2, same ratiometric scaling |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (Z) and in-plane (X) field detection enables true 3D magnetic vector resolution |
| Ratiometric Analog Outputs | Output voltages scale directly with VDD, eliminating supply voltage drift in downstream ADC conversion |
| Ferrite Magnet Optimization | BAC option code configures internal gain and temperature compensation specifically for cost-effective Ferrite magnets |
| X/Z Magnetic Axis | Enables robust through-shaft mounting with two-pole magnets while maintaining high signal-to-noise ratio |
| High-Bandwidth Mode | 5V-powered operation with 4 µs update period supports closed-loop FOC at >20 kHz electrical frequency |
Applications
| Brushless Motor Rotor Position | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: Real-time angular feedback for field-oriented control of PMSM and BLDC motors in traction inverters and servo drives. IC Role / Device Role / Timing Role: Primary resolver-replacement position sensor providing synchronized COS/SIN outputs to MCU ADC inputs. Use Value: Enables torque ripple reduction and efficiency gains via precise rotor alignment, supported by ±1° compensated accuracy over full temperature range. |
Use Scenario: High-reliability angular sensing in steering column-mounted motor position feedback loops for EPS systems. IC Role / Device Role / Timing Role: Contactless absolute position detector interfacing directly with 12-bit+ automotive-grade ADCs. Use Value: Delivers functional safety-ready position data with AEC-Q100 Grade 0 qualification and 150°C operation capability. |
| Industrial Servo Actuators | Rotary Valve Position Monitoring |
|
Use Scenario: Closed-loop position control in robotic joint actuators requiring sub-degree repeatability across thermal cycling. IC Role / Device Role / Timing Role: High-speed analog resolver substitute enabling direct connection to FPGA or DSP-based motion controllers. Use Value: 4 µs output latency allows deterministic sampling at 250 kSPS, supporting 10 µs control loop execution. |
Use Scenario: Non-contact angular monitoring of quarter-turn rotary valves in harsh chemical processing environments. IC Role / Device Role / Timing Role: End-of-shaft mounted position transducer operating in sealed enclosures with minimal mechanical wear. Use Value: Ferrite magnet compatibility reduces system cost while maintaining 150°C operational margin in steam-traced piping systems. |
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-125-RE | Uses NdFeB magnet instead of Ferrite; higher sensitivity (60 mT range retained), but different TCS (1100 ppm/°C vs. 2000 ppm/°C) | Better SNR in low-field conditions; less suitable for high-temp Ferrite-based designs where field strength degrades significantly | Select BAB-125 only if NdFeB magnet is used and thermal drift compensation aligns with system calibration strategy |
| MLX90380LGO-BAC-125-RE | TSSOP-16 dual-die redundant architecture vs. SOIC-8 single die; identical magnetic programming and electrical specs | Required for ASIL-D functional safety architectures needing hardware redundancy; occupies larger PCB area and higher cost | Choose LGO-BAC-125 only when ISO 26262 ASIL-D compliance mandates dual-channel fault detection |
Compared with MLX90380LDC-BAC-125-RE, the BAB-125 variant trades Ferrite compatibility for NdFeB-specific optimization, while the LGO-BAC-125 adds hardware redundancy at the expense of footprint and cost-neither offers pin compatibility or drop-in replacement capability.
Availability
MLX90380LDC-BAC-125-RE is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and industrial servo actuator applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90380LDC-BAC-125-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 and embedded signal processing.
The MLX90380 product line delivers contactless absolute angular position sensing using Triaxis® technology, designed specifically for high-reliability motor control, steering, and actuation systems demanding AEC-Q100 qualification and extended temperature operation.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAC-125-RE?
The MLX90380LDC-BAC-125-RE is factory-programmed for X/Z magnetic axis operation, meaning OUT1 (COS) responds to the Bx field component and OUT2 (SIN) to the Bz component. This configuration supports through-shaft mounting with two-pole magnets and is explicitly defined by the "-125" option code in the ordering part number.
Does MLX90380LDC-BAC-125-RE require external programming after soldering?
No, MLX90380LDC-BAC-125-RE is fully pre-programmed at wafer/test level for Ferrite magnet use, X/Z axis, 60 mT full-scale range, and high-bandwidth 5V operation. No post-soldering programming is needed; the device powers up ready for analog output acquisition.
Can MLX90380LDC-BAC-125-RE operate from a 3.3V supply?
No - the "-125" suffix indicates 5V high-bandwidth mode. For MLX90380LDC-BAC-125-RE, VDD5V must be powered with 4.5–5.5 V, and VDD3V3 must remain floating. Attempting to drive VDD3V3 will cause undefined behavior or damage due to internal supply contention.
What is the maximum rotational speed MLX90380LDC-BAC-125-RE supports?
MLX90380LDC-BAC-125-RE supports up to 25,000 RPM with <1.8° signal phase shift and 1.6 samples per degree at full speed. Its 4 µs output update period ensures minimal latency for real-time field-oriented control loops in high-speed motor applications.
How does the ratiometric output of MLX90380LDC-BAC-125-RE benefit system design?
The ratiometric output of MLX90380LDC-BAC-125-RE means both OUT1 and OUT2 scale linearly with VDD, so their ratio (used for arctan calculation) remains independent of supply voltage variation. This eliminates need for precision voltage references and simplifies ADC interface design in noisy automotive or industrial power environments.
MLX90380LDC-BAC-125-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-BAC-125-RE FAQ
1.How can I place an order for MLX90380LDC-BAC-125-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAC-125-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-BAC-125-RE reliable?
The price and inventory of MLX90380LDC-BAC-125-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-BAC-125-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAC-125-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAC-125-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAC-125-RE?
MLX90380LDC-BAC-125-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAC-125-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-BAC-125-RE?
For technical support, including MLX90380LDC-BAC-125-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAC-125-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAC-125-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAC-125-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-BAC-125-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAC-125-RE?
All MLX90380LDC-BAC-125-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAC-125-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-BAC-125-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAC-125-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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