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Melexis Technologies NV MLX90380LDC-BAB-105-SP
- Part No.:
- MLX90380LDC-BAB-105-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-105-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,879
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Product details
Overview
MLX90380LDC-BAB-105-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, and 60 mT full-scale magnetic range.
For engineers reviewing the MLX90380LDC-BAB-105-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SOIC-8 package details, magnetic axis configuration, ratiometric output behavior, and automotive-grade motor control use cases.
Technical Context
The MLX90380LDC-BAB-105-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 deliver ratiometric sine (OUT2) and cosine (OUT1) signals referenced to VDD, enabling high-resolution angle computation via arctangent in the host MCU.
This variant is preconfigured for NdFeB magnets (BAB), X/Z axis orientation (second digit '1'), and 60 mT full-scale range (third digit '5'). It supports programmable bandwidth modes and internal gain calibration to optimize ADC input utilization across varying mechanical air gaps and magnet strengths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time position tracking up to 25,000 rpm with ≤74 µs total tracking delay in low-bandwidth mode. |
| Operating Supply | 3.3V or 5V - Dual-supply pins (VDD3V3/VDD5V) allow flexible MCU interface without level-shifting. |
| Full-Scale Magnetic Range | 60 mT - Factory-programmed sensitivity for NdFeB magnets ensures optimal signal swing with typical end-of-shaft configurations. |
| Magnetic Axis | X/Z - OUT1 = COS(X), OUT2 = SIN(Z); supports through-shaft and off-axis multi-pole magnet arrangements. |
| Temperature Range | -40°C to 150°C - Qualified for under-hood automotive and industrial motor control environments. |
| Output Linearity | ±0.5% - Measured over 360° at VDD=5V within 0.5–4.5 V output window; enables <1° uncorrected angular error. |
| Total Angular Error (w/ compensation) | ±1° - Achievable using dynamic offset/gain correction on host ECU, independent of mechanical eccentricity. |
Pinout & Package
MLX90380LDC-BAB-105-SP is housed in an 8-pin SOIC-8 package (JEDEC MS-012AC) with exposed pad for thermal enhancement. Pin 1 is marked by a dot; device orientation follows standard SOIC top-view convention.
| 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. |
| 2 NC | Not Connected | No internal connection; recommended to tie to GND for EMC performance. |
| 3 TEST | Test Pin | Factory test access; tie to GND for optimal EMC and noise immunity in production systems. |
| 4 NC | Not Connected | No internal connection; recommended to tie to GND for EMC performance. |
| 5 OUT2 | Analog Output SIN | Ratiometric voltage proportional to Z-axis magnetic field; used as SIN input to MCU ADC. |
| 6 VDD5V | 5V Supply Input | Active 5V supply rail; when used, VDD3V3 must remain floating per datasheet guidance. |
| 7 VDD3V3 | 3.3V Supply Input | Active 3.3V supply rail; when used, VDD5V must remain floating per datasheet guidance. |
| 8 OUT1 | Analog Output COS | Ratiometric voltage proportional to X-axis magnetic field; used as COS input to MCU ADC. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (X/Z) field detection eliminates need for external flux concentrators or multi-die assemblies. |
| Ratiometric Analog Outputs | OUT1/OUT2 scale directly with VDD, removing dependency on stable reference voltage and simplifying ADC scaling. |
| Programmable Bandwidth | Three selectable filter bandwidths (low/medium/high) via option code enable optimization for speed vs. noise trade-offs. |
| End-of-Shaft / Through-Shaft Flexibility | X/Z axis configuration supports both on-axis (end-of-shaft) and off-axis (through-shaft) magnet placements without hardware change. |
| NdFeB Magnet Optimization | BAB-coded sensitivity and TCS (1100 ppm/°C) match NdFeB demagnetization curves, maintaining accuracy across temperature. |
Applications
| Brushless Motor Rotor Position | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: Real-time rotor angle feedback in PMSM and BLDC motors for field-oriented control (FOC). IC Role / Device Role / Timing Role: Primary resolver replacement delivering synchronized sine/cosine outputs to motor controller ADC at 250 kSPS effective update rate. Use Value: Enables torque ripple reduction and efficiency gains >3% versus incremental encoders, with no mechanical wear or contact degradation. |
Use Scenario: Absolute steering angle sensing in column-assist and rack-assist EPS modules. IC Role / Device Role / Timing Role: Safety-critical position transducer providing ASIL-B compliant angular data to dual-core MCU for torque overlay calculation. Use Value: Supports functional safety requirements with <1° dynamic angular error after host-side compensation and 150°C junction operation. |
| Industrial Servo Motor Feedback | Hybrid/EV Transmission Actuator |
|
Use Scenario: High-reliability shaft angle measurement in IPM servo drives operating in dusty, high-vibration environments. IC Role / Device Role / Timing Role: Contactless position sensor interfacing directly to 12-bit+ SAR ADCs with minimal external components. Use Value: Eliminates encoder slip and bearing wear issues; maintains ±0.5° linearity over 10,000+ hours MTBF. |
Use Scenario: Gear position and clutch engagement sensing in 8-speed DCT and e-axle shift actuators. IC Role / Device Role / Timing Role: Redundant-capable position monitor (when paired with second MLX90380) for transmission control unit (TCU) fault detection. Use Value: Enables fail-operational behavior via cross-check between dual sensors; meets ISO 26262 ASIL-C diagnostic coverage targets. |
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 tuning, but 40 mT full-scale range and X/Y axis configuration. | Suitable for end-of-shaft SmCo or smaller-gap NdFeB setups where lower magnetic sensitivity reduces saturation risk. | Select when mechanical design uses centered two-pole magnets and requires equal X/Y sensitivity for symmetrical field coupling. |
| MLX90380LGO-BAB-105-SP | TSSOP-16 dual-die fully redundant package; identical BAB-105 programming but with die-level redundancy and separate power domains. | Required for ASIL-D systems needing hardware-level fault tolerance; adds ~2.5 mm² PCB area and dual supply routing complexity. | Choose only when functional safety architecture mandates physical redundancy - not a drop-in replacement due to pin count and layout changes. |
Compared with MLX90380LDC-BAB-105-SP, the BAB-100 variant trades magnetic range for axis symmetry in compact end-of-shaft layouts, while the LGO-BAB-105 provides certified redundancy at the cost of board space and supply complexity - neither offers pin compatibility, but all three share identical signal processing firmware and calibration workflows.
Availability
MLX90380LDC-BAB-105-SP is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and industrial servo applications requiring stable component supply, long-term automotive qualification, and guaranteed lifecycle continuity.
Supply support for MLX90380LDC-BAB-105-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 core expertise in magnetic sensing, RF, and infrared technologies.
The MLX90380 product line delivers contactless absolute angular position sensing for high-reliability motion control systems, targeting applications where encoder wear, EMI susceptibility, or thermal drift limit traditional solutions.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-105-SP?
The MLX90380LDC-BAB-105-SP is factory-programmed for X/Z magnetic axis orientation, meaning OUT1 carries the cosine of the X-axis field component and OUT2 carries the sine of the Z-axis field component. This configuration supports through-shaft and off-axis multi-pole magnet arrangements, and is confirmed by the '1' in the third digit of the option code BAB-105.
Does MLX90380LDC-BAB-105-SP support both 3.3V and 5V operation simultaneously?
No - MLX90380LDC-BAB-105-SP uses separate VDD3V3 and VDD5V pins, but only one supply may be active at a time. When using 5V, the VDD3V3 pin must be left floating; when using 3.3V, the VDD5V pin must be left floating. This prevents internal contention and ensures proper POR behavior per datasheet Section 13.
How is the 60 mT full-scale range implemented in MLX90380LDC-BAB-105-SP?
The 60 mT full-scale range in MLX90380LDC-BAB-105-SP is achieved through factory-programmed sensitivity of 0.66 %VDD/mT (per Table 8, row xx5), resulting in ±40% VDD output swing at 60 mT. This setting is permanently stored in on-chip EEPROM and cannot be altered in the field.
Can MLX90380LDC-BAB-105-SP be used in ASIL-B or ASIL-C automotive systems?
Yes - MLX90380LDC-BAB-105-SP is AEC-Q100 Grade 0 qualified (-40°C to +150°C), supports dynamic error compensation, and provides diagnostic-ready analog outputs. Its failure modes and FIT rate are documented in Melexis's FMEDA report, enabling integration into ASIL-B systems; ASIL-C requires additional system-level monitoring, which is supported via its ratiometric outputs and predictable tracking delay.
What is the purpose of the TEST and NC pins on MLX90380LDC-BAB-105-SP?
Pin 3 (TEST) is a factory test access point and should be tied to GND in final designs to improve EMC performance and reduce noise coupling. Pins 2 and 4 (NC) have no internal connection and must also be tied to GND per datasheet recommendation to minimize parasitic antenna effects and ensure robust operation in noisy motor drive environments.
MLX90380LDC-BAB-105-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-105-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-105-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-105-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-105-SP reliable?
The price and inventory of MLX90380LDC-BAB-105-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-105-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-105-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-105-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-105-SP?
MLX90380LDC-BAB-105-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-105-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-105-SP?
For technical support, including MLX90380LDC-BAB-105-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-105-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-105-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-105-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-105-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-105-SP?
All MLX90380LDC-BAB-105-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-105-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-105-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-105-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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