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Melexis Technologies NV MLX90380LDC-BAB-300-RE
- Part No.:
- MLX90380LDC-BAB-300-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-300-RE.pdf
- Description:
- TRIAXIS HI-SPEED RESOLVER FEAT.
- Quantity:
- Payment:
- Shipping:
Inventory:2,155
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Product details
Overview
MLX90380LDC-BAB-300-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 4µs output refresh rate, and is factory-programmed for NdFeB magnets with 30mT full-scale magnetic range and X/Z magnetic axis configuration.
For engineers reviewing the MLX90380LDC-BAB-300-RE datasheet, MLX90380LDC-BAB-300-RE pinout, MLX90380LDC-BAB-300-RE application in motor control, or MLX90380LDC-BAB-300-RE equivalent for resolver replacement, this device provides ratiometric analog outputs, programmable bandwidth, end-of-shaft/through-shaft compatibility, and AEC-Q100 qualified operation in harsh automotive and industrial environments.
Technical Context
The MLX90380LDC-BAB-300-RE 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, enabling direct interface with MCU ADCs without external reference.
Factory-programmed for NdFeB magnets (BAB), 30mT range (xx3), X/Z axis (x1x), and high-bandwidth mode (x5x), it delivers 1.6 samples/degree at 25,000 rpm with ≤74 µs tracking delay. Sensitivity is set to ~1.33%VDD/mT, and offset is trimmed to 50%VDD at zero field.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Dual ratiometric analog: OUT1 (COS), OUT2 (SIN), ±40%VDD swing at full scale |
| Refresh Rate | 4 µs per field component (8 µs total for both outputs), enabling real-time angle tracking up to 25,000 rpm |
| Supply Voltage | 3.135–3.6 V or 4.5–5.5 V; VDD3V3 and VDD5V pins allow single-supply flexibility with floating unused rail |
| Magnetic Range | 30 mT full-scale (BAB-3xx), optimized for NdFeB magnets with X/Z axis sensitivity mismatch compensation |
| Operating Temp | -40°C to +150°C ambient, qualified per AEC-Q100 Grade 0, supporting under-hood and traction motor applications |
| Angular Accuracy | ±1° total error with dynamic compensation; ±10° uncorrected error over full temperature range |
| Output Noise | ≤4.6 mV RMS (high-bandwidth mode), ensuring <0.1° noise-induced angle jitter at typical signal levels |
Pinout & Package
MLX90380LDC-BAB-300-RE uses the SOIC-8 package (5.0 mm × 6.2 mm, 1.27 mm pitch) with exposed pad for thermal performance. Unused pins (NC) and TEST must be connected to ground for optimal EMC.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Primary supply ground reference; connects to PCB ground plane for low-noise analog return path |
| 2 | NC | No-connect pin; must be tied to GND per EMC recommendation |
| 3 | TEST | Factory test access; requires GND connection in application to suppress coupling and ensure stability |
| 4 | NC | No-connect pin; must be tied to GND per EMC recommendation |
| 5 | OUT2 | Analog SIN output; ratiometric to VDD, drives MCU ADC input directly with ≤25 Ω source impedance |
| 6 | VDD5V | 5V supply input; active when 5V operation selected; VDD3V3 must float in this mode |
| 7 | VDD3V3 | 3.3V supply input; active when 3.3V operation selected; VDD5V must float in this mode |
| 8 | OUT1 | Analog COS output; paired with OUT2 to form quadrature signal for arctan-based angle computation |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (X/Z) field detection enables true 3D magnetic positioning without external concentrators |
| Programmable Bandwidth | High-bandwidth mode (BAB-300) sets 125 kHz Nyquist frequency and 74 µs tracking delay for fast rotor dynamics |
| Ratiometric Outputs | Output voltage scales linearly with VDD, eliminating need for precision voltage reference in MCU ADC interface |
| End-of-Shaft / Through-Shaft Support | X/Z axis configuration (BAB-x1x) matches two-pole magnet off-axis (through-shaft) mechanical layouts |
| Factory Magnet Calibration | Pre-programmed for NdFeB magnets (BAB), 30mT range (xx3), and X/Z axis - no field calibration required at system level |
Applications
| Brushless Motor Rotor Position | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time angular feedback for FOC of PMSM in traction inverters and servo drives. IC Role / Device Role / Timing Role: Resolver replacement providing analog sine/cosine signals to MCU for arctan-based angle calculation at ≤4 µs latency. Use Value: Enables >25,000 rpm operation with <1° dynamic angle error, eliminating optical encoder wear and resolver excitation circuitry. |
Use Scenario: High-reliability steering angle sensing in AEC-Q100-compliant EPS modules. IC Role / Device Role / Timing Role: Absolute position sensor mounted on steering column shaft, delivering fail-safe analog outputs to dual-core safety MCU. Use Value: -40°C to 150°C operation and redundancy-ready architecture support ASIL-B functional safety requirements without external diagnostics. |
| Industrial Servo Feedback | Robot Joint Torque Control |
Use Scenario: Compact, non-contact position feedback in space-constrained robotic joint actuators. IC Role / Device Role / Timing Role: Direct-mount SOIC-8 sensor on motor shaft end, interfacing to 12-bit+ ADC with minimal external components. Use Value: 30mT NdFeB-optimized range allows use of small, low-cost magnets; ratiometric outputs reduce BOM by removing voltage references. |
Use Scenario: Multi-axis torque estimation via precise joint angle and speed differentiation in collaborative robots. IC Role / Device Role / Timing Role: High-update-rate angular sensor feeding real-time kinematic models in low-latency motion controllers. Use Value: 4 µs output refresh and <74 µs tracking delay enable sub-millisecond closed-loop response for adaptive impedance control. |
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-RE | Same SOIC-8 package and NdFeB magnet calibration, but low-bandwidth mode (100 → x0x) and 40mT range | Lower update rate (200 µs power-on + 85.5 µs tracking delay); suited for slower motors (<5,000 rpm) or cost-sensitive designs | Select when bandwidth demand is low and higher magnetic range improves SNR in low-field environments |
| MLX90380LGO-BAB-025-RE | TSSOP-16 dual-die redundant package; identical BAB-025 programming (NdFeB, 20mT, X/Z, medium BW) | Provides hardware-level fault tolerance for ASIL-D systems; larger footprint and separate die supplies required | Choose for safety-critical automotive applications requiring dual-channel redundancy and independent failure monitoring |
Compared with MLX90380LDC-BAB-100-RE, the -300-RE offers 12× faster output update and tighter magnetic range for high-dynamic BLDC control; versus MLX90380LGO-BAB-025-RE, it trades redundancy for compactness and lower system cost in non-safety-critical industrial use.
Availability
MLX90380LDC-BAB-300-RE is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and industrial servo applications requiring stable component supply across automotive production cycles and industrial equipment lifecycles.
Supply support for MLX90380LDC-BAB-300-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 sensor solutions for automotive and industrial markets, with core expertise in magnetic sensing, RF, and infrared technologies.
The MLX90380 belongs to Melexis' Triaxis® resolver family, designed specifically to replace legacy resolvers and optical encoders in high-temperature, high-vibration motor control systems with robust, contactless analog angle sensing.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-300-RE?
The MLX90380LDC-BAB-300-RE is factory-programmed for X/Z magnetic axis configuration (indicated by "x1x" in option code), meaning OUT1 responds to BX (COS) and OUT2 to BZ (SIN). This supports through-shaft mounting with off-axis two-pole magnets and includes built-in sensitivity mismatch compensation per datasheet section 8.2.
Does MLX90380LDC-BAB-300-RE require external programming during system integration?
No, MLX90380LDC-BAB-300-RE is fully pre-programmed at wafer/test level for NdFeB magnets (BAB), 30mT range (xx3), X/Z axis (x1x), and high-bandwidth mode (x5x). No field programming or EEPROM writes are needed - it powers up ready for analog interface with MCU ADCs.
How does the supply voltage selection work on MLX90380LDC-BAB-300-RE?
MLX90380LDC-BAB-300-RE supports dual supply rails: VDD5V (pin 6) and VDD3V3 (pin 7). For 5V operation, apply 4.5–5.5 V to VDD5V and leave VDD3V3 floating; for 3.3V operation, apply 3.135–3.6 V to VDD3V3 and leave VDD5V floating - per datasheet section 9.1 and Figure 13.
What is the angular accuracy specification for MLX90380LDC-BAB-300-RE?
MLX90380LDC-BAB-300-RE achieves ±1° total angular error when dynamic compensation (offset/gain/phase correction) is applied in the host MCU. Without correction, uncorrected linearity error is ±10° at 25°C and ±15° across -40°C to 150°C - values confirmed in Table 8 of the datasheet revision 11.
Can MLX90380LDC-BAB-300-RE be used with ferrite or SmCo magnets?
No - MLX90380LDC-BAB-300-RE is specifically calibrated for NdFeB magnets (option code BAB). Using ferrite (BAC) or SmCo (BAA) magnets will cause significant gain and offset errors due to mismatched temperature coefficient compensation and sensitivity scaling; only BAB-coded variants guarantee specified performance with NdFeB.
MLX90380LDC-BAB-300-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°, Continuous
- 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:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90380LDC-BAB-300-RE FAQ
1.How can I place an order for MLX90380LDC-BAB-300-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-300-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-300-RE reliable?
The price and inventory of MLX90380LDC-BAB-300-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-300-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-300-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-300-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-300-RE?
MLX90380LDC-BAB-300-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-300-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-300-RE?
For technical support, including MLX90380LDC-BAB-300-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-300-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-300-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-300-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-300-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-300-RE?
All MLX90380LDC-BAB-300-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-300-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-300-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-300-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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