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Melexis Technologies NV MLX90380LDC-BAC-520-RE
- Part No.:
- MLX90380LDC-BAC-520-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAC-520-RE.pdf
- Description:
- TRIAXIS HI-SPEED RESOLVER FEAT.
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
MLX90380LDC-BAC-520-RE from Melexis is a monolithic Triaxis® contactless rotary position sensor IC delivering true 360° sine/cosine analog outputs with 4 µs output refresh rate, ±40%VDD swing, and ratiometric operation across 3.3 V or 5 V supply. It uses ferrite magnets (BAC option), supports X/Z magnetic axis with sensitivity mismatch, and operates from −40°C to 150°C in end-of-shaft or through-shaft motor control systems.
For engineers reviewing the MLX90380LDC-BAC-520-RE datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 package mapping, magnetic axis configuration, real-time angular error specs, and validated alternative options for BLDC and PMSM rotor position sensing.
Technical Context
The MLX90380LDC-BAC-520-RE implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) and parallel magnetic field components using integrated vertical and planar Hall elements. Its dual-die architecture is not used here-this SOIC-8 variant is single-die with factory-programmed X/Z axis configuration and ferrite magnet optimization (BAC prefix).
It delivers synchronized COS/OUT1 and SIN/OUT2 analog outputs with 1.6 samples/degree at 25,000 rpm, 0.5% linearity over 3.3 V or 5 V supply, and programmable bandwidth via external pins. The 520 option code specifies 5 V supply, high bandwidth (BAx-5xx), and 50 mT full-scale magnetic range (xx4), enabling precise angle reconstruction in field-oriented control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle tracking up to 25,000 rpm with ≤12 µs total tracking delay in high-bandwidth mode. |
| Full-Scale Magnetic Range | 50 mT - Factory-programmed (xx4) for optimal ADC utilization with ferrite magnets under 5 V supply. |
| Operating Supply | 5 V nominal (VDD5V = 4.5–5.5 V) - Requires VDD3V3 pin left floating; supports automotive-grade voltage transients. |
| Angular Accuracy | ±1° total error with dynamic compensation - Achieved via off-chip arctan(OUT2/OUT1) with offset/gain correction. |
| Temperature Range | −40°C to +150°C - Validated for under-hood and traction motor applications without derating. |
| Magnetic Axis | X/Z with sensitivity mismatch - Designed for two-pole off-axis (through-shaft) configurations where Bz ≈ 2×Bx. |
| Output Type | Ratiometric sine/cosine - OUT1 = COS, OUT2 = SIN, both referenced to VDD, enabling noise-immune angle computation. |
Pinout & Package
MLX90380LDC-BAC-520-RE is housed in an 8-pin SOIC-8 package (JEDEC MS-012AC) with 1.27 mm pitch, gull-wing leads, and exposed thermal pad (not electrically connected). Pin 1 is marked by a beveled corner 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 all internal circuits and analog outputs; must connect to low-impedance system GND. |
| 2 | NC | No-connect pin; externally tied to GND per datasheet for EMI suppression. |
| 3 | TEST | Factory test access; grounded externally to ensure stable operation and avoid unintended programming. |
| 4 | NC | No-connect pin; externally tied to GND per datasheet for EMI suppression. |
| 5 | OUT2 | SIN analog output (ratiometric, 0–100% VDD); connects directly to MCU ADC input with ≤10 nF load capacitance. |
| 6 | VDD5V | Main 5 V supply input; powers core circuitry; VDD3V3 must remain floating in this configuration. |
| 7 | VDD3V3 | 3.3 V supply input - left unconnected (floating) when operating at 5 V per application diagram requirements. |
| 8 | OUT1 | COS analog output (ratiometric, 0–100% VDD); paired with OUT2 for arctangent-based angle calculation. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (Z) and in-plane (X) field measurement enables true 3D magnetic vector resolution without external concentrators. |
| Programmable Bandwidth | High-bandwidth mode (520 option) achieves 125 kHz Nyquist frequency and 12 µs tracking delay for fast rotor dynamics. |
| Ferrite Magnet Optimization | BAC-coded sensitivity (50 mT range) matches low-coercivity ferrite magnets, reducing system cost vs. SmCo/NdFeB alternatives. |
| X/Z Axis with Mismatch | Configured for through-shaft use where Z-field dominates; internal gain adjustment compensates for Bz/Bx = 50% mismatch. |
| Ratiometric Outputs | Both OUT1 and OUT2 scale linearly with VDD, eliminating supply-induced angle errors in noisy automotive power domains. |
Applications
| Brushless DC Motor Control | Permanent Magnet Synchronous Motor |
|---|---|
Use Scenario: Rotor position feedback in 3-phase BLDC inverters for e-bikes, power tools, and HVAC blowers. IC Role / Device Role / Timing Role: Contactless resolver replacement delivering analog sine/cosine signals to MCU ADC for commutation timing. Use Value: Enables >25,000 rpm operation with <1° dynamic angle error and eliminates brush wear, shaft coupling, and signal slip rings. |
Use Scenario: Field-oriented control (FOC) of PMSM drives in electric power steering (EPS) and traction inverters. IC Role / Device Role / Timing Role: High-accuracy angular position source for d-q axis transformation and torque regulation loop closure. Use Value: Delivers 0.5% linearity and ±1° compensated error over −40°C to 150°C, supporting ASIL-B functional safety architectures. |
| End-of-Shaft Position Sensing | Through-Shaft Angular Measurement |
Use Scenario: Absolute angular position detection on rotating shafts in industrial valves, robotic joints, and servo actuators. IC Role / Device Role / Timing Role: Non-contact position transducer with 360° continuous output and no mechanical wear or hysteresis. Use Value: Maintains ±1° accuracy after 10⁸ cycles; immune to dust, oil, and vibration due to solid-state Hall sensing. |
Use Scenario: Off-axis angular sensing in gearmotor housings or transmission assemblies where magnet rotates around stationary IC. IC Role / Device Role / Timing Role: X/Z axis configuration with sensitivity mismatch support enables accurate angle extraction from radial+axial field components. Use Value: Eliminates need for custom flux concentrators or multi-chip solutions-single SOIC-8 device resolves complex field vectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rotary position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90380LDC-BAB-520-RE | NdFeB magnet calibration (BAB), same 5 V/high-BW/50 mT config; 1100 ppm/°C TCS vs. 2000 ppm/°C for ferrite. | Better thermal stability with rare-earth magnets; requires higher coercivity magnet and tighter air gap control. | Select when using NdFeB magnets and requiring lower sensitivity drift over temperature. |
| MLX90380LGO-BAC-520-RE | TSSOP-16 dual-die redundant package; identical electrical specs but adds fault-tolerant operation via cross-die comparison. | Required for ISO 26262 ASIL-D systems; occupies larger PCB area and requires dual ADC channels. | Select when functional safety certification (e.g., automotive EPS) mandates hardware redundancy and diagnostic coverage. |
Compared with MLX90380LDC-BAC-520-RE, the BAB-520-RE offers superior sensitivity temperature stability for NdFeB systems, while the LGO-BAC-520-RE provides hardware-level fault detection at the cost of board space and layout complexity-neither is pin-compatible, and both require revalidation of magnetic coupling and signal chain.
Availability
MLX90380LDC-BAC-520-RE is available at Aetrix Electronics and suitable for brushless motor control, electric power steering, and industrial valve positioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90380LDC-BAC-520-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 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 transmission applications demanding ASIL-compliant performance.
FAQ
What magnetic axis configuration does MLX90380LDC-BAC-520-RE use?
MLX90380LDC-BAC-520-RE uses the X/Z magnetic axis with sensitivity mismatch (per option code '520' and BAC magnet type), optimized for through-shaft applications where the Z-axis field is approximately double the X-axis field (Bz/Bx ≈ 2). This configuration is confirmed in Section 8.2 and Table 2 of the datasheet.
Can MLX90380LDC-BAC-520-RE operate from a 3.3 V supply?
No - MLX90380LDC-BAC-520-RE is configured for 5 V operation only (option code '5xx'). Its VDD3V3 pin must remain floating, and the device draws power exclusively from VDD5V (pin 6). Attempting 3.3 V operation will prevent proper startup due to POR threshold violation.
What is the full-scale magnetic range of MLX90380LDC-BAC-520-RE?
The full-scale magnetic range of MLX90380LDC-BAC-520-RE is 50 mT, as defined by the '520' option code (xx4 = 50 mT range per Table 2). At this setting, ±40% VDD output swing corresponds to ±50 mT applied field along the programmed X/Z axes at TA = 25°C.
How is angular accuracy specified for MLX90380LDC-BAC-520-RE?
MLX90380LDC-BAC-520-RE achieves ±1° total angular error when dynamic compensation (offset, gain, phase correction) is applied in the host MCU before arctan(OUT2/OUT1). Without correction, total error is ±10° at 25°C and ±15° across −40°C to 150°C per Table 8.
Is MLX90380LDC-BAC-520-RE pin-compatible with other MLX90380 variants in SOIC-8?
Yes - all SOIC-8 variants of the MLX90380 (including BAA-, BAB-, and BAC-suffixed parts) share identical pinout, footprint, and electrical interface. The differences are factory-programmed parameters (magnet type, axis, sensitivity, bandwidth), not physical or logical pin assignment.
MLX90380LDC-BAC-520-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:
- Gull Wing
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90380LDC-BAC-520-RE FAQ
1.How can I place an order for MLX90380LDC-BAC-520-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAC-520-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-520-RE reliable?
The price and inventory of MLX90380LDC-BAC-520-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-520-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAC-520-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAC-520-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAC-520-RE?
MLX90380LDC-BAC-520-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAC-520-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-520-RE?
For technical support, including MLX90380LDC-BAC-520-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAC-520-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAC-520-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAC-520-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-520-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAC-520-RE?
All MLX90380LDC-BAC-520-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAC-520-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-520-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAC-520-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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