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Melexis Technologies NV MLX90380LDC-BAC-520-SP
- Part No.:
- MLX90380LDC-BAC-520-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAC-520-SP.pdf
- Description:
- TRIAXIS HI-SPEED RESOLVER FEAT.
- Quantity:
- Payment:
- Shipping:
Inventory:3,354
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Product details
Overview
MLX90380LDC-BAC-520-SP from Melexis is a monolithic Triaxis® resolver IC delivering true 360° contactless angular position sensing via ratiometric sine/cosine analog outputs, with 4 µs output refresh rate, 3.3 V/5 V dual-supply support, -40°C to 150°C operating range, and factory-programmed ferrite-magnet sensitivity (50 mT full-scale range) for end-of-shaft or through-shaft motor rotor position feedback in BLDC and PMSM systems.
For engineers reviewing the MLX90380LDC-BAC-520-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SOIC-8 package details, magnetic axis configuration (X/Z), high-bandwidth programming mode, and real-world motor control design implications - all derived from Melexis Revision 11 datasheet and ordering documentation.
Technical Context
The MLX90380LDC-BAC-520-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components using integrated vertical and planar Hall elements, enabling precise angular computation via arctan(OUT2/OUT1). Its dual analog outputs are ratiometric to supply voltage and internally filtered with programmable bandwidth (high BW selected by option code '520').
This variant uses ferrite magnets (BAC prefix), operates with X/Z magnetic axis configuration ('5' in third digit of option code), and supports high-bandwidth mode ('5xx' suffix), yielding 125 kHz Nyquist frequency, 12 µs tracking delay, and 1.6 samples/degree at 25,000 rpm - optimized for fast-field-oriented control loops in automotive and industrial motors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - enables real-time angular tracking up to 25,000 rpm with minimal latency in closed-loop motor control. |
| Supply Voltage | 3.135–3.6 V or 4.5–5.5 V - dual-rail compatibility allows direct interfacing with 3.3 V or 5 V MCUs without level shifting. |
| Full-Scale Magnetic Range | 50 mT - factory-programmed for ferrite magnets, matching typical flux density of cost-optimized rotor assemblies. |
| Magnetic Axis | X/Z - OUT1 measures BX, OUT2 measures BZ; supports off-axis through-shaft configurations with sensitivity mismatch compensation. |
| Operating Temperature | -40°C to 150°C - qualified for under-hood automotive and industrial motor drive environments without derating. |
| Angular Accuracy | ±1° total error with dynamic compensation - achievable via external ECU offset/gain correction, critical for torque ripple minimization. |
| Output Type | Ratiometric sine/cosine analog - eliminates supply-voltage drift impact on angle calculation; simplifies ADC scaling in MCU firmware. |
Pinout & Package
MLX90380LDC-BAC-520-SP is housed in an 8-pin SOIC-8 package (JEDEC MS-012AC) with exposed pad for thermal enhancement and RoHS-compliant matte tin lead finish. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Supply ground reference for internal circuitry and output stage; must be low-impedance connection to system GND. |
| 2 | NC | No connect - electrically isolated; recommended to tie to GND for EMC improvement per datasheet guidance. |
| 3 | TEST | Factory test pin - not used in normal operation; tie to GND for optimal EMC performance. |
| 4 | NC | No connect - electrically isolated; recommended to tie to GND for EMC improvement. |
| 5 | OUT2 | Analog SIN output - voltage proportional to BZ component; ratiometric to VDD, ±40%VDD swing at full scale. |
| 6 | VDD5V | 5 V supply input - active when operating in 5 V mode; VDD3V3 must remain floating in this configuration. |
| 7 | VDD3V3 | 3.3 V supply input - active when operating in 3.3 V mode; VDD5V must remain floating in this configuration. |
| 8 | OUT1 | Analog COS output - voltage proportional to BX component; ratiometric to VDD, ±40%VDD swing at full scale. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable magnetic axis (X/Z) | Enables mechanical flexibility for through-shaft motor designs where Z-axis flux dominates; avoids costly magnet reorientation. |
| Ferrite-magnet optimization (BAC) | Reduces system BOM cost by supporting lower-coercivity, higher-temperature-stable ferrite magnets instead of NdFeB or SmCo. |
| High-bandwidth programming ('5xx') | Delivers 12 µs tracking delay and 125 kHz Nyquist frequency - essential for high-speed FOC in traction inverters and servo drives. |
| Ratiometric analog outputs | Eliminates need for precision voltage references; angular accuracy remains stable across supply rail variations common in battery-fed systems. |
| Programmable via connector pins | Allows post-manufacture tuning of sensitivity, bandwidth, and magnetic axis without dedicated programming hardware or EEPROM interface. |
Applications
| Brushless Motor Rotor Position Sensing | Electric Power Steering (EPS) Angle Feedback |
|---|---|
|
Use Scenario: Real-time angular measurement of permanent magnet rotor in a 4-pole BLDC motor operating at 15,000 rpm in an industrial pump drive. IC Role / Device Role / Timing Role: Resolver IC providing synchronized sine/cosine analog outputs sampled by MCU ADC at 250 kSPS to compute electrical angle for commutation. Use Value: 4 µs update rate and ±1° compensated accuracy ensure <1% torque ripple at rated speed, meeting IEC 60034-30-2 efficiency Class IE4 requirements. |
Use Scenario: Contactless steering column angle detection in ASIL-B EPS module, exposed to under-hood thermal cycling (-40°C to 125°C ambient). IC Role / Device Role / Timing Role: Primary angular sensor delivering redundant-ready analog signals to safety MCU for assist-torque calculation and fault monitoring. Use Value: -40°C to 150°C operation and AEC-Q100-qualified SOIC-8 package enable single-sensor deployment without external thermal shielding or derating. |
| Permanent Magnet Synchronous Motor (PMSM) Field-Oriented Control | Industrial Servo Motor Commutation |
|
Use Scenario: High-dynamic-response PMSM in CNC spindle drive requiring <50 µs total loop latency from position capture to PWM update. IC Role / Device Role / Timing Role: High-bandwidth resolver feeding angle data to FPGA-based motion controller for vector control execution at 20 kHz update rate. Use Value: 12 µs tracking delay and ratiometric outputs reduce signal conditioning complexity, enabling direct ADC input without gain/offset calibration per unit. |
Use Scenario: Compact servo motor with integrated drive electronics where PCB space limits use of optical encoders or resolvers with external transformers. IC Role / Device Role / Timing Role: Monolithic angular sensor replacing bulky resolver + excitation transformer, mounted directly on motor rear shaft. Use Value: SOIC-8 footprint and end-of-shaft capability allow integration into <30 mm diameter motor housings while maintaining ±1° accuracy after dynamic compensation. |
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-520-RE | Uses NdFeB magnet (BAB) instead of ferrite (BAC); 50 mT range retained but with higher remanence and lower temperature coefficient (1100 ppm/°C vs. 2000 ppm/°C). | Better accuracy stability over temperature in high-precision servo applications; requires stronger magnet assembly. | Select BAB-520 for tighter angular error budgets where magnet cost is secondary to thermal performance. |
| MLX90380LGO-BAC-520-RE | Dual-die TSSOP-16 package with full redundancy; identical magnetic specs and programming but separate die A/B outputs and supply rails. | Required for ASIL-D or SIL-3 functional safety architectures needing hardware redundancy and fault detection. | Choose LGO-BAC-520 only when ISO 26262 ASIL-D or IEC 61508 SIL-3 compliance mandates dual-channel independent sensing. |
Compared with MLX90380LDC-BAC-520-SP, the BAB-520 offers superior thermal stability for precision motion control, while the LGO-BAC-520 adds hardware redundancy for safety-critical deployments - neither is pin-compatible, and both require PCB layout changes due to different packages and power routing.
Availability
MLX90380LDC-BAC-520-SP is available at Aetrix Electronics and suitable for brushless motor control, electric power steering systems, and industrial servo drives requiring stable component supply across automotive and industrial temperature grades.
Supply support for MLX90380LDC-BAC-520-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, infrared thermometry, and LIN/CAN communication interfaces.
The MLX90380 product line delivers contactless 360° angular position sensing using Triaxis® Hall technology, designed specifically for high-reliability motor control, steering, and transmission systems where robustness, temperature resilience, and analog signal integrity are critical.
FAQ
What magnetic axis configuration does MLX90380LDC-BAC-520-SP use?
MLX90380LDC-BAC-520-SP uses the X/Z magnetic axis configuration, where OUT1 corresponds to the BX (in-plane) component and OUT2 corresponds to the BZ (orthogonal) component. This is confirmed by the '5' in the third digit of the option code 'BAC-520', per Table 2 of the datasheet, and supports through-shaft mounting with two-pole off-axis magnets.
Does MLX90380LDC-BAC-520-SP support both 3.3 V and 5 V supply voltages simultaneously?
No, MLX90380LDC-BAC-520-SP supports either 3.3 V or 5 V operation - not both simultaneously. Pin 6 (VDD5V) and Pin 7 (VDD3V3) are separate supply inputs; only one may be powered at a time, with the other left floating, as specified in Section 9.1 and Figure 12–13 of the datasheet.
What is the full-scale magnetic range programmed in MLX90380LDC-BAC-520-SP?
MLX90380LDC-BAC-520-SP is factory-programmed for a 50 mT full-scale magnetic range, indicated by the '4' in the fourth digit of the option code 'BAC-520'. This matches the 'xx4' sensitivity setting defined in Table 2, intended for use with ferrite magnets and delivering ±40%VDD output swing at full scale.
Can MLX90380LDC-BAC-520-SP be reprogrammed in-system?
Yes, MLX90380LDC-BAC-520-SP supports in-system programming via its four application pins (VDD3V3, VDD5V, TEST, and GND), allowing field adjustment of sensitivity, bandwidth, and magnetic axis without dedicated programmers. Programming voltage threshold is 6.1–7.0 V on VDD during power-up, as specified in Table 7.
Is MLX90380LDC-BAC-520-SP qualified to AEC-Q100?
Yes, MLX90380LDC-BAC-520-SP is AEC-Q100 qualified for Grade 0 (-40°C to +150°C), as confirmed by its temperature code 'L' and listing in Table 1 of the datasheet. It meets stress testing requirements including HTOL, TC, and ESD (2 kV HBM for SOIC-8), making it suitable for automotive powertrain and chassis applications.
MLX90380LDC-BAC-520-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Triaxis®
- Packaging:
- Bulk
- 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-BAC-520-SP FAQ
1.How can I place an order for MLX90380LDC-BAC-520-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAC-520-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-BAC-520-SP reliable?
The price and inventory of MLX90380LDC-BAC-520-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-BAC-520-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAC-520-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAC-520-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAC-520-SP?
MLX90380LDC-BAC-520-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAC-520-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-BAC-520-SP?
For technical support, including MLX90380LDC-BAC-520-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAC-520-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAC-520-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAC-520-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-BAC-520-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAC-520-SP?
All MLX90380LDC-BAC-520-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAC-520-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-BAC-520-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAC-520-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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