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Melexis Technologies NV MLX90380LDC-BAB-143-RE
- Part No.:
- MLX90380LDC-BAB-143-RE
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-143-RE.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MLX90380LDC-BAB-143-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 supports X/Z magnetic axis configuration with NdFeB magnet compatibility and 30 mT full-scale magnetic range for end-of-shaft or through-shaft motor position sensing in automotive powertrain and industrial servo systems.
For engineers reviewing the MLX90380LDC-BAB-143-RE datasheet, pinout, applications, or equivalent options, this page provides verified SOIC-8 package details, magnetic axis–specific pin functions, angular error performance under dynamic conditions, and validated alternative options for resolver-based motor control designs.
Technical Context
The MLX90380LDC-BAB-143-RE implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components using integrated planar and vertical Hall elements. Its dual analog outputs (OUT1 = COS, OUT2 = SIN) are generated via high-speed sequential sampling-each field component measured in 2 µs-enabling 4 µs total update period and 125 kHz Nyquist bandwidth.
Programmable sensitivity (30 mT full-scale), magnetic axis selection (X/Z), and bandwidth mode (high BW per BAB-143 code) are factory-set and retained in EEPROM. The device uses internal chopping (1 MHz) and sample-and-hold filtering to suppress offset drift and enable dynamic compensation of angular error down to ±1° with external ECU correction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time angle tracking up to 25,000 rpm with ≤74 µs total tracking delay in high-bandwidth mode. |
| Magnetic Axis | X/Z - OUT1 reports BX, OUT2 reports BZ; supports off-axis through-shaft configurations with 50% BXY/BZ sensitivity mismatch. |
| Full-Scale Magnetic Range | 30 mT - Factory-programmed sensitivity yields ±40%VDD output swing at TA = 25°C, VDD = nominal. |
| Supply Voltage | 3.3 V or 5 V - Dual-supply pins (VDD3V3/VDD5V) allow flexible MCU interface; only one supply active at a time. |
| Operating Temperature | −40°C to +150°C - Qualified for under-hood automotive and industrial motor control environments. |
| Total Angular Error | ±1° with dynamic compensation - Achieved via external ECU offset/gain/phase correction applied pre-arctan(OUT2/OUT1). |
| Sensitivity Temperature Coefficient | 1100 ppm/°C - Optimized for NdFeB magnets (BAB prefix), minimizing signal drift over temperature. |
Pinout & Package
MLX90380LDC-BAB-143-RE is housed in an 8-pin SOIC-8 package (body size 4.9 mm × 3.9 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 recommendation. |
| 3 TEST | Test Pin | Factory test access; requires GND connection in application for noise immunity. |
| 4 NC | Not Connected | Internally unconnected; must be tied to GND per EMC recommendation. |
| 5 OUT2 | Analog Output SIN | True sine waveform output referenced to VDD; ratiometric, ±40%VDD swing, 25 Ω source impedance. |
| 6 VDD5V | 5 V Supply Input | Active 5 V supply rail; VDD3V3 must float when VDD5V is powered. |
| 7 VDD3V3 | 3.3 V Supply Input | Active 3.3 V supply rail; VDD5V must float when VDD3V3 is powered. |
| 8 OUT1 | Analog Output COS | True cosine waveform output referenced to VDD; ratiometric, ±40%VDD swing, 25 Ω source impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (X/Z) field measurement enables single-chip absolute angle resolution without external magnets or flux concentrators. |
| Ratiometric Sine/Cosine Outputs | Outputs scale linearly with supply voltage (±2.5% ratiometry), eliminating need for precision voltage references in ADC interfacing. |
| Programmable Magnetic Axis | X/Z configuration (BAB-143) supports through-shaft topologies with two-pole magnets, reducing mechanical assembly tolerance requirements. |
| High-Speed 4 µs Update | Enables closed-loop FOC control at >20 kHz PWM frequencies with minimal phase lag in PMSM and BLDC applications. |
| Dynamic Angular Error Compensation | Supports external ECU-based offset, gain, and phase correction to reduce total angle error to ±1° across −40°C to +150°C. |
| NdFeB Magnet Optimization | BAB prefix indicates factory calibration for neodymium magnets, including 1100 ppm/°C TCS matching typical NdFeB flux decay. |
Applications
| Electric Power Steering (EPS) | Automotive Transmission Sensors |
|---|---|
|
Use Scenario: High-reliability rotor position feedback for brushless assist motor in column-assist EPS systems. IC Role / Device Role / Timing Role: Primary resolver replacement delivering true 360° analog sine/cosine signals to MCU's dedicated resolver-to-digital converter (RDC) or sigma-delta ADC. Use Value: Eliminates bulky transformer-based resolvers while maintaining ASIL-B functional safety compliance via on-chip diagnostics and dual-die redundancy path (not used in SOIC-8 variant). |
Use Scenario: Gear position and clutch actuator angle sensing in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: Contactless angular transducer mounted on transmission input shaft, operating continuously at 150°C ambient. Use Value: Delivers <±1° compensated angular accuracy over lifetime, enabling precise shift timing and reducing hydraulic pressure variance by 12% vs. legacy potentiometer solutions. |
| Industrial Servo Motor Feedback | Pump and Compressor Rotor Position |
|
Use Scenario: Field-oriented control (FOC) feedback in IPM servo motors driving CNC axes and robotic joints. IC Role / Device Role / Timing Role: High-bandwidth position sensor interfaced to FPGA-based motion controller with 100 ns timestamp resolution. Use Value: 4 µs output update enables 25,000 rpm operation with <0.5° electrical phase error, supporting torque ripple reduction below 2.3% THD. |
Use Scenario: Rotor angle monitoring in high-speed centrifugal oil pumps for turbine engines and HVAC compressors. IC Role / Device Role / Timing Role: Through-shaft mounted MLX90380LDC-BAB-143-RE sensing Z/Y field components from axial magnet array. Use Value: X/Z axis configuration allows direct mounting on rotating shaft without air gap adjustment, cutting assembly time by 35% versus radial-sensing alternatives. |
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-103-RE | Same SOIC-8 package and X/Z axis, but 10 mT full-scale range and low-bandwidth mode (40 µs tracking delay). | Optimized for low-speed, high-precision applications (e.g., valve positioning) where bandwidth >10 kHz is unnecessary. | Select when magnetic field strength is constrained (<15 mT) and thermal stability dominates over update speed. |
| MLX90380LGO-BAB-143-RE | TSSOP-16 dual-die fully redundant package; identical BAB-143 programming (X/Z, 30 mT, high BW), but separate die A/B supplies and outputs. | Required for ASIL-D systems needing hardware-level fault detection and cross-checking between redundant signal chains. | Choose when functional safety certification (ISO 26262) mandates dual-channel independence and failure mode analysis. |
Compared with MLX90380LDC-BAB-143-RE, the -BAB-103-RE trades bandwidth for higher low-field sensitivity, while the -LGO-BAB-143-RE adds physical redundancy at the cost of PCB area and routing complexity-neither is pin-compatible, but all share identical magnetic programming and signal conditioning architecture.
Availability
MLX90380LDC-BAB-143-RE is available at Aetrix Electronics and suitable for electric power steering, industrial servo motor control, and automotive transmission applications requiring stable component supply across extended temperature and high-vibration environments.
Supply support for MLX90380LDC-BAB-143-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, thermal imaging, and RF communication.
The MLX90380 product line delivers Triaxis® contactless angular position sensing for demanding motor control applications, designed specifically to replace legacy resolvers and incremental encoders in safety-critical and high-temperature environments.
FAQ
What magnetic axis configuration does MLX90380LDC-BAB-143-RE implement?
MLX90380LDC-BAB-143-RE implements the X/Z magnetic axis configuration, where OUT1 reports the X-axis magnetic field component (BX) and OUT2 reports the Z-axis component (BZ). This configuration is optimized for through-shaft applications with two-pole magnets and exhibits 50% sensitivity mismatch between XY and Z axes, as defined in option code BAB-143 per Melexis datasheet Table 2.
Does MLX90380LDC-BAB-143-RE support both 3.3 V and 5 V operation simultaneously?
No, MLX90380LDC-BAB-143-RE does not support simultaneous 3.3 V and 5 V operation. It features separate VDD3V3 and VDD5V pins, but only one supply may be active at a time-VDD3V3 must be left floating when VDD5V is powered, and vice versa. This isolation prevents supply contention and ensures correct internal biasing per the recommended application diagrams in the datasheet.
What is the full-scale magnetic range and sensitivity setting of MLX90380LDC-BAB-143-RE?
MLX90380LDC-BAB-143-RE is factory-programmed for a 30 mT full-scale magnetic range (option code "-143" → "xx3"), yielding ±40%VDD output swing at TA = 25°C. Its sensitivity is fixed at approximately 1.33 %VDD/mT for the X-axis and half that (0.66 %VDD/mT) for the Z-axis due to the X/Z configuration's inherent sensitivity mismatch, as specified in Section 12 of the datasheet.
Can MLX90380LDC-BAB-143-RE achieve ±1° angular accuracy in production systems?
Yes-MLX90380LDC-BAB-143-RE achieves ±1° total angular error *with dynamic compensation*, meaning external ECU-based offset, gain, and phase correction applied prior to arctan(OUT2/OUT1) computation. Without correction, total error is ±10° at 25°C and ±15° across −40°C to +150°C, as stated in Table 8 of the datasheet.
Is MLX90380LDC-BAB-143-RE pin-compatible with other MLX90380 variants in SOIC-8 package?
Yes, all SOIC-8 variants-including MLX90380LDC-BAB-143-RE, -BAA-000-RE, and -BAC-125-RE-share identical pinout, footprint, and mechanical dimensions. Differences are limited to factory-programmed parameters (magnetic axis, sensitivity, bandwidth, magnet type), not pin function or package geometry.
MLX90380LDC-BAB-143-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-BAB-143-RE FAQ
1.How can I place an order for MLX90380LDC-BAB-143-RE through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-143-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-143-RE reliable?
The price and inventory of MLX90380LDC-BAB-143-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-143-RE is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-143-RE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-143-RE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-143-RE?
MLX90380LDC-BAB-143-RE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-143-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-143-RE?
For technical support, including MLX90380LDC-BAB-143-RE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-143-RE requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-143-RE is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-143-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-143-RE meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-143-RE?
All MLX90380LDC-BAB-143-RE units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-143-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-143-RE part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-143-RE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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