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Melexis Technologies NV MLX90380LGO-BAB-125-SP
- Part No.:
- MLX90380LGO-BAB-125-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MLX90380LGO-BAB-125-SP.pdf
- Description:
- SENSOR RESOLVER ANLG 2CH 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,866
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Product details
Overview
MLX90380LGO-BAB-125-SP from Melexis is a Triaxis® monolithic contactless rotary position sensor IC delivering true 360° sine/cosine analog outputs with 4 µs output refresh rate, 3.3 V/5 V dual-supply support, and operation from −40 °C to +150 °C. It uses NdFeB magnet compatibility (BAB), X/Z magnetic axis configuration (12x), and high-bandwidth programming (x25) for end-of-shaft or through-shaft motor position sensing in automotive EPS and industrial servo drives.
For engineers reviewing the MLX90380LGO-BAB-125-SP datasheet, pinout, applications, or equivalent options, this TSSOP-16 dual-die redundant resolver IC provides ratiometric analog outputs, programmable sensitivity (60 mT full-scale range), and dynamic angular error compensation down to ±1° - critical for field-oriented control in BLDC and PMSM systems requiring functional safety compliance.
Technical Context
The MLX90380LGO-BAB-125-SP implements Triaxis® Hall technology with orthogonal and in-plane magnetic field sensing, enabling simultaneous measurement of two orthogonal flux components (e.g., BX and BZ) to generate precise sine/cosine waveforms. Its dual-die TSSOP-16 architecture supports full redundancy for ASIL-D–capable systems.
Programmable via four application pins, it supports selectable magnetic axes (X/Z), sensitivity ranges (10–70 mT), and filter bandwidths (low/medium/high). The x25 option code confirms high-bandwidth mode (125 kHz Nyquist frequency, 12 µs tracking delay), optimized for >25,000 rpm rotor speeds and real-time angle computation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - enables 250 kSPS sampling for high-speed motor commutation |
| Operating Supply Voltage | 3.3 V or 5 V - dual-rail support allows direct interface with 3.3 V MCU ADCs or 5 V industrial controllers |
| Full-Scale Magnetic Range | 60 mT - factory-programmed (BAB-125) for NdFeB magnets, matching typical surface-mounted rotor fields |
| Angular Accuracy (Dynamic) | ±1° - achieved with off-chip offset/gain/phase correction applied before arctan(OUT2/OUT1) |
| Operating Temperature | −40 °C to +150 °C - qualified for under-hood automotive and industrial motor drive environments |
| Nyquist Frequency | 125 kHz - supports accurate position capture at up to 25,000 rpm with 1.6 samples/degree resolution |
| Package | TSSOP-16 - dual-die fully redundant layout meets ISO 26262 hardware fault tolerance requirements |
Pinout & Package
TSSOP-16 package with exposed thermal pad; dual-die structure provides independent signal paths for Die A and Die B, supporting functional safety architectures requiring redundancy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9 | VSS_A / VSS_B | Separate ground returns per die - enables independent noise rejection and fault isolation |
| 5, 13 | OUT2_B / OUT2_A | Sine analog outputs - ratiometric to respective VDD rail, used for arctan-based angle calculation |
| 8, 16 | OUT1_B / OUT1_A | Cosine analog outputs - paired with OUT2 for quadrature position decoding |
| 6, 14 | VDD5V_B / VDD5V_A | 5 V supply inputs - used when operating in 5 V mode; VDD3V3 pins must be left floating |
| 7, 15 | VDD3V3_B / VDD3V3_A | 3.3 V supply inputs - used when operating in 3.3 V mode; VDD5V pins must be left floating |
| 4, 11 | TEST_A / TEST_B | Factory test pins - connected to GND for optimal EMC; not user-accessible in normal operation |
| 2, 3, 10, 12 | NC | No-connect pins - internally unused; recommended to tie to GND for EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (BZ) and in-plane (BX) field detection enables robust X/Z-axis operation without mechanical alignment constraints |
| Ratiometric Analog Outputs | OUT1/OUT2 scale linearly with VDD - eliminates need for precision voltage references in MCU ADC front-end design |
| Programmable Bandwidth | High-bandwidth mode (x25) delivers 12 µs tracking delay - essential for fast-accelerating motors and real-time torque control loops |
| Dual-Die Redundancy | Independent Die A and Die B in single TSSOP-16 package - supports cross-checking and fault detection per ISO 26262 ASIL D decomposition |
| End-of-Shaft / Through-Shaft Flexibility | X/Z magnetic axis selection (BAB-12x) accommodates both on-axis and off-axis magnet placements in compact motor assemblies |
Applications
| Electric Power Steering (EPS) | Industrial Servo Drives |
|---|---|
Use Scenario: Real-time rotor position feedback for brushless DC motor in column-assist EPS system exposed to under-hood temperatures up to 150 °C. IC Role / Device Role / Timing Role: Contactless absolute angle sensor providing synchronized sine/cosine outputs to MCU for FOC-based torque generation. Use Value: ±1° dynamic angular accuracy and dual-die redundancy enable ASIL-C compliance and elimination of mechanical wear vs. potentiometers. |
Use Scenario: High-speed position sensing in closed-loop PMSM servo amplifier for CNC machine tool spindle control. IC Role / Device Role / Timing Role: Resolver replacement delivering 4 µs update rate and 125 kHz Nyquist bandwidth for 25,000 rpm operation. Use Value: 60 mT full-scale range matches NdFeB rotor flux density; ratiometric outputs simplify 12-bit ADC interfacing without external reference. |
| Automotive Traction Inverters | Robot Joint Actuators |
Use Scenario: Rotor position acquisition in inverter-fed traction motor for battery electric vehicle (BEV), operating across −40 °C cold start to 150 °C peak load. IC Role / Device Role / Timing Role: Functional safety–ready angular sensor feeding dual-core lockstep MCU with redundant analog channels. Use Value: TSSOP-16 dual-die architecture enables hardware-level fault detection; X/Z axis config supports compact axial-flux motor integration. |
Use Scenario: Compact joint-angle measurement in collaborative robot (cobots) where space-constrained hollow-shaft motor design requires through-shaft mounting. IC Role / Device Role / Timing Role: Absolute position transducer with programmable sensitivity and magnetic axis for off-axis magnet placement. Use Value: BAB-125 option provides 60 mT range and high-bandwidth response (12 µs delay) for <100 µs motion control loop closure. |
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 |
|---|---|---|---|
| MLX90380LGO-BAB-100-RE | Same TSSOP-16 package and NdFeB magnet support, but medium-bandwidth (x10) mode - 29.5 µs tracking delay, 62.5 kHz Nyquist | Lower update rate limits use in >15,000 rpm applications; suitable for cost-sensitive EPS variants with relaxed loop timing | Select when system bandwidth requirement is ≤62.5 kHz and ASIL-D redundancy remains mandatory |
| MLX90380LDC-BAB-125-RE | SOIC-8 single-die variant with identical BAB-125 option (60 mT, X/Z, high BW), but no hardware redundancy | Lacks dual-die fault tolerance - limited to ASIL-B systems or non-safety-critical industrial encoders | Choose for space-constrained PCB layouts where redundancy is not required and TSSOP-16 footprint is prohibitive |
Compared with MLX90380LGO-BAB-125-RE, the -100-RE trades bandwidth for lower latency jitter in medium-speed systems, while the SOIC-8 -125-RE retains identical magnetic performance but removes hardware-level fault coverage - making the TSSOP-16 dual-die version uniquely suited for ASIL-D motor control where both accuracy and redundancy are non-negotiable.
Availability
MLX90380LGO-BAB-125-SP is available at Aetrix Electronics and suitable for electric power steering, industrial servo drives, and automotive traction inverters requiring stable component supply across extended temperature and high-reliability operational life cycles.
Supply support for MLX90380LGO-BAB-125-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, thermal imaging, and RF solutions.
The MLX90380 product line delivers Triaxis® contactless angular position sensing for functional safety–critical motor control, designed specifically for ASIL-D–compliant EPS, traction inverters, and robotics where reliability, accuracy, and redundancy are mandatory.
FAQ
What does the "125" in MLX90380LGO-BAB-125-SP signify?
The "125" in MLX90380LGO-BAB-125-SP is the option code specifying three key factory-programmed attributes: (1) NdFeB magnet compatibility (BAB), (2) X/Z magnetic axis configuration (12x), and (3) high-bandwidth mode (x25), which sets the Nyquist frequency to 125 kHz and tracking delay to 12 µs. This configuration is validated in the MLX90380 datasheet Revision 11 for TSSOP-16 packaging and ensures optimal performance with neodymium magnets in high-speed motor applications.
How does MLX90380LGO-BAB-125-SP achieve ±1° dynamic angular accuracy?
MLX90380LGO-BAB-125-SP achieves ±1° dynamic angular accuracy through on-chip high-speed sine/cosine generation combined with off-chip dynamic compensation algorithms - specifically offset, gain, and phase correction applied to OUT1 and OUT2 prior to arctan(OUT2/OUT1) computation. This correction compensates for magnetic system non-idealities (e.g., magnet eccentricity) and temperature-induced drift, as confirmed in Table 8 of the datasheet under "Total Angular Error with Dynamic Compensation."
Can MLX90380LGO-BAB-125-SP operate with both 3.3 V and 5 V supplies simultaneously?
No - MLX90380LGO-BAB-125-SP must be operated with either 3.3 V or 5 V, not both simultaneously. When using 3.3 V, VDD3V3_A/B pins are powered and VDD5V_A/B must be left floating; when using 5 V, VDD5V_A/B are powered and VDD3V3_A/B must be left floating. This requirement is explicitly stated in Section 9.2 of the datasheet and enforced by internal power-on reset thresholds (VPOR_H/V_POR_L).
What is the purpose of the dual-die architecture in MLX90380LGO-BAB-125-SP?
The dual-die architecture in MLX90380LGO-BAB-125-SP provides hardware-level redundancy: Die A and Die B operate independently with separate power, ground, and analog output pins (OUT1_A/OUT2_A and OUT1_B/OUT2_B). This enables cross-comparison, fault detection, and fail-safe behavior required for ISO 26262 ASIL-D systems - a capability absent in single-die SOIC-8 variants like MLX90380LDC-BAB-125-RE.
Is MLX90380LGO-BAB-125-SP pin-compatible with other MLX90380 variants in TSSOP-16?
Yes - all MLX90380 devices in TSSOP-16 (e.g., LGO-BAA-xxx, LGO-BAB-xxx, LGO-BAC-xxx) share identical pinout, package dimensions, and thermal pad layout per Sections 14.4–14.6 of the datasheet. The only differences are factory-programmed parameters (magnet type, sensitivity, axis, bandwidth), meaning PCB design and layout can be reused across the entire TSSOP-16 family without modification.
MLX90380LGO-BAB-125-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 16-TSSOP (0.173", 4.40mm 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:
- 16-TSSOP
MLX90380LGO-BAB-125-SP FAQ
1.How can I place an order for MLX90380LGO-BAB-125-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LGO-BAB-125-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 MLX90380LGO-BAB-125-SP reliable?
The price and inventory of MLX90380LGO-BAB-125-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90380LGO-BAB-125-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LGO-BAB-125-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LGO-BAB-125-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LGO-BAB-125-SP?
MLX90380LGO-BAB-125-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LGO-BAB-125-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 MLX90380LGO-BAB-125-SP?
For technical support, including MLX90380LGO-BAB-125-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LGO-BAB-125-SP requirements.
6.How does Aetrix verify that MLX90380LGO-BAB-125-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LGO-BAB-125-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 MLX90380LGO-BAB-125-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LGO-BAB-125-SP?
All MLX90380LGO-BAB-125-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LGO-BAB-125-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 MLX90380LGO-BAB-125-SP part is unused and in its original packaging.
Return procedure for MLX90380LGO-BAB-125-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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