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Melexis Technologies NV MLX90380LDC-BAB-145-SP
- Part No.:
- MLX90380LDC-BAB-145-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAB-145-SP.pdf
- Description:
- SENSOR RESOLVER ANLG GEN2 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,710
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Product details
Overview
MLX90380LDC-BAB-145-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 (14x), and high-bandwidth programming (x45) for end-of-shaft or through-shaft motor position sensing in automotive EPS and industrial servo drives.
For engineers reviewing the MLX90380LDC-BAB-145-SP datasheet, pinout, applications, or equivalent options, this page provides verified technical context, SOIC-8 package mapping, real-world angular error performance, magnetic axis behavior, and validated alternative options for resolver replacement in BLDC and PMSM control systems.
Technical Context
The MLX90380LDC-BAB-145-SP implements Triaxis® Hall technology to simultaneously sense orthogonal (X/Z) magnetic field components using on-die integrated Hall plates and signal conditioning. Its dual analog outputs (OUT1 = COS, OUT2 = SIN) are ratiometric to supply voltage and programmable via four application pins for sensitivity (60 mT full-scale range per BAB-145 coding) and filter bandwidth (high BW mode).
This variant is factory-programmed for X/Z magnetic axis (equal sensitivity), NdFeB magnet optimization, and high-bandwidth operation (4 µs update period, 125 kHz Nyquist frequency). It supports dynamic angular compensation and delivers ≤ ±1° total angular error with external correction, targeting high-reliability motor control where mechanical resolvers are impractical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Refresh Rate | 4 µs - Enables real-time position tracking up to 25,000 rpm with <12 µs total tracking delay in high-BW mode. |
| Operating Supply | 3.3 V or 5 V - Dual-rail support allows direct interface with 3.3 V MCUs or legacy 5 V systems without level shifting. |
| Full-Scale Magnetic Range | 60 mT - Factory-set sensitivity (BAB-145) optimized for NdFeB magnets in compact end-of-shaft configurations. |
| Magnetic Axis | X/Z - Outputs map BX to COS and BZ to SIN, enabling off-axis through-shaft mounting with two-pole magnets. |
| Temperature Range | −40 °C to +150 °C - Qualified for under-hood automotive and industrial motor drive environments without derating. |
| Total Angular Error | ≤ ±1° with dynamic compensation - Achievable using MCU-based offset/gain/phase correction prior to arctan(OUT2/OUT1). |
| Output Ratiometry | ±2.5% - Output voltages scale linearly with VDD, simplifying ADC reference design and reducing supply noise sensitivity. |
Pinout & Package
MLX90380LDC-BAB-145-SP is housed in an SOIC-8 package (JEDEC MS-012AC) with 1.27 mm pitch, 5.0 mm × 4.0 mm body, and exposed pad not connected internally. Pin 2 and Pin 4 are NC and must be tied to GND for optimal EMC performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Supply ground reference for all internal circuitry and analog outputs; must be low-impedance connection. |
| 2 | NC | No connect - externally grounded to reduce EMI coupling and improve noise immunity. |
| 3 | TEST | Factory test pin - grounded during normal operation to prevent parasitic oscillation and ensure stable startup. |
| 4 | NC | No connect - externally grounded to minimize capacitive coupling and maintain signal integrity. |
| 5 | OUT2 | Analog SIN output - ratiometric voltage proportional to BZ, used with OUT1 for arctangent angle calculation. |
| 6 | VDD5V | 5 V supply input - active when operating in 5 V mode; VDD3V3 must be left floating in this configuration. |
| 7 | VDD3V3 | 3.3 V supply input - active when operating in 3.3 V mode; VDD5V must be left floating in this configuration. |
| 8 | OUT1 | Analog COS output - ratiometric voltage proportional to BX, paired with OUT2 for absolute angular resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing | Simultaneous orthogonal (X/Z) field measurement eliminates need for external flux concentrators or multi-die assemblies. |
| Selectable Magnetic Axis | X/Z configuration enables mechanical flexibility: compatible with both end-of-shaft (two-pole) and through-shaft (multi-pole) magnet arrangements. |
| Programmable Sensitivity | 60 mT full-scale range (BAB-145) matched to NdFeB magnet strength, maximizing signal-to-noise ratio without external amplification. |
| Ratiometric Analog Outputs | OUT1/OUT2 scale directly with VDD, allowing use of same supply for sensor and ADC reference - reduces component count and layout complexity. |
| High-Speed Update | 4 µs output period supports closed-loop FOC at >20 kHz PWM frequencies with minimal phase lag in motor control loops. |
Applications
| Electric Power Steering (EPS) | Permanent Magnet Synchronous Motor (PMSM) |
|---|---|
|
Use Scenario: Real-time rotor position feedback for torque assist control in 12 V automotive steering columns. IC Role / Device Role / Timing Role: Contactless angular encoder replacing potentiometers; provides 360° absolute position at 25,000 rpm with <12 µs latency. Use Value: Eliminates mechanical wear and contact bounce, enabling ASIL-B compliant position sensing with <±1° dynamic error after MCU compensation. |
Use Scenario: Field-oriented control of industrial PMSM drives operating at ambient temperatures up to 125 °C. IC Role / Device Role / Timing Role: High-bandwidth resolver substitute delivering synchronized COS/SIN signals to motor control MCU ADC inputs. Use Value: Enables precise d-q axis current regulation without resolver-to-digital converter (RDC), reducing BOM cost and board space by >40%. |
| Brushless DC Motor (BLDC) | Industrial Servo Actuators |
|
Use Scenario: Six-step commutation timing in high-speed BLDC fans and pumps used in HVAC and industrial cooling systems. IC Role / Device Role / Timing Role: Absolute position sensor interfacing directly to 3.3 V microcontroller ADC channels with ratiometric scaling. Use Value: Delivers deterministic 4 µs sampling interval across −40 °C to +150 °C, ensuring consistent commutation timing without thermal recalibration. |
Use Scenario: Closed-loop position control in robotic joint actuators requiring fail-safe angular feedback under vibration and shock. IC Role / Device Role / Timing Role: Redundant-capable position sensor (SOIC-8 footprint supports future TSSOP-16 upgrade path) with end-of-shaft mounting. Use Value: Supports ISO 13849 PLd safety architecture via external diagnostics; achieves <±0.5° static linearity over 360° mechanical rotation. |
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-140-SP | Same SOIC-8 package and X/Z axis, but medium-bandwidth (3.3 V only, 2 µs update per field component). | Lower update rate (≥8 µs total) limits max speed to ~15,000 rpm; suitable for cost-sensitive BLDC fans. | Select when system bandwidth requirements are ≤15 kHz and 3.3 V supply is fixed. |
| MLX90380LGO-BAB-145-RE | TSSOP-16 dual-die redundant package; identical BAB-145 programming (60 mT, X/Z, high BW), but separate die A/B supplies and outputs. | Required for ASIL-D or SIL-3 functional safety systems needing hardware redundancy and fault detection. | Choose when IEC 61508 or ISO 26262 ASIL-D compliance mandates dual-channel independent sensing. |
Compared with MLX90380LDC-BAB-145-SP, the -140 variant trades update speed for lower power and simpler supply routing, while the LGO-BAB-145-RE adds physical redundancy at the cost of doubled PCB area and routing complexity - neither is pin-compatible, but both share identical magnetic calibration and software interface.
Availability
MLX90380LDC-BAB-145-SP is available at Aetrix Electronics and suitable for electric power steering, industrial PMSM drives, and high-reliability BLDC motor control requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MLX90380LDC-BAB-145-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 and embedded signal processing.
The MLX90380 product line delivers contactless absolute angular position sensing using Triaxis® Hall technology, designed specifically for high-temperature, high-reliability motor control and steering systems where resolver replacement is required.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAB-145-SP?
The MLX90380LDC-BAB-145-SP is factory-programmed for X/Z magnetic axis with equal sensitivity, meaning OUT1 responds to BX (COS) and OUT2 to BZ (SIN). This configuration supports through-shaft multi-pole magnet mounting and is confirmed by the '145' option code (x4x = X/Z, x45 = high BW + 60 mT range). The datasheet Figure 7 and Table 2 explicitly define this mapping for BAB-145.
Does MLX90380LDC-BAB-145-SP support both 3.3 V and 5 V operation?
Yes, MLX90380LDC-BAB-145-SP supports dual-supply operation: it can be powered from either VDD3V3 (3.135–3.6 V) or VDD5V (4.5–5.5 V), but not both simultaneously. When using 5 V, VDD3V3 must be left floating; when using 3.3 V, VDD5V must be left floating. This is specified in Section 9.1 (Pin Definitions) and Section 11 (Electrical Specifications) of the datasheet.
What is the total angular accuracy of MLX90380LDC-BAB-145-SP in a real system?
MLX90380LDC-BAB-145-SP achieves ≤ ±1° total angular error when dynamic compensation (offset, gain, and phase correction) is applied in the host MCU before arctan(OUT2/OUT1) computation. Without correction, error is ≤ ±15° over −40 °C to +150 °C. This performance is documented in Table 8 (Magnetic Specifications) and Section 12.2.2 of the datasheet.
Can MLX90380LDC-BAB-145-SP be used with ferrite or SmCo magnets?
No - MLX90380LDC-BAB-145-SP is specifically calibrated for NdFeB magnets, as indicated by the 'BAB' prefix in its ordering code. 'BAA' denotes SmCo, 'BAC' denotes ferrite. Using a non-matched magnet type degrades sensitivity accuracy and temperature stability; the datasheet Table 2 and Section 12.1 confirm magnet-specific TCS programming.
Is MLX90380LDC-BAB-145-SP pin-compatible with other MLX90380 variants in SOIC-8?
Yes - all SOIC-8 variants including MLX90380LDC-BAB-145-SP share identical pinout (Table 4), package dimensions (Section 14.1), and footprint. Differences are purely functional (sensitivity, axis, bandwidth) and programmed at factory; no PCB redesign is needed when migrating between SOIC-8 options like BAB-140 or BAB-143.
MLX90380LDC-BAB-145-SP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 8-SOIC
MLX90380LDC-BAB-145-SP FAQ
1.How can I place an order for MLX90380LDC-BAB-145-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAB-145-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-BAB-145-SP reliable?
The price and inventory of MLX90380LDC-BAB-145-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-BAB-145-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAB-145-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAB-145-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAB-145-SP?
MLX90380LDC-BAB-145-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAB-145-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-BAB-145-SP?
For technical support, including MLX90380LDC-BAB-145-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAB-145-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAB-145-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAB-145-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-BAB-145-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAB-145-SP?
All MLX90380LDC-BAB-145-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAB-145-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-BAB-145-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAB-145-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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