My Inquiry
My Account
Melexis Technologies NV MLX90380LDC-BAC-545-SP
- Part No.:
- MLX90380LDC-BAC-545-SP
- Manufacturer:
- Melexis Technologies NV
- Category:
- Angle, Linear Position Measuring
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MLX90380LDC-BAC-545-SP.pdf
- Description:
- TRIAXIS HI-SPEED RESOLVER FEAT.
- Quantity:
- Payment:
- Shipping:
Inventory:1,867
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MLX90380LDC-BAC-545-SP from Melexis is a monolithic Triaxis® resolver IC delivering true 360° contactless angular position sensing via ratiometric sine/cosine analog outputs. It operates from 3.3V or 5V supply, supports -40°C to 150°C ambient, features 4 µs output refresh rate, and is factory-programmed for Ferrite magnet use with X/Z magnetic axis configuration and high-bandwidth (5xx) operation at 5V. It serves as the core position feedback element in brushless motor control systems requiring robustness under extreme thermal and EMI conditions.
For engineers reviewing the MLX90380LDC-BAC-545-SP datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SOIC-8 package details, magnetic axis selection impact, sensitivity calibration behavior, and real-world motor control integration constraints - all grounded in Revision 11 (June 2021) official specifications.
Technical Context
The MLX90380LDC-BAC-545-SP implements Triaxis® Hall technology to simultaneously measure 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 VDD and internally processed with programmable sample-and-hold filtering.
This variant is preconfigured for 5V operation (VDD5V active, VDD3V3 floating), X/Z magnetic axis (COS on X, SIN on Z), Ferrite magnet compatibility (BAC prefix), and high-bandwidth mode (5xx suffix), yielding 70 mT full-scale range, 0.57 %VDD/mT sensitivity, and 12 µs tracking delay at 25000 rpm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 5 V nominal; VDD3V3 must be left floating - enables higher SNR and full 70 mT range with Ferrite magnets |
| Output Refresh Rate | 4 µs per field component (8 µs total for synchronized SIN/COS pair) - supports >25,000 rpm rotor speed without aliasing |
| Magnetic Axis | X/Z configuration - OUT1 tracks BX, OUT2 tracks BZ; requires off-axis or through-shaft magnet placement |
| Full-Scale Range | 70 mT - maximum in-plane flux density producing ±40% VDD swing; optimized for cost-effective Ferrite magnets |
| Operating Temperature | -40°C to +150°C - qualified for under-hood automotive and industrial motor drive environments |
| Angular Accuracy | ±1° total error with dynamic compensation - achievable only when external MCU applies offset/gain correction to raw SIN/COS outputs |
| Bandwidth Mode | High bandwidth (5xx) - sets filter coefficient n=1, enabling fastest response and minimal phase lag (12 µs tracking delay) |
Pinout & Package
MLX90380LDC-BAC-545-SP uses the SOIC-8 RoHS-compliant surface-mount package (5.3 mm × 6.2 mm × 1.75 mm body height), designed for reflow soldering and high-vibration mechanical environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VSS | Supply Ground | Primary ground reference for analog and digital blocks; must be low-impedance connection to system GND plane |
| 2 - NC | Not Connected | Internally unconnected; recommended to tie to GND for EMC improvement |
| 3 - TEST | Test Pin | Factory test access; tie to GND for optimal EMC performance in production layout |
| 4 - NC | Not Connected | Internally unconnected; recommended to tie to GND for EMC improvement |
| 5 - OUT2 | Analog Output SIN | Ratiometric voltage proportional to BZ; drives ADC input directly with ≤10 kΩ load and ≤10 nF capacitance |
| 6 - VDD5V | 5V Supply Input | Active power rail for this variant; VDD3V3 must remain floating to avoid conflict and ensure correct biasing |
| 7 - VDD3V3 | 3.3V Supply Input | Must be left floating - energizing it disables 5V-mode operation and invalidates programmed functionality |
| 8 - OUT1 | Analog Output COS | Ratiometric voltage proportional to BX; paired with OUT2 to reconstruct absolute angle via arctan(OUT2/OUT1) |
Key Features
| Feature | Design Value |
|---|---|
| Triaxis® Hall Sensing Architecture | Simultaneous orthogonal (X/Z) field measurement eliminates need for external flux concentrators or multi-die assemblies |
| Programmable Magnetic Axis | X/Z selection enables mechanical flexibility for through-shaft motor topologies without redesigning magnet mounting |
| Ratiometric Analog Outputs | OUT1/OUT2 scale linearly with VDD, removing supply voltage drift from angle computation in MCU-based arctan processing |
| Ferrite Magnet Optimization | BAC option code configures sensitivity (0.57 %VDD/mT) and temperature compensation for low-cost, high-temp-stable Ferrite magnets |
| High-Bandwidth Mode (5xx) | Minimizes tracking delay to 12 µs - critical for field-oriented control (FOC) loops operating above 10 kHz PWM frequencies |
Applications
| Brushless DC Motor (BLDC) Rotor Position Feedback | Permanent Magnet Synchronous Motor (PMSM) Commutation |
|---|---|
Use Scenario: Integrated into the stator assembly of an automotive HVAC blower motor to provide real-time rotor angle for six-step commutation. IC Role / Device Role / Timing Role: Delivers synchronized COS/SIN analog outputs sampled by MCU ADC at 250 kSPS to compute 360° electrical angle with <1° error after dynamic compensation. Use Value: Enables smooth torque delivery and acoustic noise reduction at 12,000 rpm while surviving under-hood temperatures up to 150°C. | Use Scenario: Mounted on the end-of-shaft of an electric power steering (EPS) motor to feed angle data into a 32-bit ARM Cortex-M7 FOC algorithm. IC Role / Device Role / Timing Role: Acts as primary position transducer; its 4 µs update rate ensures sub-microsecond latency between magnetic rotation and usable angle data for current loop timing. Use Value: Supports 20 kHz PWM switching with <5 µs total sensor-to-PWM delay, meeting ISO 26262 ASIL-B timing requirements. |
| Field-Oriented Control (FOC) Angle Estimation | Industrial Servo Motor Position Loop |
Use Scenario: Used in a robotic joint actuator where precise torque vectoring demands continuous angle reconstruction from raw SIN/COS pairs. IC Role / Device Role / Timing Role: Provides differential analog outputs to a dual-channel sigma-delta ADC; angle computed via CORDIC or lookup-table arctan with gain/offset correction applied in real time. Use Value: Achieves ±0.5° linearity over full 360° rotation after calibration - sufficient for <0.1% torque ripple in precision motion control. | Use Scenario: Embedded in a CNC spindle drive to replace optical encoders in oil-contaminated machine tool environments. IC Role / Device Role / Timing Role: Functions as ruggedized absolute position sensor; X/Z axis configuration accommodates compact through-shaft magnet design within sealed motor housing. Use Value: Eliminates encoder glass fragility and bearing contamination issues while maintaining 12-bit effective resolution via oversampling and digital post-processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar resolver sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90380LDC-BAB-545-RE | Uses NdFeB magnet calibration (higher sensitivity: 2.66 %VDD/mT) instead of Ferrite; same X/Z axis and 5V high-bandwidth mode | Requires stronger, more expensive NdFeB magnet; better SNR but reduced thermal stability above 125°C | Select when magnet strength and signal margin outweigh cost and high-temp stability requirements |
| MLX90380LGO-BAC-545-RE | Dual-die TSSOP-16 package with full redundancy; identical Ferrite/X/Z/5V/high-BW programming but duplicated signal chain | Supports ASIL-D functional safety architectures via cross-die comparison; occupies larger PCB area and draws ~2× supply current | Select when ISO 26262 ASIL-D compliance or fault-tolerant position reporting is mandatory |
Compared with MLX90380LDC-BAB-545-RE, this MLX90380LDC-BAC-545-SP trades sensitivity for Ferrite magnet compatibility and extended high-temp stability; compared with MLX90380LGO-BAC-545-RE, it provides identical sensing performance in a smaller, lower-cost, single-die SOIC-8 form factor without redundancy overhead.
Availability
MLX90380LDC-BAC-545-SP is available at Aetrix Electronics and suitable for automotive BLDC motor control, industrial servo positioning, and electric power steering systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90380LDC-BAC-545-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 sensor solutions for automotive and industrial markets, with expertise in magnetic sensing, infrared thermometry, and automotive ASICs.
The MLX90380 product line delivers contactless 360° absolute angular position sensing using Triaxis® Hall technology, targeting high-reliability motor control, steering, and transmission applications where optical or potentiometric sensors fail.
FAQ
What is the magnetic axis configuration of MLX90380LDC-BAC-545-SP?
The MLX90380LDC-BAC-545-SP is factory-programmed for X/Z magnetic axis operation, meaning OUT1 (pin 8) outputs a COS signal proportional to the X-axis magnetic field component (BX) and OUT2 (pin 5) outputs a SIN signal proportional to the Z-axis component (BZ). This configuration supports through-shaft magnet arrangements and requires mechanical alignment per Figure 7 in the datasheet. The BAC-545 option code explicitly defines this axis selection.
Can MLX90380LDC-BAC-545-SP operate from a 3.3V supply?
No - MLX90380LDC-BAC-545-SP is configured for 5V-only operation (indicated by the "5" in the "545" option code suffix). Its VDD3V3 pin (pin 7) must remain floating; applying 3.3V to that pin will disrupt internal biasing and invalidate the high-bandwidth, Ferrite-optimized calibration. Only variants ending in "4xx" or "2xx" support 3.3V supply.
What is the full-scale magnetic range of MLX90380LDC-BAC-545-SP?
The MLX90380LDC-BAC-545-SP has a full-scale magnetic range of 70 mT, corresponding to the "6" in the "545" option code (per Table 2: BAx-xx6 = 70 mT range). At this range, a ±70 mT in-plane flux density produces a ±40% VDD output swing around the 50% VDD quiescent level, enabling optimal utilization of a 5V ADC's input range when paired with Ferrite magnets.
How does the high-bandwidth mode affect timing in MLX90380LDC-BAC-545-SP?
The "5" in the "545" option code selects high-bandwidth mode, setting the internal filter coefficient n=1 and reducing tracking delay to 12 µs (per Table 7 footnote 9). This minimizes phase lag between physical rotor movement and SIN/COS output updates, supporting closed-loop FOC execution at PWM frequencies up to 20 kHz without angle estimation instability.
Is MLX90380LDC-BAC-545-SP pin-compatible with other MLX90380 variants in SOIC-8?
Yes - all SOIC-8 variants including MLX90380LDC-BAC-545-SP share identical pinout (Table 4), footprint, and thermal characteristics. However, electrical behavior differs significantly: supply voltage mode (3.3V vs. 5V), magnetic axis (X/Y, X/Z, Z/Y), sensitivity range (10–70 mT), and bandwidth (low/medium/high) are all factory-programmed and non-interchangeable without system-level recalibration.
MLX90380LDC-BAC-545-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:
- Gull Wing
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MLX90380LDC-BAC-545-SP FAQ
1.How can I place an order for MLX90380LDC-BAC-545-SP through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90380LDC-BAC-545-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-545-SP reliable?
The price and inventory of MLX90380LDC-BAC-545-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-545-SP is usually 5 days.
3.What payment methods are accepted for MLX90380LDC-BAC-545-SP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90380LDC-BAC-545-SP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90380LDC-BAC-545-SP?
MLX90380LDC-BAC-545-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90380LDC-BAC-545-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-545-SP?
For technical support, including MLX90380LDC-BAC-545-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90380LDC-BAC-545-SP requirements.
6.How does Aetrix verify that MLX90380LDC-BAC-545-SP is sourced from the original manufacturer or authorized distributors?
All MLX90380LDC-BAC-545-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-545-SP meets industry standards.
7.What is the process for return or replacement of MLX90380LDC-BAC-545-SP?
All MLX90380LDC-BAC-545-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90380LDC-BAC-545-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-545-SP part is unused and in its original packaging.
Return procedure for MLX90380LDC-BAC-545-SP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MLX90380LDC-BAC-545-SP Tags
-
TLV493DA1B6HTSA2
Infineon Technologies
-
EVW-AE4001B14
Panasonic Electronic Components
-
3382G-1-103G
Bourns Inc.
-
TLE5501E0001XUMA1
Infineon Technologies
-
HAL830UT-A
TDK-Micronas GmbH
-
TLE5009E1000FUMA1
Infineon Technologies
-
TLE5501E0002XUMA1
Infineon Technologies
-
HAL3725DJ-A
TDK-Micronas GmbH
-
HAL3727DJ-A
TDK-Micronas GmbH
-
HMC1501-TR
Honeywell Aerospace
-
HMC1512-TR
Honeywell Aerospace
-
AAS33001LLEATR-5
Allegro MicroSystems
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
