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Melexis Technologies NV MLX90290LUA-AAA-521-BU
- Part No.:
- MLX90290LUA-AAA-521-BU
- Manufacturer:
- Melexis Technologies NV
- Category:
- Linear, Compass (ICs)
- Package:
- TO-226-3, TO-92-3 Short Body
- Datasheet:
-
MLX90290LUA-AAA-521-BU.pdf
- Description:
- SENSOR HALL LINEAR ANALOG TO92
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
MLX90290LUA-AAA-521-BU from Melexis is a factory-trimmed linear Hall-effect sensor in TO-92-3L (UA) package, operating from 5 V ±10%, delivering 31.25 mV/mT sensitivity with 500 ppm/°C magnet thermal drift compensation. It provides ratiometric analog output (quiescent level = 50% VDD), achieves 15 kHz signal bandwidth, and is AEC-Q100 qualified for automotive position sensing.
For engineers reviewing the MLX90290LUA-AAA-521-BU datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, exact pin functions, real-world application mappings, and validated alternative options for linear magnetic field measurement in harsh environments.
Technical Context
The MLX90290LUA-AAA-521-BU integrates a Hall plate, chopper-stabilized amplifier, voltage regulator, and analog output driver in mixed-signal CMOS. Its offset cancellation system enables high accuracy across temperature, while factory trimming sets both sensitivity (31.25 mV/mT @ 5 V) and TCS (500 ppm/°C) to match specific magnet types.
It operates over –40°C to +150°C with 40–70 µs power-on time, 900 kHz chopping frequency, and 15 kHz small-signal bandwidth (UA package). The ratiometric output ensures immunity to supply variation, and its 8 kV HBM ESD rating supports robust deployment in automotive ECUs and industrial motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 5 V ±10% - powers internal regulator and defines full-scale output range |
| Sensitivity | 31.25 mV/mT @ 5 V - enables precise linear position resolution down to ~0.032 mT per LSB in 12-bit ADC systems |
| Thermal Drift Compensation | 500 ppm/°C - actively corrects for ferrite magnet flux loss over temperature, maintaining accuracy in rotary encoders |
| Signal Bandwidth | 15 kHz - supports real-time motor commutation feedback up to 900 RPM at 4-pole pairs |
| Quiescent Output | 2.5 V @ 0 mT (50% VDD) - simplifies differential measurement and eliminates external biasing |
| AEC-Q100 Grade | Grade 0 (–40°C to +150°C) - certified for under-hood automotive applications including throttle and suspension sensors |
| Power-On Time | 40–70 µs - allows fast wake-up in micro-power systems with periodic magnetic sampling |
Pinout & Package
MLX90290LUA-AAA-521-BU uses the RoHS-compliant TO-92-3L (UA) through-hole package (3.0 × 4.1 × 14.5 mm), optimized for mechanical stability in vibration-prone environments. Lead pitch is standard 1.27 mm; leads are straight-form unless specified otherwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Supply Input | 5 V ±10% input; requires ≥0.1 µF bypass capacitor placed adjacent to pin for noise immunity |
| 2 (GND) | Ground Reference | Analog ground return path; must be low-impedance and separated from digital ground in mixed-signal PCBs |
| 3 (OUT) | Analog Output | Ratiometric voltage output (0.25–4.75 V swing); drives loads up to 1 mA with ≤5 Ω source impedance |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed sensitivity & TCS | Eliminates post-production calibration; 31.25 mV/mT and 500 ppm/°C are laser-trimmed at wafer level |
| Chopper-stabilized architecture | Reduces offset drift to <±25 mV over –40°C to +150°C, enabling stable zero-field reference |
| Ratiometric output | Output scales linearly with VDD - removes need for precision voltage reference in supply-tolerant designs |
| Fast start-up (≤70 µs) | Supports duty-cycled operation in battery-powered sensors, reducing average current to sub-mA levels |
| AEC-Q100 qualification | Validated for automotive use with 8 kV HBM ESD, 165°C max junction temperature, and extended lifetime reliability |
Applications
| Linear Position Sensing | Rotary Position Sensing |
|---|---|
Use Scenario: Non-contact displacement measurement of brake pedal travel or suspension arm deflection in automotive chassis systems. IC Role / Device Role / Timing Role: Linear Hall sensor converting magnetic field gradient into proportional analog voltage for ECU ADC sampling. Use Value: 1.5% linearity and 5% sensitivity accuracy enable sub-millimeter position resolution without mechanical wear or contact bounce. | Use Scenario: Angular position detection in electric power steering (EPS) motor rotor or throttle valve shaft. IC Role / Device Role / Timing Role: Analog magnetic angle transducer feeding closed-loop control loop with 15 kHz bandwidth for real-time torque response. Use Value: 500 ppm/°C TCS compensates for NdFeB or ferrite magnet drift, maintaining ±0.5° angular error over full automotive temperature range. |
| Current Sensing | Motor Commutation |
Use Scenario: Isolated DC bus current monitoring in 12 V automotive auxiliary systems (e.g., HVAC blower, seat heaters). IC Role / Device Role / Timing Role: Open-loop current sensor using conductor-generated field; outputs voltage proportional to current magnitude. Use Value: Ratiometric output rejects supply ripple; 31.25 mV/mT sensitivity yields ~31 mV/A for 10 mm air gap with 100 A-turn conductor, compatible with standard op-amp conditioning. | Use Scenario: Six-step commutation feedback for 3-phase BLDC motors in e-bike controllers or HVAC blowers. IC Role / Device Role / Timing Role: Hall-effect rotor position detector providing synchronized analog signals to MCU for phase timing. Use Value: 15 kHz bandwidth supports >3,000 RPM operation; fast 70 µs power-on enables synchronous wake-up with motor enable signal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MLX90290LUA-AAA-520-BU | No thermal drift compensation (0 ppm/°C TCS) vs. 500 ppm/°C | Suitable only for current sensing or environments with stable magnets; not recommended for rotary position with ferrite magnets | Select when magnet temperature is tightly controlled and cost optimization is prioritized over thermal accuracy |
| Allegro A1302LLHLT-T | Lower sensitivity (1.3 mV/G = 13 mV/mT), no factory TCS trim, wider quiescent tolerance (4.8–5.2 V at 5 V) | Limited to lower-resolution position tasks; lacks AEC-Q100 Grade 0 qualification and automotive temperature range | Choose for non-automotive industrial applications where 150°C operation and magnet drift compensation are not required |
Compared with MLX90290LUA-AAA-521-BU, the -520-BU variant sacrifices thermal compensation for cost, while the A1302 offers broader availability but reduced accuracy, bandwidth, and automotive compliance - making MLX90290LUA-AAA-521-BU optimal for safety-critical, high-accuracy rotary/linear sensing where magnet drift must be actively corrected.
Availability
MLX90290LUA-AAA-521-BU is available at Aetrix Electronics and suitable for automotive position sensing, industrial motor control, and battery-powered current monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MLX90290LUA-AAA-521-BU 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 wireless RF solutions for automotive and industrial markets, with core expertise in Hall-effect, IR, and pressure sensing.
The MLX90290 product line delivers factory-configurable linear Hall sensors optimized for high-accuracy, high-speed magnetic field measurement in demanding automotive and industrial environments - particularly where thermal drift compensation and AEC-Q100 compliance are mandatory.
FAQ
What is the supply voltage range and quiescent current of the MLX90290LUA-AAA-521-BU?
The MLX90290LUA-AAA-521-BU operates from 4.5 V to 5.5 V (5 V ±10%) and draws 3–8 mA typical supply current. Its quiescent output voltage is precisely 2.5 V at zero magnetic field, independent of load within 1 mA. This ratiometric behavior ensures consistent scaling across supply variations, and the low current enables integration into power-constrained automotive subsystems without thermal derating concerns. The MLX90290LUA-AAA-521-BU maintains full specification compliance across its entire operating temperature range.
How does the 500 ppm/°C thermal coefficient (TCS) improve performance in rotary position sensing?
The 500 ppm/°C TCS in the MLX90290LUA-AAA-521-BU actively compensates for the negative temperature coefficient of common ferrite magnets, preventing angular error drift as ambient temperature changes. In a rotary throttle valve application, this maintains ±0.5° accuracy from –40°C to +150°C - whereas an uncompensated sensor would exhibit >3° error at extremes. The MLX90290LUA-AAA-521-BU's factory-trimmed TCS is matched to the magnet type during production, eliminating need for system-level software correction.
Can the MLX90290LUA-AAA-521-BU be used in current sensing applications, and what is its effective resolution?
Yes - the MLX90290LUA-AAA-521-BU is routinely deployed in open-loop current sensing by measuring the field around a conductor. With 31.25 mV/mT sensitivity and typical linearity of ±1.5%, it achieves ~0.032 mT/LSB resolution when paired with a 12-bit ADC. For a 100 A-turn conductor at 10 mm air gap, this yields ~31 mV/A output, supporting ±32 A full-scale measurement with <1% total error. The MLX90290LUA-AAA-521-BU's ratiometric output further enhances accuracy by rejecting supply noise.
What is the maximum signal bandwidth and how does it affect motor commutation timing?
The MLX90290LUA-AAA-521-BU delivers 15 kHz small-signal bandwidth in the UA (TO-92) package, corresponding to a 33 µs rise time. At 3,000 RPM with a 4-pole-pair motor, electrical frequency is 1,000 Hz - well within the sensor's flat response region. This ensures minimal phase lag (<3.6° at 1 kHz), preserving timing integrity in six-step BLDC commutation. The MLX90290LUA-AAA-521-BU's 70 µs power-on time also enables synchronization with motor enable pulses for ultra-low standby power.
Is the MLX90290LUA-AAA-521-BU pin-compatible with other variants in the MLX90290 family?
Yes - all MLX90290 UA-package variants (e.g., MLX90290LUA-AAA-511-BU, MLX90290LUA-AAA-531-BU) share identical TO-92-3L pinout: Pin 1 = VDD, Pin 2 = GND, Pin 3 = OUT. Mechanical dimensions, lead pitch (1.27 mm), and soldering profiles are fully interchangeable. The MLX90290LUA-AAA-521-BU differs only in factory-trimmed sensitivity (31.25 mV/mT) and TCS (500 ppm/°C), requiring no PCB or firmware changes when substituted within the same package form factor.
MLX90290LUA-AAA-521-BU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Melexis Technologies NV
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Short Body
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- Analog Voltage
- Sensing Range:
- -
- Voltage - Supply:
- 3.15V ~ 5.5V
- Current - Supply (Max):
- 8mA
- Current - Output (Max):
- 20mA
- Resolution:
- -
- Bandwidth:
- 30kHz
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Features:
- Programmable, Temperature Compensated
- Supplier Device Package:
- TO-92-3
- Mounting Type:
- Through Hole
MLX90290LUA-AAA-521-BU FAQ
1.How can I place an order for MLX90290LUA-AAA-521-BU through Aetrix?
Please submit a Request for Quotation (RFQ) for MLX90290LUA-AAA-521-BU 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 MLX90290LUA-AAA-521-BU reliable?
The price and inventory of MLX90290LUA-AAA-521-BU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90290LUA-AAA-521-BU is usually 5 days.
3.What payment methods are accepted for MLX90290LUA-AAA-521-BU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90290LUA-AAA-521-BU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MLX90290LUA-AAA-521-BU?
MLX90290LUA-AAA-521-BU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MLX90290LUA-AAA-521-BU 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 MLX90290LUA-AAA-521-BU?
For technical support, including MLX90290LUA-AAA-521-BU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90290LUA-AAA-521-BU requirements.
6.How does Aetrix verify that MLX90290LUA-AAA-521-BU is sourced from the original manufacturer or authorized distributors?
All MLX90290LUA-AAA-521-BU 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 MLX90290LUA-AAA-521-BU meets industry standards.
7.What is the process for return or replacement of MLX90290LUA-AAA-521-BU?
All MLX90290LUA-AAA-521-BU units undergo pre-shipment inspection (PSI). If there is an issue with MLX90290LUA-AAA-521-BU, 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 MLX90290LUA-AAA-521-BU part is unused and in its original packaging.
Return procedure for MLX90290LUA-AAA-521-BU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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