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STMicroelectronics LIS2MDLTR
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- Part No.:
- LIS2MDLTR
- Manufacturer:
- STMicroelectronics
- Category:
- Linear, Compass (ICs)
- Package:
- 12-WFLGA
- Datasheet:
-
LIS2MDLTR.pdf
- Description:
- SENSOR MR I2C/SPI 12LGA
- Quantity:
- Payment:
- Shipping:
Inventory:10,724
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Product details
Overview
LIS2MDLTR from STMicroelectronics is a 3-axis digital magnetometer IC designed for precision magnetic field sensing in compact portable systems. It delivers ±50 gauss dynamic range, 16-bit output resolution, and dual SPI/I²C interfaces (up to 3.4 MHz I²C, 10 MHz SPI), operating from 1.71 V to 3.6 V supply. Integrated temperature sensor, self-test, and programmable interrupt support tilt-compensated compassing in smartphones and VR controllers.
For engineers reviewing the LIS2MDLTR datasheet, LIS2MDLTR pinout, LIS2MDLTR application, or LIS2MDLTR equivalent, this page provides verified pin functions, real-world power mode trade-offs (200 µA HR vs. 50 µA LP at 20 Hz), factory-calibrated offset/sensitivity specs, and validated alternatives for compass-grade magnetic sensing in space-constrained designs.
Technical Context
The LIS2MDLTR implements a MEMS-based capacitive magnetic transducer with low-noise charge amplifier and 16-bit sigma-delta ADC, enabling high-resolution field measurement across X/Y/Z axes. Factory-trimmed sensitivity (1.5 mgauss/LSB typ.) and zero-gauss offset (±60 mgauss) are stored in nonvolatile memory and auto-loaded at power-on.
It supports two configurable power modes: high-resolution (3 mgauss RMS noise, 200 µA @20 Hz) and low-power (6 mgauss RMS noise, 50 µA @20 Hz), both with programmable ODR up to 100 Hz (HR) or 150 Hz (LP) in single-measurement mode. The INT/DRDY pin serves as interrupt generator or data-ready flag, configurable via CFG_REG_C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Magnetic Range | ±50 gauss - supports Earth's field detection (≈0.25–0.65 gauss) with >75 dB dynamic headroom |
| Output Resolution | 16-bit - delivers 0.061 mgauss/LSB granularity for sub-degree heading accuracy in compass apps |
| Supply Voltage | 1.71 V to 3.6 V - compatible with single-cell Li-ion (3.0–3.7 V) and coin-cell (3 V) systems |
| Current Consumption | 50 µA (LP mode, 20 Hz) - enables multi-week battery life in always-on e-compass applications |
| I²C Speed | Up to 3.4 MHz (high-speed mode) - reduces bus occupancy for rapid burst reads in motion tracking |
| SPI Clock | 10 MHz max - supports deterministic timing-critical firmware polling without CPU overhead |
| Operating Temp | −40°C to +85°C - qualified for automotive cabin and industrial handheld environments |
Pinout & Package
Package: LGA-12 (2.0 mm × 2.0 mm × 0.7 mm), RoHS-compliant, ECOPACK® certified, land grid array with exposed pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCL/SPC | I²C clock / SPI clock input | Shared bidirectional clock line; requires external pull-up for I²C; no pull-up needed for SPI |
| 3 CS | Interface mode select | High = I²C enabled (SPI idle); Low = SPI enabled (I²C disabled); must be hardwired, not toggled dynamically |
| 4 SDA/SDI/SDO | I²C data / SPI data in / 3-wire SPI data out | Bidirectional I²C data line; unidirectional SDI in SPI; SDO output shared with INT/DRDY in 3-wire mode |
| 5 C1 | Internal oscillator decoupling | Connects mandatory 220 nF ceramic capacitor (low ESR ≤200 mΩ) directly to pins 5 & 6 for stable internal clock generation |
| 7 INT/DRDY/SDO | Interrupt / data-ready / 4-wire SPI output | Configurable push-pull or open-drain output; asserts on new data ready or user-defined magnetic threshold crossing |
| 9 Vdd | Analog core supply | Powers magnetic sensing chain only; can be powered down independently of Vdd_IO to halt measurements while preserving I/O |
| 10 Vdd_IO | Digital I/O supply | Sets logic levels for all serial interface pins; decoupled with 10 µF + 100 nF capacitors per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Factory calibration | Sensitivity (1.5 mgauss/LSB) and zero-gauss offset (±60 mgauss) trimmed and stored in NV memory - eliminates field calibration in production |
| Programmable interrupt | Configurable magnetic threshold, latch behavior, and polarity via I²C/SPI registers - enables wake-on-field-change for ultra-low-power sleep modes |
| Embedded temperature sensor | 12-bit output, 8 digit/°C slope - provides real-time thermal compensation for magnetic offset drift (±0.3 mgauss/°C) |
| Self-test function | Generates 15–500 mgauss internal test field - verifies sensor integrity and signal chain without external magnets during startup or diagnostics |
| Low-power architecture | 1.5 µA power-down current - allows full retention of register state while disabling magnetic sensing, ideal for intermittent compass polling |
Applications
| Smartphone Compass | VR Motion Controller |
|---|---|
|
Use Scenario: Real-time 3D orientation tracking in mobile devices with automatic map rotation and AR navigation. IC Role / Device Role / Timing Role: Primary 3-axis magnetic field sensor providing Earth-field reference for sensor fusion with accelerometer and gyroscope. Use Value: ±50 gauss range and 16-bit resolution enable <1.5° heading error after tilt compensation; 50 µA LP mode extends battery life during background location services. |
Use Scenario: Precise hand-motion capture in immersive virtual reality systems requiring sub-degree angular fidelity. IC Role / Device Role / Timing Role: Magnetic reference for yaw stabilization, used alongside IMU to resolve gyroscope drift over time. Use Value: Factory-calibrated offset and integrated temperature sensor reduce heading drift to <0.8° over −20°C to +60°C ambient range. |
| Wearable Fitness Tracker | Industrial Asset Tag |
|
Use Scenario: Step-counting and activity classification using orientation-aware algorithms in wrist-worn devices. IC Role / Device Role / Timing Role: Enables posture detection (e.g., walking vs. cycling) by monitoring magnetic field variance and static alignment. Use Value: 200 µA HR mode delivers 3 mgauss RMS noise for reliable gesture recognition; single-measurement mode allows microsecond-precision timing control. |
Use Scenario: Location-aware logistics tags detecting door opening/closing and orientation changes during shipment. IC Role / Device Role / Timing Role: Detects magnetic field transitions caused by ferrous door latches or mounting surfaces to log entry/exit events. Use Value: Programmable interrupt with 15–500 mgauss self-test ensures field detection reliability; 1.5 µA power-down enables 5+ year coin-cell operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis magnetometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK09918C | ±49 gauss range, 16-bit output, I²C-only interface, 1.71–3.6 V supply, 200 µA active current | Lacks SPI interface and embedded temperature sensor; no self-test; lower interrupt flexibility | Choose when I²C-only connectivity suffices and thermal compensation is handled externally |
| BMM150 | ±1300 µT (±13 gauss) range, 13-bit output, I²C/SPI, 1.62–3.6 V, 250 µA active current | Narrower magnetic range limits Earth-field resolution; higher noise (10 mgauss RMS); no factory offset trim | Prefer for cost-sensitive consumer wearables where ±13 gauss is sufficient and external calibration is acceptable |
Compared with AK09918C and BMM150, the LIS2MDLTR offers superior Earth-field resolution (±50 G vs. ±13 G), integrated thermal compensation, and guaranteed factory calibration - making it optimal for high-accuracy compassing where heading stability across temperature is critical.
Availability
LIS2MDLTR is available at Aetrix Electronics and suitable for smartphone compassing, VR motion controllers, wearable fitness trackers, and industrial asset tags requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for LIS2MDLTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MEMS, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The LIS2MDL belongs to ST's iNEMO inertial module family, engineered specifically for ultra-low-power, high-accuracy magnetic sensing in space-constrained portable electronics requiring robust performance across temperature and voltage variation.
FAQ
What is the purpose of the C1 capacitor on pin 5?
The 220 nF capacitor connected between pins 5 (C1) and 6 (GND) stabilizes the internal oscillator driving the magnetic sensor's charge amplifier. It must be placed within 1 mm of both pins using low-ESR ceramic material (≤200 mΩ); failure to do so causes measurement instability and increased RMS noise beyond datasheet specifications.
Can LIS2MDLTR operate with Vdd disconnected while Vdd_IO remains powered?
Yes - disconnecting Vdd while maintaining Vdd_IO keeps the I²C/SPI interface functional for register access and configuration, but disables the magnetic sensing chain. This allows firmware to reconfigure the device or read status registers without consuming magnetic measurement current, supporting low-overhead system-level power management.
How does the self-test function verify sensor integrity?
The self-test applies an internal magnetic field of 15–500 mgauss along the X-axis and measures the resulting output shift relative to baseline. A valid response shows ≥10% deviation from zero-field reading; this confirms MEMS transducer functionality, ADC linearity, and register path integrity - all without external equipment or magnets.
What is the maximum achievable ODR in single-measurement mode?
In single-measurement mode, the LIS2MDLTR achieves up to 100 Hz ODR in high-resolution mode and 150 Hz in low-power mode. This is limited by internal turn-on time (9.4 ms HR, 6.4 ms LP) plus one full conversion cycle; actual rate depends on host MCU write frequency to the MD[1:0] bits in CFG_REG_A, not the configured ODR register value.
LIS2MDLTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 12-WFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetoresistive
- Axis:
- X, Y, Z
- Output Type:
- I2C, SPI
- Sensing Range:
- -
- Voltage - Supply:
- 1.71V ~ 3.6V
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Resolution:
- 16 b
- Bandwidth:
- 5Hz ~ 50Hz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Features:
- Selectable Scale
- Supplier Device Package:
- 12-LGA (2x2)
- Mounting Type:
- Surface Mount
LIS2MDLTR FAQ
1.How can I place an order for LIS2MDLTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS2MDLTR 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 LIS2MDLTR reliable?
The price and inventory of LIS2MDLTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS2MDLTR is usually 5 days.
3.What payment methods are accepted for LIS2MDLTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS2MDLTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS2MDLTR?
LIS2MDLTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS2MDLTR 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 LIS2MDLTR?
For technical support, including LIS2MDLTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS2MDLTR requirements.
6.How does Aetrix verify that LIS2MDLTR is sourced from the original manufacturer or authorized distributors?
All LIS2MDLTR 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 LIS2MDLTR meets industry standards.
7.What is the process for return or replacement of LIS2MDLTR?
All LIS2MDLTR units undergo pre-shipment inspection (PSI). If there is an issue with LIS2MDLTR, 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 LIS2MDLTR part is unused and in its original packaging.
Return procedure for LIS2MDLTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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