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STMicroelectronics LIS344ALTR
- Part No.:
- LIS344ALTR
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 16-LFLGA
- Datasheet:
-
LIS344ALTR.pdf
- Description:
- ACCELEROMETER 3.5G ANALOG 16LGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
LIS344ALTR from STMicroelectronics is a 3-axis analog-output MEMS linear accelerometer in LGA-16 package, delivering ±3.5g full-scale range, ratiometric output (0.100×VDD V/g sensitivity), and factory-trimmed offset/sensitivity. It operates from 2.7–3.3 V, supports self-test activation via ST pin, and targets motion-sensing applications requiring DC-coupled acceleration measurement with bandwidth up to 2.0 kHz.
For engineers reviewing the LIS344ALTR datasheet, LIS344ALTR pinout, LIS344ALTR application, or LIS344ALTR equivalent, this device is selected for compact inertial sensing where analog interface simplicity, shock survivability (10,000g), and extended temperature operation (−40°C to +85°C) are critical design requirements.
Technical Context
The LIS344ALTR integrates a surface-micromachined capacitive sensing element with a fully differential CMOS interface featuring Correlated Double Sampling (CDS) to suppress 1/f noise and offset. Its output stage uses a 32 kΩ internal resistor per channel (X/Y/Z) to form an RC low-pass filter with external load capacitance (≥2.5 nF), enabling configurable bandwidth down to 1 Hz.
All analog parameters-including zero-g level (VDD/2 ±15%), sensitivity (0.100×VDD ±10% V/g), and self-test voltage change (±84 mV)-are ratiometric to supply voltage, eliminating supply-induced errors in downstream ADC conversion chains. Factory trimming of sensitivity and offset is stored in non-volatile memory and auto-loaded at power-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-scale range | ±3.5 g - Enables detection of tilt, vibration, and impact across consumer-grade motion use cases. |
| Sensitivity | 0.100 × VDD ±10% V/g - Ratiometric scaling ensures consistent gain across 2.7–3.3 V supply range. |
| Zero-g output | VDD/2 ±15% - Centered analog output simplifies single-supply ADC interfacing without level-shifting. |
| Bandwidth | DC to 2.0 kHz - Supports high-speed motion capture; adjustable via external Cload (e.g., 100 nF → ~50 Hz cutoff). |
| Self-test output shift | ±84 mV per axis at VDD = 3.0 V - Verifies mechanical integrity and signal chain functionality in-system. |
| Shock survivability | 10,000 g for 0.1 ms - Withstands board-level handling, drop testing, and mechanical stress events. |
| Operating temperature | −40°C to +85°C - Validated for industrial and automotive cabin environments without derating. |
Pinout & Package
Package: LGA-16 (4.0 × 4.0 × 1.5 mm, 16-pad Land Grid Array). RoHS/ECOPACK® compliant, JEDEC J-STD-020C qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 11, 13, 16 | NC | No internal connection; must be left floating or grounded per layout best practice. |
| 2 | ST | Active-high self-test control: logic 0 = normal mode; logic 1 = electrostatic actuation applied. |
| 3, 5, 6, 7 | GND | Dedicated ground terminals for low-noise analog reference and power return path separation. |
| 8, 10, 12 | VoutZ / VoutY / VoutX | Analog single-ended outputs (Z/Y/X axes); each has 32 kΩ source impedance for RC filtering. |
| 14 | Vdd | Main 2.7–3.3 V analog/digital supply; requires local 100 nF + 10 µF decoupling. |
| 15 | Res | Internal bias resistor connection; must be tied to Vdd to enable internal reference generation. |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric analog output | Offset and sensitivity scale linearly with VDD, removing supply variation error in ADC-based systems. |
| Factory-trimmed calibration | Sensitivity and zero-g offset stored in non-volatile memory; no user calibration required at startup. |
| Integrated self-test | Electrostatic actuation verifies sensor mass movement and signal chain continuity without external stimulus. |
| Low-noise CDS architecture | Correlated Double Sampling cancels 1/f noise and front-end offset, enabling stable DC acceleration measurement. |
| Configurable bandwidth | External capacitor (≥2.5 nF) on each Vout pin sets cutoff frequency from 1 Hz to 2 kHz, supporting anti-aliasing and noise reduction. |
Applications
| Mobile Device Tilt Sensing | Gaming Motion Input |
|---|---|
|
Use Scenario: Detecting orientation changes in smartphones and tablets for screen rotation and UI adaptation. IC Role / Device Role / Timing Role: Analog 3-axis acceleration transducer providing DC-coupled gravity vector measurement. Use Value: ±3.5g range and ratiometric output ensure accurate tilt estimation across battery voltage variations (2.7–3.3 V). |
Use Scenario: Capturing hand or controller motion in handheld gaming peripherals for gesture recognition. IC Role / Device Role / Timing Role: Low-latency analog motion sensor feeding into microcontroller ADC for real-time motion decoding. Use Value: 2.0 kHz bandwidth and self-test capability support responsive gameplay and field-deployable reliability verification. |
| Appliance Vibration Monitoring | Robotics Joint Position Feedback |
|
Use Scenario: Monitoring drum imbalance or motor vibration in washing machines and HVAC units. IC Role / Device Role / Timing Role: Analog vibration transducer with configurable RC filtering to isolate relevant mechanical frequencies. Use Value: External Cload selection (e.g., 100 nF → 50 Hz cutoff) rejects high-frequency noise while preserving fault signatures. |
Use Scenario: Estimating joint angle and dynamic load in collaborative robotic arms using gravity-referenced acceleration. IC Role / Device Role / Timing Role: Compact, shock-tolerant inertial sensor mounted directly on moving links for embedded feedback. Use Value: 10,000g shock survivability and −40°C to +85°C rating enable operation in mechanically aggressive robotic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL335 | Wider supply range (1.8–3.6 V); higher noise density (300 µg/√Hz vs. 275 µg/√Hz); no integrated self-test. | Preferred where ultra-low supply voltage or PCB space constraints outweigh self-test requirement. | Select ADXL335 only if supply flexibility below 2.7 V is mandatory and self-test is omitted from system validation. |
| LIS3LV02DL | Same LGA-16 footprint; lower full-scale (±2.3 g); no factory trimming; requires external calibration. | Suitable for cost-sensitive designs where production calibration infrastructure exists. | Choose LIS3LV02DL when BOM cost reduction is prioritized over out-of-box accuracy and test coverage. |
Compared with ADXL335 and LIS3LV02DL, the LIS344ALTR delivers superior out-of-box accuracy via factory trimming, built-in self-test for functional safety checks, and tighter sensitivity tolerance-making it optimal for volume consumer devices where calibration overhead and field reliability are critical.
Availability
LIS344ALTR is available at Aetrix Electronics and suitable for mobile terminals, gaming input devices, appliance monitoring, and robotics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LIS344ALTR 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, specializing in MEMS, microcontrollers, power management, and automotive ICs.
The LIS344ALTR belongs to ST's legacy analog-output MEMS accelerometer family, designed specifically for cost-effective, space-constrained consumer and industrial motion sensing where simplicity, reliability, and analog interface compatibility are primary objectives.
FAQ
What is the minimum external capacitor required on each Vout pin?
A minimum 2.5 nF ceramic capacitor must be placed on each VoutX, VoutY, and VoutZ pin to ensure stable operation and prevent oscillation. This value sets the lower bound for the RC filter formed with the internal 32 kΩ output impedance; smaller values risk instability and degraded noise performance.
How does the self-test function verify sensor integrity?
The self-test applies an electrostatic force to the proof mass via the ST pin, inducing a known DC voltage shift (±84 mV at 3.0 V) on the corresponding axis output. Measuring this shift confirms both mechanical mobility of the sensing element and correct operation of the analog signal chain without external motion.
Can LIS344ALTR operate from a 2.5 V supply?
No. The absolute maximum ratings specify VDD min = 2.7 V, and electrical characteristics (including sensitivity and zero-g level) are guaranteed only within 2.7–3.3 V. Operation below 2.7 V may result in undefined behavior, reduced full-scale range, or failure to meet datasheet specifications.
Is the LIS344ALTR pin-compatible with newer ST accelerometers like LIS3DH?
No. LIS344ALTR uses LGA-16 with 16 pins including multiple GND and NC pads, while LIS3DH uses LGA-16 but with different pin assignments (e.g., I²C/SPI interfaces, interrupt outputs). Physical footprint overlap does not imply functional or electrical compatibility; redesign is required for migration.
LIS344ALTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-LFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y, Z
- Acceleration Range:
- ±3.5g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 300
- Bandwidth:
- 2kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.7V ~ 3.3V
- Features:
- Adjustable Bandwidth
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LGA (4x4)
LIS344ALTR FAQ
1.How can I place an order for LIS344ALTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS344ALTR 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 LIS344ALTR reliable?
The price and inventory of LIS344ALTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS344ALTR is usually 5 days.
3.What payment methods are accepted for LIS344ALTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS344ALTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS344ALTR?
LIS344ALTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS344ALTR 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 LIS344ALTR?
For technical support, including LIS344ALTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS344ALTR requirements.
6.How does Aetrix verify that LIS344ALTR is sourced from the original manufacturer or authorized distributors?
All LIS344ALTR 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 LIS344ALTR meets industry standards.
7.What is the process for return or replacement of LIS344ALTR?
All LIS344ALTR units undergo pre-shipment inspection (PSI). If there is an issue with LIS344ALTR, 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 LIS344ALTR part is unused and in its original packaging.
Return procedure for LIS344ALTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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