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STMicroelectronics LIS332AXTR
- Part No.:
- LIS332AXTR
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 16-VFLGA
- Datasheet:
-
LIS332AXTR.pdf
- Description:
- ACCELEROMETER 2G ANALOG 16LGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,938
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Product details
Overview
LIS332AXTR from STMicroelectronics is a 3-axis ±2 g analog-output MEMS accelerometer in LGA-16 (3×3×1.0 mm) package, delivering absolute DC-coupled voltage outputs per axis (VoutX/VoutY/VoutZ), factory-trimmed sensitivity (0.363 V/g ±5%), zero-g level (1.25 V ±3.5%), and 2.0 kHz resonant frequency for inertial motion sensing in space-constrained portable electronics.
For engineers reviewing the LIS332AXTR datasheet, LIS332AXTR pinout, LIS332AXTR application, or LIS332AXTR equivalent, this device supports tilt detection, free-fall triggering, gaming motion input, and anti-theft orientation monitoring - with self-test, power-down mode, and 10,000 g shock survivability critical for reliability validation and embedded system integration.
Technical Context
The LIS332AXTR integrates a surface-micromachined silicon sensing element with a fully differential CMOS interface featuring correlated double sampling (CDS) to suppress 1/f noise and offset drift. Its analog outputs are absolute to supply voltage (Vdd), enabling direct interfacing with ADCs using independent reference voltages without gain/offset recalibration.
Bandwidth is programmable via external capacitors (CLOAD ≥ 2.5 nF) across each output, forming RC filters with internal 32 kΩ output impedance; minimum corner frequency is ~1 Hz (5 µF), maximum is ~2.0 kHz (2.5 nF), matching mechanical resonance and supporting DC–2 kHz acceleration measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-scale range | ±2 g - Enables precise low-g motion detection for tilt, gesture, and impact events in handheld devices. |
| Sensitivity | 0.363 V/g ±5% - Factory-trimmed; stable over temperature (±0.01 %/°C), eliminating need for system-level calibration. |
| Zero-g level | 1.25 V ±3.5% at 25°C - Absolute to Vdd; enables reliable DC offset referencing for static orientation determination. |
| Output impedance | 32 kΩ - Forms low-pass filter with external CLOAD; allows simple, low-cost anti-aliasing without op-amp buffering. |
| Self-test output change | 40–550 mV per axis - Electrostatic actuation verifies mechanical integrity and signal chain functionality in-system. |
| Power-down current | 1 µA - Reduces standby power in battery-operated devices during idle periods without losing configuration. |
| Shock survivability | 10,000 g / 0.1 ms - Ensures robustness against mechanical stress during drop events or assembly handling. |
Pinout & Package
Package: LGA-16 (3.0 × 3.0 × 1.0 mm), RoHS-compliant ECOPACK® plastic land grid array with exposed die pad not electrically connected. Pin 1 indicator located at top-left corner (see top view in datasheet Figure 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 7, 8, 10, 12, 14 | NC | Internally not connected - must be left floating or tied to GND per layout best practice; no electrical function. |
| 2, 15 | res | Internal resistor connection to Vdd - externally connect to Vdd to enable internal bias network for sensor operation. |
| 4 | ST | Self-test control - logic high (≥0.8×Vdd) activates electrostatic test force; logic low (≤0.2×Vdd) disables. |
| 5 | PD | Power-down control - logic high places device in ultra-low-current (1 µA) sleep mode; logic low enables normal operation. |
| 6 | GND | 0 V reference - primary ground return for analog and digital circuitry; requires low-impedance PCB plane connection. |
| 9, 11, 13 | VoutZ / VoutY / VoutX | Analog voltage outputs - DC-coupled, ratiometric to Vdd; each provides linear response to acceleration on respective axis. |
| 16 | Vdd | Supply input - operates from 2.16–3.6 V; powers both MEMS element and interface IC; requires local 100 nF + 10 µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed sensitivity & zero-g level | Non-volatile trimming stored on-chip eliminates post-mount calibration and ensures ±5% sensitivity tolerance and ±3.5% zero-g accuracy. |
| Self-test capability | Electrostatic actuation induces measurable DC voltage shift (40–550 mV) on all three outputs, verifying full signal path integrity without external stimulus. |
| Programmable bandwidth | External capacitor (≥2.5 nF) sets cut-off frequency from 1 Hz to 2.0 kHz - enables noise reduction and aliasing control tailored to application dynamics. |
| Supply-voltage-independent outputs | All analog parameters (sensitivity, zero-g level) scale absolutely with Vdd - permits use with fixed-reference ADCs without gain/offset compensation. |
| Ultra-low power-down current | 1 µA shutdown current extends battery life in intermittent-sensing applications such as mobile device wake-on-motion or security tamper detection. |
Applications
| Tilt Detection | Free-Fall Detection |
|---|---|
|
Use Scenario: Smartphone or tablet detects orientation change (portrait ↔ landscape) by measuring static gravity vector components on X/Y/Z axes. IC Role / Device Role / Timing Role: Analog-output 3-axis accelerometer providing DC-stable voltage signals proportional to gravitational acceleration on each axis. Use Value: Enables seamless UI rotation without requiring digital processing overhead or external reference; factory-trimmed zero-g level ensures <±1° tilt resolution at 25°C. |
Use Scenario: Laptop triggers hard drive park mechanism within 10–50 ms of detecting sudden vertical acceleration loss during drop events. IC Role / Device Role / Timing Role: Low-latency analog sensor feeding comparator or microcontroller ADC to identify near-zero-g condition across all axes. Use Value: 2.0 kHz bandwidth and 10,000 g shock rating ensure reliable detection before impact; power-down mode reduces false triggers during transport. |
| Gaming Motion Input | Anti-Theft Orientation Monitoring |
|
Use Scenario: Handheld game controller interprets wrist rotation and swing gestures via real-time analog acceleration waveforms on three axes. IC Role / Device Role / Timing Role: High-fidelity analog front-end delivering continuous voltage outputs with <0.5% nonlinearity and 100 µg/√Hz noise density. Use Value: Enables smooth, responsive motion control without quantization delay; self-test confirms sensor health before gameplay session starts. |
Use Scenario: Asset tracker alerts if cargo container is tilted beyond threshold (e.g., >30°) during unauthorized handling or theft attempt. IC Role / Device Role / Timing Role: Always-on low-power inertial monitor comparing static VoutX/VoutY/VoutZ ratios against calibrated gravity vector thresholds. Use Value: 1 µA power-down mode allows multi-year battery life in dormant state; factory-trimmed zero-g level ensures consistent trip-point accuracy across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis analog-output accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LIS331DLHTR | Digital I²C/SPI output; ±2/±4/±8 g selectable range; no analog outputs; higher power (300 µA active) | Requires microcontroller with digital interface; unsuitable for direct ADC coupling or analog comparator circuits | Select when system already uses digital buses and firmware can handle data conversion and filtering |
| ADXL335BCPZ-RL7 | 3-axis analog output; ±3 g range; 350 µg/√Hz noise; no self-test; wider supply (1.8–3.6 V); 4 mm × 4 mm LFCSP | Larger footprint; lacks embedded self-test and factory zero-g trim; less stable over temperature (±1.5 mg/°C vs. ±0.2 mg/°C) | Select when ±3 g range is required and board area allows larger package; verify zero-g drift in thermal cycling |
Compared with LIS332AXTR, LIS331DLHTR trades analog simplicity for digital configurability and flexibility, while ADXL335BCPZ-RL7 offers broader supply range but sacrifices self-test, shock rating (5,000 g), and factory calibration precision - making LIS332AXTR optimal for compact, high-reliability analog motion sensing where DC stability and in-field verification matter.
Availability
LIS332AXTR is available at Aetrix Electronics and suitable for tilt detection, free-fall protection, gaming motion input, and anti-theft orientation monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and consumer OEM programs.
Supply support for LIS332AXTR 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 microcontrollers, sensors, power ICs, and analog/mixed-signal products for automotive, industrial, and consumer markets.
The LIS332AXTR belongs to ST's legacy MEMS inertial sensor family, engineered specifically for ultracompact, low-power analog acceleration measurement in portable electronics - emphasizing factory calibration, shock resilience, and ease of analog signal conditioning.
FAQ
What is the recommended external capacitor value for 100 Hz anti-aliasing filtering?
For a 100 Hz cut-off frequency, use 50 nF ceramic capacitors on VoutX, VoutY, and VoutZ. This value is derived from the formula ft = 1/(2π × 32 kΩ × CLOAD), and matches Table 6 in the datasheet. Ensure CLOAD ≥ 2.5 nF minimum to maintain stability and avoid peaking near the 2.0 kHz mechanical resonance.
Can LIS332AXTR operate from a 1.8 V supply?
No. The LIS332AXTR requires a minimum supply voltage of 2.16 V and is specified for operation between 2.16 V and 3.6 V. At 1.8 V, the internal biasing fails, resulting in invalid or missing analog outputs and potential latch-up. For 1.8 V systems, consider ST's LIS2DH12 or ADI's ADXL345 with I²C level-shifting.
How does the self-test function verify sensor health?
The self-test applies an electrostatic force to the MEMS proof mass, inducing a known DC voltage shift (40–550 mV) on each output channel. By measuring this shift while holding the device stationary, users confirm both mechanical mobility of the sensing element and correct gain/offset behavior of the analog signal chain - without requiring external vibration sources or motion fixtures.
Is the LGA-16 package compatible with standard reflow soldering profiles?
Yes. The LIS332AXTR's LGA-16 package is qualified per JEDEC J-STD-020C for moisture sensitivity level 3 and withstands peak reflow temperatures up to 260°C. Follow ST's recommended land pattern (available at www.st.com) and use solder paste with appropriate stencil aperture to ensure reliable solder joint formation on all 16 pads.
LIS332AXTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-VFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y, Z
- Acceleration Range:
- ±2g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 363
- Bandwidth:
- 2kHz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.16V ~ 3.6V
- Features:
- Adjustable Bandwidth
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LGA (3x3)
LIS332AXTR FAQ
1.How can I place an order for LIS332AXTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS332AXTR 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 LIS332AXTR reliable?
The price and inventory of LIS332AXTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS332AXTR is usually 5 days.
3.What payment methods are accepted for LIS332AXTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS332AXTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS332AXTR?
LIS332AXTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS332AXTR 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 LIS332AXTR?
For technical support, including LIS332AXTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS332AXTR requirements.
6.How does Aetrix verify that LIS332AXTR is sourced from the original manufacturer or authorized distributors?
All LIS332AXTR 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 LIS332AXTR meets industry standards.
7.What is the process for return or replacement of LIS332AXTR?
All LIS332AXTR units undergo pre-shipment inspection (PSI). If there is an issue with LIS332AXTR, 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 LIS332AXTR part is unused and in its original packaging.
Return procedure for LIS332AXTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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