three axis linear accelerometer ST LIS2DTW12TR with integrated temperature sensor and FIFO memory buffer
Product Overview
The LIS2DTW12 is an ultra-low-power, high-performance three-axis linear accelerometer and temperature sensor from the "femto" family. It offers user-selectable full scales of 2g/4g/8g/16g, measuring accelerations with output data rates from 1.6 Hz to 1600 Hz. The device features an embedded temperature sensor with 0.8 C typical accuracy and ODRs from 50 to 1.6 Hz. Its integrated 32-level FIFO buffer minimizes host processor intervention, and a self-test capability verifies sensor functionality. The LIS2DTW12 includes a dedicated engine for motion and acceleration detection, including free-fall, wakeup, tap recognition, activity/inactivity, stationary/motion detection, and orientation detection. It is available in a small, thin plastic land grid array (LGA) package and operates over an extended temperature range of -40 C to +85 C.
Product Attributes
- Brand: STMicroelectronics
- Certifications: ECOPACK, RoHS, Green compliant
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vdd) | 1.62 to 3.6 | V |
| I/O Supply Voltage (Vdd_IO) | 1.62 to Vdd+0.1 | V |
| Current Consumption (Power-down) | 50 | nA |
| Current Consumption (Low-Power Mode, ODR 100 Hz) | 5 | A |
| Current Consumption (High-Performance Mode, 12.5 Hz - 1600 Hz) | 90 | A |
| Accelerometer Full Scale | 2g / 4g / 8g / 16g | |
| Accelerometer Noise Density (High-Performance Mode, 2g) | 90 | g/Hz |
| Accelerometer RMS Noise (Low-Power Mode, 2g) | 1.3 | mg(RMS) |
| Temperature Sensor Accuracy (0 C to 70 C) | 0.8 | C |
| Temperature Sensor Accuracy (-40 C to +85 C) | 1.3 | C |
| Accelerometer Data Output Resolution | 16-bit | |
| Temperature Data Output Resolution | 8 to 12-bit | |
| FIFO Buffer Size | 32-level | |
| Communication Interface | IC / SPI | |
| SPI Clock Frequency | Up to 10 | MHz |
| IC Clock Frequency (Fast Mode) | Up to 400 | kHz |
| Operating Temperature Range | -40 to +85 | C |
| Shock Survivability | 10000 | g |
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