Overview
The LIS2DTW12TR is an ultralow-power, high-performance three-axis linear accelerometer and temperature sensor developed by STMicroelectronics. It belongs to the 'femto' family, leveraging robust and mature manufacturing processes for micromachined accelerometers. This device is designed for space-constrained and battery-sensitive applications, offering a miniature sensing solution with integrated 32-level FIFO buffer, self-test capability, and multiple operating modes.
Key Specifications
| Parameter | Value |
|---|---|
| Sensing Range | ±2g, ±4g, ±8g, ±16g |
| Sensing Axis | X-Y-Z |
| Supply Voltage | 1.62V to 3.6V |
| Operating Temperature Range | -40°C to +85°C |
| Package Style | LGA-12 |
| Mounting Method | Surface Mount |
| Noise in Low-Power Mode | Down to 1.3 mg RMS |
| Accelerometer Data Output | 16-bit |
| Temperature Data Output | 12-bit |
| Shock Survivability | 10000g |
| Current Consumption in Power-Down | 50 nA typical at (Vdd = 1.8V, T = 25°C) |
| Digital Output Interface | High-speed I²C/SPI |
Key Features
- Ultralow power consumption: 50 nA in power-down mode, below 1 µA in active low-power mode
- Very low noise: down to 1.3 mg RMS in low-power mode
- Embedded 0.8 °C (typ. accuracy) temperature sensor
- Multiple operating modes with multiple bandwidths
- Android stationary detection, motion detection
- Independent IO supply
- Single data conversion on demand
- Self-test capability
- 32-level FIFO buffer
- ECOPACK and RoHS compliant
Applications
- Fragile shipment tracking
- Hearing aids
- Portable healthcare devices
- Wireless sensor nodes
- Metering equipment
- Gesture recognition and gaming
- Motion-activated functions and user interfaces
- Display orientation, tap/double-tap recognition, free-fall detection
- Smart power saving for handheld devices
Q & A
- What is the LIS2DTW12TR? The LIS2DTW12TR is an ultralow-power, high-performance three-axis linear accelerometer and temperature sensor.
- What are the sensing ranges of the LIS2DTW12TR? The device has user-selectable full scales of ±2g, ±4g, ±8g, and ±16g.
- What is the operating temperature range of the LIS2DTW12TR? The device operates over a temperature range from -40°C to +85°C.
- What is the package style of the LIS2DTW12TR? It is available in a 12-lead LGA package.
- What are the key features of the LIS2DTW12TR? It includes ultralow power consumption, very low noise, embedded temperature sensor, multiple operating modes, and a 32-level FIFO buffer.
- What are some typical applications of the LIS2DTW12TR? Applications include fragile shipment tracking, hearing aids, portable healthcare devices, wireless sensor nodes, and metering equipment.
- How does the LIS2DTW12TR manage power consumption? It has an ultralow power consumption of 50 nA in power-down mode and below 1 µA in active low-power mode.
- What is the noise level in low-power mode? The noise level is down to 1.3 mg RMS in low-power mode.
- Does the LIS2DTW12TR have self-test capability? Yes, it has an embedded self-test capability to check the functioning of the sensor.
- Is the LIS2DTW12TR compliant with environmental standards? Yes, it is ECOPACK and RoHS compliant.
