Overview
The LIS2DWTR is an ultra-low-power, high-performance 3-axis linear accelerometer produced by STMicroelectronics. It belongs to the ‘femto’ family, leveraging robust and mature manufacturing processes used for micromachined accelerometers. This device is designed for applications requiring low power consumption and high accuracy in motion detection. It features user-selectable full scales of ±2g/±4g/±8g/±16g and can measure accelerations with output data rates ranging from 1.6 Hz to 1600 Hz. The LIS2DWTR is available in a small thin plastic land grid array (LGA) package and operates over an extended temperature range from -40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 1.62 V to 3.6 V |
| Full Scale Range | ±2g/±4g/±8g/±16g |
| Output Data Rate | 1.6 Hz to 1600 Hz |
| Power Consumption | 50 nA in power-down mode, below 1 µA in active low-power mode |
| Noise Level | Down to 1.3 mg RMS in low-power mode |
| Communication Interface | High-speed I²C/SPI digital output interface |
| Data Output | 16-bit data output |
| FIFO Buffer | 32-level FIFO |
| Temperature Range | -40°C to +85°C |
| Shock Survivability | 10000 g |
| Compliance | ECOPACK, RoHS, and ‘Green’ compliant |
Key Features
- Ultra-low 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
- Multiple operating modes with multiple bandwidths
- Android stationary detection, motion detection
- Independent I/O supply
- High-speed I²C/SPI digital output interface
- Single data conversion on demand
- Embedded temperature sensor
- Self-test capability
- 32-level FIFO buffer
- 10000 g high shock survivability
Applications
- Motion detection for wearables
- 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
- Hearing aids
- Portable healthcare devices
- Wireless sensor nodes
- Motion-enabled metering devices
Q & A
- What is the power consumption of the LIS2DWTR in power-down mode?
The power consumption is 50 nA in power-down mode. - What are the full scale ranges available for the LIS2DWTR?
The full scale ranges are ±2g/±4g/±8g/±16g. - What is the output data rate range of the LIS2DWTR?
The output data rate ranges from 1.6 Hz to 1600 Hz. - Does the LIS2DWTR have an embedded temperature sensor?
Yes, it has an embedded temperature sensor. - What is the communication interface of the LIS2DWTR?
The communication interface is high-speed I²C/SPI digital output interface. - What is the noise level of the LIS2DWTR in low-power mode?
The noise level is down to 1.3 mg RMS in low-power mode. - Is the LIS2DWTR compliant with environmental standards?
Yes, it is ECOPACK, RoHS, and ‘Green’ compliant. - What is the shock survivability of the LIS2DWTR?
The device can survive up to 10000 g of shock. - What is the temperature range of the LIS2DWTR?
The temperature range is -40°C to +85°C. - Does the LIS2DWTR have a self-test capability?
Yes, it has a self-test capability to check the sensor functionality.
