Overview
The AIS2DW12TR is a MEMS digital output motion sensor designed by STMicroelectronics, specifically tailored for automotive applications. This ultra-low-power 3-axis accelerometer leverages robust and mature manufacturing processes to address non-safety automotive needs. It features four different ultra-low-power modes and two user-selectable full scales (±2g/±4g), allowing it to measure accelerations with output data rates ranging from 1.6 Hz to 100 Hz. The sensor includes an embedded self-test capability and a dedicated internal engine for motion and acceleration detection, making it ideal for various automotive functions.
Key Specifications
| Parameter | Value |
|---|---|
| Sensing Range | ±2g, ±4g |
| Sensing Axis | X, Y, Z |
| Supply Voltage | 1.62 V to 3.6 V |
| Supply Current (typical) | 5 µA |
| Operating Temperature Range | -40°C to +85°C |
| Package Style | LGA-12 |
| Mounting Method | Surface Mount |
| Data Output Interface | High-speed I²C/SPI |
| Data Output Resolution | 16-bit |
| FIFO Buffer | 32-level embedded FIFO |
| Shock Survivability | 10000 g |
| Compliance | AEC-Q100, RoHS, ECOPACK, and “Green” compliant |
Key Features
- Ultra-low-power consumption down to 380 nA at 1.6 Hz
- Independent IO supply and supply voltage compatible
- Two user-selectable full scales (±2g/±4g)
- High-speed I²C/SPI digital output interface
- 2 independent programmable interrupts
- Single data conversion on demand and self-test capability
- Embedded temperature sensor
- Dedicated internal engine for motion and acceleration detection (free-fall, motion/no-motion, wakeup, activity/inactivity, 6D/4D orientation)
Applications
- Car key applications (inclination/orientation detection)
- Motion-activated functions
- Gesture recognition
- Free-fall detection
- Smart power saving
Q & A
- What is the AIS2DW12TR used for? The AIS2DW12TR is used for various automotive applications, including car key inclination/orientation detection, motion-activated functions, gesture recognition, and free-fall detection.
- What are the sensing ranges of the AIS2DW12TR? The sensing ranges are ±2g and ±4g.
- What is the supply voltage range of the AIS2DW12TR? The supply voltage range is from 1.62 V to 3.6 V.
- What is the operating temperature range of the AIS2DW12TR? The operating temperature range is from -40°C to +85°C.
- What communication interfaces does the AIS2DW12TR support? It supports high-speed I²C and SPI digital output interfaces.
- Does the AIS2DW12TR have any power-saving features? Yes, it has ultra-low-power modes with consumption down to 380 nA at 1.6 Hz.
- What is the package style of the AIS2DW12TR? The package style is LGA-12.
- Is the AIS2DW12TR compliant with automotive standards? Yes, it is AEC-Q100 qualified.
- Does the AIS2DW12TR have an embedded FIFO buffer? Yes, it has a 32-level embedded FIFO buffer.
- What is the shock survivability of the AIS2DW12TR? It can survive up to 10000 g of shock.
