Overview
The AIS328DQTR is a high-performance, ultra-low-power 3-axis linear accelerometer produced by STMicroelectronics. This device is designed to meet the stringent requirements of automotive and industrial applications, featuring a digital serial interface with SPI and I²C compatibility. The AIS328DQTR is part of the AIS328DQ series, known for its advanced power-saving capabilities and robust performance across a wide temperature range.
Key Specifications
| Sensing Range | ±2g / ±4g / ±8g |
|---|---|
| Sensing Axis | X-Y-Z |
| Supply Voltage | 2.4V to 3.6V |
| Supply Current | 450µA (typical) |
| Operating Temperature Range | -40°C to +105°C |
| Package Style | QFN-24 (4x4x1.8 mm) |
| Mounting Method | Surface Mount |
| Data Output Interface | SPI / I²C |
| Data Output Resolution | 16-bit |
| Interrupt Generators | 2 independent programmable interrupt generators |
| Self-Test Capability | Embedded self-test |
| Shock Survivability | Up to 10000 g |
Key Features
- AEC-Q100 qualification for automotive applications
- Wide supply voltage range: 2.4 V to 3.6 V
- Low voltage compatible IOs: 1.8 V
- Ultra-low-power mode consumption: down to 10 µA
- Dynamically selectable full scales: ±2g/±4g/±8g
- SPI / I²C digital output interface
- 16-bit data output
- 2 independent programmable interrupt generators
- System sleep/wakeup function
- Extended temperature range: -40 °C to 105 °C
- Embedded self-test capability
- High shock survivability: up to 10000 g
- ECOPACK, RoHS, and “Green” compliant
Applications
The AIS328DQTR is primarily designed for automotive and industrial applications. It is suitable for use in various scenarios such as:
- Automotive safety systems (e.g., airbag deployment, anti-lock braking systems)
- Industrial automation and control systems
- Vibration monitoring and analysis
- Position sensing and orientation detection
- Other applications requiring high-precision acceleration measurement
Q & A
- What is the sensing range of the AIS328DQTR?
The AIS328DQTR has a dynamically selectable full scale of ±2g, ±4g, and ±8g.
- What are the supported communication interfaces?
The device supports both SPI and I²C digital output interfaces.
- What is the operating temperature range of the AIS328DQTR?
The device operates over a temperature range from -40°C to +105°C.
- What is the typical supply current of the AIS328DQTR?
The typical supply current is 450µA.
- Does the AIS328DQTR have self-test capability?
Yes, the device features an embedded self-test capability.
- What is the package style and mounting method of the AIS328DQTR?
The device is packaged in a QFN-24 (4x4x1.8 mm) and is surface mountable.
- Is the AIS328DQTR compliant with automotive standards?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the shock survivability of the AIS328DQTR?
The device can survive shocks up to 10000 g.
- Is the AIS328DQTR environmentally friendly?
Yes, it is ECOPACK, RoHS, and “Green” compliant.
- What are the power-saving features of the AIS328DQTR?
The device features ultra-low-power operational modes, including a consumption as low as 10 µA in certain modes, and system sleep/wakeup functions.
