Overview
The AIS328DQ, manufactured by STMicroelectronics, is an ultra-low power, high-performance 3-axis linear accelerometer designed for automotive applications. It features a digital serial interface with both SPI and I²C compatible outputs. The device is housed in a small quad flat pack no-lead package (QFPN) with a 4x4 mm footprint, making it suitable for applications requiring miniaturization. It operates over an extended temperature range from -40 °C to 105 °C and is AEC-Q100 qualified, ensuring reliability in harsh automotive environments.
Key Specifications
| Parameter | Value |
|---|---|
| Sensing Range | ±2g, ±4g, ±8g |
| Sensing Axis | X-Y-Z |
| Supply Voltage | 2.4 V to 3.6 V |
| Supply Current | 450 µA (typical) |
| Operating Temperature Range | -40 °C to 105 °C |
| Package Type | QFPN 24L 4x4x1.8 mm |
| Mounting Method | Surface Mount |
| Digital Output Interface | SPI / I²C |
| Data Output Resolution | 16-bit |
| Output Data Rate | 0.5 Hz to 1 kHz |
| Low-Power Mode Consumption | Down to 10 µA |
| Shock Survivability | Up to 10000 g |
Key Features
- AEC-Q100 qualification for automotive reliability
- 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 and I²C digital output interfaces
- 16-bit data output
- 2 independent programmable interrupt generators
- System sleep/wakeup function
- Embedded self-test capability
- High shock survivability: up to 10000 g
- ECOPACK, RoHS, and “Green” compliant
Applications
- Telematics and black boxes
- In-dash car navigation
- Tilt / inclination measurement
- Anti-theft devices
- Intelligent power saving
- Impact recognition and logging
- Vibration monitoring and compensation
- Motion-activated functions
Q & A
- What is the AIS328DQ?
The AIS328DQ is an ultra-low power, high-performance 3-axis linear accelerometer designed for automotive applications.
- What are the sensing ranges of the AIS328DQ?
The AIS328DQ has dynamically selectable full scales of ±2g, ±4g, and ±8g.
- What are the communication interfaces available on the AIS328DQ?
The device supports both SPI and I²C digital output interfaces.
- What is the operating temperature range of the AIS328DQ?
The device operates over a temperature range from -40 °C to 105 °C.
- Is the AIS328DQ AEC-Q100 qualified?
Yes, the AIS328DQ is AEC-Q100 qualified, ensuring reliability in automotive applications.
- What is the power consumption in ultra-low-power mode?
The device consumes down to 10 µA in ultra-low-power mode.
- Does the AIS328DQ have interrupt generators?
Yes, it has 2 independent programmable interrupt generators.
- Is the AIS328DQ environmentally friendly?
Yes, the AIS328DQ is ECOPACK, RoHS, and “Green” compliant.
- What is the package type of the AIS328DQ?
The device is housed in a QFPN 24L 4x4x1.8 mm package.
- Can the AIS328DQ perform self-tests?
Yes, the AIS328DQ has an embedded self-test capability.
