STMicroelectronics

AIS326DQ

AIS326DQ Description

The AIS326DQ from STMicroelectronics is a 3-axis digital accelerometer designed for high-precision motion sensing in demanding applications. It operates within a ±2g to ±6g acceleration range with adjustable sensitivity (1024 LSB/g at ±2g, 340 LSB/g at ±6g), ensuring accurate measurement across varying dynamic conditions. The device supports I2C and SPI digital interfaces, enabling seamless integration with microcontrollers and embedded systems. With a 3V to 3.6V supply voltage and 10Hz to 640Hz configurable bandwidth, it balances power efficiency and performance. Packaged in a 28-QFN (Quad Flat No-Lead) tray, the AIS326DQ is RoHS3 compliant and adheres to REACH and EAR99 regulations, making it suitable for global markets.

AIS326DQ Features

• Digital Output: I2C/SPI interfaces for flexible communication.
• Selectable Sensitivity: Adjustable full-scale range (±2g/±6g) for optimized resolution.
• Programmable Bandwidth: Configurable from 10Hz to 640Hz to match application requirements.
• Low Power Consumption: Operates at 3V–3.6V, ideal for battery-powered devices.
• High Robustness: Surface-mount design with MSL 3 (168 hours) moisture sensitivity.
• Tri-Axis Detection: Simultaneous X, Y, Z-axis acceleration measurement.
• Obsolete Status: May require alternative sourcing for new designs, but remains reliable for legacy systems.

AIS326DQ Applications

The AIS326DQ excels in industrial, automotive, and consumer electronics where precise motion detection is critical:

• Industrial Equipment: Vibration monitoring, tilt sensing, and shock detection in machinery.
• Automotive Systems: Vehicle stability control, impact sensing, and telematics.
• Consumer Electronics: Motion-activated user interfaces, gaming controllers, and wearable devices.
• IoT Devices: Low-power motion tracking for smart sensors and asset monitoring.

Conclusion of AIS326DQ

The AIS326DQ offers a robust combination of programmable sensitivity, digital interfaces, and tri-axis accuracy, making it a versatile choice for motion-sensing applications. While marked as obsolete, its performance and compliance with environmental standards (RoHS3, REACH) ensure reliability for existing deployments. Engineers seeking alternatives should evaluate newer STMicroelectronics accelerometers, but the AIS326DQ remains a proven solution for legacy designs requiring high-resolution motion detection.