Overview
The LIS3L02AQ3TR is a low-power, 3-axis linear capacitive accelerometer produced by STMicroelectronics. This device is part of a family of inertial sensors designed for various applications requiring precise acceleration measurements. The LIS3L02AQ3TR includes a sensing element and an IC interface, which converts the mechanical acceleration into an analog signal. Although this product is now obsolete, it was widely used in mobile terminals, gaming and virtual reality input devices, free-fall detection, antitheft systems, and inertial navigation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (Vdd) | 2.4 | 3.3 | 3.6 | V |
| Supply Current (Idd) | 0.85 | 1.5 | - | mA |
| Supply Current in Power Down Mode (IddPdn) | 2 | - | 5 | µA |
| Full Scale Range | ±2g / ±6g | - | - | - |
| Bandwidth | - | - | 1.5 kHz | - |
| Output Impedance (Rout) | 80 | 110 | 140 | kΩ |
| Operating Temperature Range | -40 | - | +85 | °C |
| Package Type | - | - | QFN-44 | - |
Key Features
- Low Power Consumption: The device operates with a low supply current, making it suitable for battery-powered applications.
- User Selectable Full Scale: The LIS3L02AQ3TR allows for user selection of full-scale ranges of ±2g or ±6g.
- High Resolution and Bandwidth: It offers better than 0.5mg resolution over a 100Hz bandwidth and a maximum bandwidth of 1.5 kHz.
- Embedded Self Test and Power Down: Features include self-test capability and power-down mode for reduced power consumption.
- High Shock Survivability: The device is designed to withstand high mechanical shocks.
- ECO-PACK Compliant: The package is environmentally friendly and compliant with ECO-PACK standards.
- Adjustable Bandwidth and Low Pass Filter: The bandwidth can be adjusted using external capacitors, and low-pass filtering can be implemented for antialiasing and noise reduction.
Applications
- Mobile Terminals: Used in smartphones and other mobile devices for motion sensing and gesture recognition.
- Gaming and Virtual Reality: Employed in gaming controllers and VR devices to enhance user experience.
- Free-Fall Detection: Utilized in data protection systems to detect free-fall events and protect data.
- Antitheft Systems and Inertial Navigation: Used in various security and navigation systems.
- Appliance and Robotics: Integrated into appliances and robotic systems for motion sensing and control.
Q & A
- What is the supply voltage range for the LIS3L02AQ3TR?
The supply voltage range is from 2.4V to 3.6V.
- What are the full-scale ranges available for this accelerometer?
The device offers user-selectable full-scale ranges of ±2g and ±6g.
- How does the self-test feature work?
The self-test feature allows checking the mechanical and electrical signal path of the sensor by applying a logic signal to the ST pin.
- What is the operating temperature range of the LIS3L02AQ3TR?
The device operates over a temperature range of -40°C to +85°C).
- Can the bandwidth of the LIS3L02AQ3TR be adjusted?
Yes, the bandwidth can be adjusted using external capacitors to implement low-pass filtering).
- What is the package type of the LIS3L02AQ3TR?
The device is packaged in a QFN-44 package).
- Is the LIS3L02AQ3TR ECO-PACK compliant?
Yes, the device is ECO-PACK compliant, making it environmentally friendly).
- How does the power-down mode work?
The power-down mode is activated by setting the PD pin to logic 1, significantly reducing the supply current).
- What is the resolution of the LIS3L02AQ3TR?
The device offers better than 0.5mg resolution over a 100Hz bandwidth).
- Is the LIS3L02AQ3TR sensitive to mechanical shocks?
No, the device is designed to withstand high mechanical shocks).
