Overview
The AD22284-A-R2, produced by Analog Devices Inc., is a part of the ADXL278 series, which represents a fourth-generation surface micromachined accelerometer. This component is a low-power, complete dual-axis accelerometer with signal-conditioned voltage outputs integrated into a single monolithic IC. It is designed to measure both dynamic acceleration (vibration) and static acceleration (gravity) with high accuracy and reliability. The AD22284-A-R2 is particularly suited for automotive applications, including front and side impact airbag systems, due to its robust performance over a wide temperature range and its compatibility with automotive reliability standards.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Full-Scale Range | ±35 g | ±35 g | ±35 g | g |
| Nonlinearity | 0.2% | 2% | 2% | % |
| Package Alignment Error | 1° | 1° | 1° | ° |
| Sensor-to-Sensor Alignment Error | 0.1° | 0.1° | 0.1° | ° |
| Cross-Axis Sensitivity | -5% | +5% | % | |
| Resonant Frequency | 24 kHz | 24 kHz | 24 kHz | kHz |
| Sensitivity (Ratiometric) | 52.25 mV/g | 55 mV/g | 57.75 mV/g | mV/g |
| Supply Voltage | 3.5 V | 6 V | V | |
| Quiescent Supply Current | 2.2 µA | µA | ||
| Operating Temperature Range | -40°C | +105°C | °C | |
| Package Type | 8-Lead Ceramic Leadless Chip Carrier |
Key Features
- High Linearity and Accuracy: The AD22284-A-R2 features high linearity of full scale and tight sensitivity tolerance, ensuring accurate measurements.
- Low Power Consumption: This accelerometer is designed for low power consumption, making it suitable for battery-powered and energy-efficient applications.
- Full Differential Sensor and Circuitry: The device includes a fully differential sensor structure and circuit path, providing high resistance to EMI/RFI effects.
- Complete Mechanical and Electrical Self-Test: The component can perform a complete mechanical and electrical self-test on digital command, ensuring the integrity of the sensor.
- Single-Supply Operation: It operates on a single supply voltage, simplifying system design and reducing component count.
- Compatibility with Automotive Applications: Qualified for automotive use, it meets the quality and reliability requirements for such applications.
- Robust Packaging: Packaged in an 8-Lead Ceramic Leadless Chip Carrier, it is environmentally robust and suitable for demanding environments.
Applications
- Vibration Monitoring and Control: The AD22284-A-R2 is ideal for monitoring and controlling vibrations in various industrial and automotive settings.
- Vehicle Collision Sensing: It is widely used in airbag systems for front and side impact detection due to its high accuracy and reliability.
- Shock Detection: The accelerometer can detect shock and impact, making it useful in safety and monitoring systems.
- Automotive Safety Systems: It is qualified for automotive applications, including crash detection and safety systems.
- Industrial Automation: The device can be used in various industrial automation applications where precise acceleration measurement is required.
Q & A
- What is the full-scale range of the AD22284-A-R2 accelerometer?
The AD22284-A-R2 has a full-scale range of ±35 g/±35 g.
- What is the operating temperature range of the AD22284-A-R2?
The operating temperature range is from -40°C to +105°C.
- What type of package does the AD22284-A-R2 come in?
The AD22284-A-R2 is packaged in an 8-Lead Ceramic Leadless Chip Carrier.
- Is the AD22284-A-R2 suitable for automotive applications?
Yes, it is qualified for automotive applications and meets the necessary reliability standards.
- What is the sensitivity of the AD22284-A-R2?
The sensitivity is typically 55 mV/g.
- Does the AD22284-A-R2 support self-testing?
Yes, it can perform a complete mechanical and electrical self-test on digital command.
- What is the power consumption of the AD22284-A-R2?
The quiescent supply current is typically 2.2 µA.
- Is the AD22284-A-R2 resistant to EMI/RFI?
Yes, it features a fully differential sensor structure and circuit path, providing high resistance to EMI/RFI effects.
- What is the resonant frequency of the AD22284-A-R2?
The resonant frequency is 24 kHz.
- Can the AD22284-A-R2 measure both dynamic and static acceleration?
Yes, it can measure both dynamic acceleration (vibration) and static acceleration (gravity).
