Overview
The AD22285-REEL, produced by Analog Devices Inc., is a part of the ADXL278 series of dual-axis, high-g, iMEMS® accelerometers. This component is designed for high-performance acceleration measurement and is particularly suited for automotive applications, including front and side impact airbag systems. The ADXL278 series offers enhanced performance, lower cost, and robust environmental durability, making it a versatile solution for various industrial and automotive needs.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Full-Scale Range | IOUT ≤ ±100 µA | ±50 g | ±50 g | ±50 g | g |
| Nonlinearity | 0.2 | 2 | 2 | % | |
| Package Alignment Error | 1 | 1 | 1 | Degree | |
| Sensor-to-Sensor Alignment Error | 0.1 | 0.1 | 0.1 | Degree | |
| Cross-Axis Sensitivity | -5 | +5 | % | ||
| Resonant Frequency | 24 kHz | 24 kHz | 24 kHz | kHz | |
| Sensitivity, Ratiometric (Over Temperature) | VDD = 5 V, 100 Hz | 36.1 mV/g | 38 mV/g | 39.9 mV/g | mV/g |
| Operating Temperature Range | -40°C | +105°C | °C | ||
| Supply Voltage | 4.75 V | 5.25 V | V | ||
| Package Type | 8-Lead Ceramic Leadless Chip Carrier (LCC) |
Key Features
- Dual-Axis Acceleration Measurement: Measures acceleration in both X and Y axes.
- High Resistance to EMI/RFI: Fully differential sensor and circuitry provide high resistance to electromagnetic interference and radio-frequency interference.
- Self-Test Capability: Complete mechanical and electrical self-test on digital command.
- Temperature Stability: Accurate over the automotive temperature range of -40°C to +105°C.
- Low Power Consumption: Single-supply operation with low power requirements.
- High Linearity and Sensitivity: Tight sensitivity tolerance and low zero-g offset capability.
- Robust Packaging: Environmentally robust 8-lead ceramic LCC package.
- Bandwidth and Filtering: 400 Hz, 2-pole Bessel filter for signal conditioning.
Applications
- Automotive Airbag Systems: Designed for front and side impact airbag applications.
- Industrial Automation: Suitable for various industrial applications requiring precise acceleration measurement.
- Vibration Monitoring: Measures dynamic acceleration and vibration.
- Static Acceleration Measurement: Measures static acceleration due to gravity.
Q & A
- What is the AD22285-REEL used for?
The AD22285-REEL is used for dual-axis acceleration measurement, particularly in automotive airbag systems and other industrial applications.
- What is the operating temperature range of the AD22285-REEL?
The operating temperature range is -40°C to +105°C.
- What is the supply voltage range for the AD22285-REEL?
The supply voltage range is 4.75 V to 5.25 V.
- Does the AD22285-REEL have self-test capabilities?
Yes, it has a complete mechanical and electrical self-test feature that can be activated with a digital signal.
- What type of package does the AD22285-REEL come in?
The AD22285-REEL comes in an 8-lead ceramic Leadless Chip Carrier (LCC) package.
- Is the AD22285-REEL resistant to EMI/RFI?
Yes, it has a fully differential sensor and circuitry, providing high resistance to electromagnetic interference and radio-frequency interference.
- What is the sensitivity of the AD22285-REEL?
The sensitivity is approximately 38 mV/g.
- What is the bandwidth of the AD22285-REEL?
The bandwidth is up to 400 Hz with a 2-pole Bessel filter.
- Is the AD22285-REEL RoHS compliant?
Yes, the AD22285-REEL is RoHS compliant.
- What are some common applications of the AD22285-REEL besides automotive airbags?
Besides automotive airbags, it is used in industrial automation, vibration monitoring, and static acceleration measurement.
