Overview
The AD22281-R2 is a single-axis accelerometer produced by Analog Devices Inc. It is part of the ADXL78 series, which offers a complete acceleration measurement system on a single monolithic IC. This device is designed for low power consumption and features signal-conditioned voltage outputs. The AD22281-R2 is available in various output full-scale ranges, making it versatile for different application requirements.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Full-Scale Range | IOUT ≤ ±100 μA | 70 | - | 70 | g |
| Nonlinearity | - | 0.2 | 2 | 2 | % |
| Package Alignment Error | - | 1 | - | 1 | Degree |
| Cross-Axis Sensitivity | - | -5 | - | 5 | % |
| Resonant Frequency | - | 24 | - | 24 | kHz |
| Sensitivity, Ratiometric (Over Temperature) | VDD = 5 V, 100 Hz | 25.65 | 27 | 28.35 | mV/g |
| Zero-g Output Voltage (Over Temperature) | VOUT − VDD/2, VDD = 5 V | -150 | - | 150 | mV |
| Noise Density | 10 Hz − 400 Hz, 5 V | 1.8 | 3 | 3.5 | mg/√Hz |
| Clock Noise | - | 5 | - | 5 | mV p-p |
| Frequency Response | -3 dB Frequency | 360 | 400 | 440 | Hz |
| Operating Temperature | - | -40 | - | 105 | °C |
Key Features
- Complete acceleration measurement system on a single monolithic IC.
- Available in ±35 g, ±50 g, or ±70 g output full-scale ranges.
- Full differential sensor and circuitry for high resistance to EMI/RFI.
- Environmentally robust packaging.
- Complete mechanical and electrical self-test on digital command.
- Output ratiometric to supply voltage.
- Low power consumption.
- Improved self-test functionality with excellent transient response and high-speed switching capabilities.
Applications
The AD22281-R2 is suitable for a variety of applications, including automotive systems, industrial automation, and consumer electronics. Its robust design and wide operating temperature range make it particularly useful in harsh environments. It is also used in vibration monitoring, motion detection, and other applications requiring precise acceleration measurements.
Q & A
- What is the output full-scale range of the AD22281-R2?
The AD22281-R2 has an output full-scale range of ±70 g. - What is the operating temperature range of the AD22281-R2?
The operating temperature range is from -40°C to +105°C. - Does the AD22281-R2 have self-test capabilities?
Yes, it has complete mechanical and electrical self-test on digital command. - What is the sensitivity of the AD22281-R2?
The sensitivity is ratiometric to the supply voltage, with a typical value of 27 mV/g at 5 V. - Is the AD22281-R2 resistant to EMI/RFI?
Yes, it features full differential sensor and circuitry for high resistance to EMI/RFI. - What are the typical applications of the AD22281-R2?
It is used in automotive systems, industrial automation, consumer electronics, vibration monitoring, and motion detection. - What is the resonant frequency of the AD22281-R2?
The resonant frequency is 24 kHz. - How does the self-test function work on the AD22281-R2?
The self-test function applies an electrostatic force to the sensor, causing a step function force and verifying the operation of the accelerometer. - What is the noise density of the AD22281-R2?
The noise density is typically 3 mg/√Hz over the 10 Hz to 400 Hz range. - Is the AD22281-R2 suitable for harsh environments?
Yes, it has environmentally robust packaging and a wide operating temperature range.
