Overview
The ADXL213AE-REEL, produced by Analog Devices Inc., is a low-cost, low-power, complete dual-axis accelerometer. It features signal-conditioned, duty cycle modulated outputs on a single monolithic IC. This accelerometer measures acceleration with a full-scale range of ±1.2 g (typical) and can detect both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity). The device is designed for high zero g bias stability and tight sensitivity stability, making it suitable for various precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Axis | X, Y | |
| Type | Digital | |
| Acceleration Range | ±1.2 g | |
| Bandwidth | 1 Hz ~ 2.5 kHz | |
| Output Type | PWM (Pulse Width Modulation) | |
| Sensitivity | 30%/g (nominal) | |
| Supply Voltage | 3 V ~ 6 V | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Package / Case | 8-CLCC (5mm x 5mm x 2mm) | |
| Mounting Type | Surface Mount | |
| Supply Current | 700 μA (typical at 5 V) |
Key Features
- Adjustable Bandwidth: The bandwidth can be adjusted using capacitors at the X FILT and Y FILT pins, allowing for bandwidths from 0.5 Hz to 250 Hz.
- Low Power Consumption: The device operates with a low supply current, typically 700 μA at 5 V.
- High Stability: Innovative design techniques ensure high zero g bias stability (better than 0.25 mg/°C) and tight sensitivity stability (better than 50 ppm/°C).
- Digital Outputs: The outputs are digital signals whose duty cycles are proportional to acceleration, allowing direct measurement by a microcontroller without an A/D converter or glue logic.
- Single-Supply Operation: The ADXL213AE-REEL operates on a single supply voltage from 3 V to 6 V.
- High Accuracy Tilt Sensing: The device is highly sensitive to tilt, using the force of gravity as an input vector to determine the orientation of an object in space.
Applications
- Automotive Tilt Alarms: Used in automotive systems for tilt detection and alarm triggering.
- Data Projectors: Helps in maintaining the level and orientation of data projectors.
- Navigation Systems: Utilized in navigation systems for precise orientation and movement detection.
- Platform Stabilization/Leveling: Used to stabilize and level platforms in various industrial and consumer applications.
- Alarms and Motion Detectors: Employed in alarm systems and motion detectors due to its high sensitivity to movement and orientation changes.
Q & A
- What is the full-scale acceleration range of the ADXL213AE-REEL?
The full-scale acceleration range is ±1.2 g (typical).
- How can the bandwidth of the ADXL213AE-REEL be adjusted?
The bandwidth can be adjusted using capacitors at the X FILT and Y FILT pins, allowing for bandwidths from 0.5 Hz to 250 Hz.
- What type of output does the ADXL213AE-REEL provide?
The device provides digital outputs in the form of pulse width modulation (PWM).
- What is the typical supply current of the ADXL213AE-REEL?
The typical supply current is 700 μA at 5 V.
- What is the operating temperature range of the ADXL213AE-REEL?
The operating temperature range is -40°C to 85°C (TA).
- How does the ADXL213AE-REEL measure acceleration?
The device measures acceleration with duty cycle modulated outputs that are proportional to acceleration, allowing direct measurement by a microcontroller.
- What are some common applications of the ADXL213AE-REEL?
Common applications include automotive tilt alarms, data projectors, navigation systems, platform stabilization/leveling, and alarms and motion detectors.
- What is the package type of the ADXL213AE-REEL?
The device is packaged in an 8-CLCC (5mm x 5mm x 2mm) package.
- Is the ADXL213AE-REEL qualified for automotive applications?
Yes, the ADXL213AE-REEL is qualified for automotive applications.
- How does the sensitivity of the ADXL213AE-REEL vary with supply voltage?
The sensitivity varies with supply voltage; at VS = 3 V, the sensitivity is typically 28%/g.
