ADIS16220:  Programmable Digital Vibration Sensor

The ADIS16220 iSensor® is a digital vibration sensor that combines industry-leading iMEMS® sensing technology with signal processing, data capture, and a convenient serial peripheral interface (SPI). The SPI and data buffer structure provide convenient access to wide-bandwidth sensor data. The 22 kHz sensor resonance and 100.2 kSPS sample rate provide adequate response for most machine-health applications. The averaging/ decimating filter provides optimization controls for lower bandwidth applications.

An internal clock drives the data sampling system, which fills the buffer memory for user access. The data capture function has three different trigger modes. The automatic data collection allows for periodic wake-up and capture, based on a programmable duty cycle. The manual data capture mode allows the user to initiate a data capture, providing power and read-rate optimization. The event capture mode continuously updates the buffers and monitors them for a preset trigger condition. This mode captures pre-event data and post-event data and produces an alarm indicator for driving an interrupt.

The ADIS16220 also offers a digital temperature sensor, digital power supply measurements, and peak output capture.

The ADIS16220 comes in a 9.2 mm × 9.2 mm × 3.9 mm LGA package that meets the Pb-free solder reflow profile require- ments per JEDEC J-STD-020 and has an extended operating temperature range of −40°C to +125°C.

Applications

• Vibration analysis
• Shock detection and event capture
• Condition monitoring
• Machine health
• Instrumentation, diagnostics
• Safety, shut-off sensing
• Security sensing, tamper detection