Programmable Digital Vibration Sensor
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An internal clock drives the data sampling system, which supports three different data collection modes. The automatic data collection allow for periodic wake-up and capture, based on a programmable duty cycle. The manual data capture mode requires user input to update the data buffers, providing power/read-rate optimization. The event capture mode continuously updates the buffers and monitors them for a preset trigger condition, which preserves pre/post event data. A common serial interface (SPI) and data buffer structure manage user access to sensor data. Three 1024 buffers capture data for user-driven reads over the SPI, which reduces the bit rate requirements on the port.
The ADIS16220 also offers a digital temperature sensor, digital power supply measurements, peak output tracking, and a programmable condition monitoring function, which produces an alarm indicator signal for driving system level interrupts. Two auxiliary analog-to-digital input channels provide interface to additional analog output accelerometers, which simplifies the process of developing a tri-axis sensing system.
The ADIS16220 comes in a 9.2 mm × 9.2 mm × 3.9 mm LGA package that meets the Pb-free solder reflow profile requirements per JEDEC J-STD-020 and supports an extended operating temperature range of −40°C to +125°C.Applications
Safety, shut-off sensing
Security sensing, tamper detection