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GENERAL DESCRIPTION

The ADIS16228 iSensor? is a complete vibration sensing system that combines triaxial acceleration sensing with advanced time domain and frequency domain signal processing. Time domain signal processing includes a programmable decimation filter and selectable windowing function. Frequency domain processing includes a 512-point, real-valued FFT for each axis, along with FFT averaging, which reduces the noise floor variation for finer resolution. The 14-record FFT storage system offers users the ability to track changes over time and capture FFTs with multiple decimation filter settings.

FEATURES

Frequency domain triaxial vibration sensor

Flat frequency response up to 5 kHz

Digital acceleration data, ±18 g measurement range

Digital range settings: 0 g to 1 g/5 g/10 g/20 g

Real-time sample mode: 20.48 kSPS, single-axis

Capture sample modes: 20.48 kSPS, three axes

Trigger modes: SPI, timer, external

Programmable decimation filter, 11 rate settings

Multirecord capture for selected filter settings

Manual capture mode for time domain data collection

FFT, 512-point, real valued, all three axes (x, y, z)

3 windowing options: rectangular, Hanning, flat top

Programmable FFT averaging: up to 255 averages

Storage: 14 FFT records on all three axes (x, y, z)

Programmable alarms, 6 spectral bands

2-level settings for warning and fault definition

Adjustable response delay to reduce false alarms

Internal self-test with status flags

Digital temperature and power supply measurements

2 auxiliary digital I/Os

SPI-compatible serial interface

Identification registers: serial number, device ID, user ID

Single-supply operation: 3.0 V to 3.6 V

Operating temperature range: ?40°C to +125°C

15 mm × 24 mm × 15 mm aluminum package, flex connector

APPLICATIONS

Vibration analysis

Condition monitoring

Machine health

Instrumentation, diagnostics

Safety shutoff sensing