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Применения > > MEMS-Based Vibration Analyzer with Frequency Response Compensation

MEMS-Based Vibration Analyzer with Frequency Response Compensation (CN0303)

The circuit in Figure 1 offers a high linearity, low noise, wide-bandwidth vibration sensing solution. It is ideal for applications requiring a large dynamic range (±70 g, ±250 g or ±500 g) and a flat frequency response from dc to 22 kHz.

The circuit provides a low power solution suitable for bearing analysis, engine monitoring and shock detection.


The Analog Devices, Inc. proprietary fifth-generation iMEMs® process enables the ADXL001 accelerometer to provide dynamic range that extends from ±70 g to ±500 g in combination with 22 kHz of bandwidth.


The AD8606 is a precision, low noise, dual op amp used to create an analog bi-quad filter that flattens the output frequency response of the accelerometer.


The ADXL001 output voltage is converted into a digital word by the AD7476 low power, single channel 12-bit SAR ADC. is a precision, low noise, dual op amp used to create an analog bi-quad filter that flattens the output frequency response of the accelerometer.

Figure 1. Single Axis Vibration Analysis System (Simplified Schematic: Decoupling and All Connections Not Shown)

Возможности

  • High-g MEMS-based vibration analyzer
  • Flat response to 22kHz
  • 70g, 250g, and 500g range

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Схемы и диаграммы

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MEMS-Based Vibration Analyzer with Frequency Response Compensation  CN0303

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