KAD/ADC/116 12 channel Accelerometer ADC

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The KAD/ADC/116 is used to condition and digitize up to 12 accelerometer-type input channels. Each of these channels has a constant current source and AC coupled (DC-reject) inputs for use with integrated charge-amp piezoelectric accelerometer devices.

At the heart of the KAD/ADC/116 is a hard-wired state machine that over-samples all channels at a rate between 48 ksps and 96 ksps and digitally filters any noise above the user-programmable cutoff frequency. This is achieved using cascaded, half-band, Finite-Impulse-Response (FIR) filters followed by an 8th order Butterworth IIR filter with a default cutoff point set at one-quarter of the sampling frequency (fc = fs/4).

All signals are sampled simultaneously. This means that even when several channels are sampled at different sampling rates, the sample at the start of the acquisition will always be synchronized.

Features

  • 12 accelerometer input channels with DC-reject
  • Ordering Input range (1V, 10V)
  • Accuracy 0.4% FSR max. at 10Hz
  • Constant current source excitation on each channel (3.6mA typical)
  • Short on any channel does not affect others
  • 16-bit simultaneous sampling on each channel
  • Up to 12 k samples per second per channel
  • Up to 3 kHz Bandwidth (AAAF filter)

Applications

  • Accelerometer signal conditioning and digitalization
  • Suitable for ICP, Isotron, Piezotron, and Deltatron sensors
  • AC coupled voltage measurement
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KAD/ADC/116 12 channel Accelerometer ADC

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