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The KAD/ADC/106 is used to condition and digitize up to eight differential-ended analog channels. Six of these channels have a constant current source and high-pass (DC-reject) filter for use with ICP accelerometer devices.
At the heart of the KAD/ADC/106 is a hard-wired state machine that oversamples all channels at a rate between 96 ksps and 192 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 (isochronously). Thus, when several channels are sampled at different sampling rates, at the start of an acquisition cycle all channels are aligned.
Features
- Six accelerometer input channels with DC-reject and two differential ended input channels
- Accelerometer input programmable range (±1V, ±10V)
- Differential ended input programmable range (±10mV to ±10V)
- Constant current source excitation on each accelerometer input channel (3.6mA typical)
- Short on any channel does not affect others
- 16 bit simultaneous sampling on each channel
- Up to 24k samples per second per channel
- Up to 6 kHz Bandwidth (AAAF filter)
Applications
- Accelerometer signal conditioning and digitalization
- Suitable for Integrated Circuit Piezoelectric (ICP), Isotron, Piezotron, and Deltatron sensors
- Differential voltage measurement
KAD/ADC/106