Curtiss-Wright Defense Solutions

KAD/ADC/120 Full-bridge ADC (voltage excitation, 3 kHz b/w) - 12 channels at 12 ksps

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The KAD/ADC/120 is used to condition and digitize up to twelve D/E analog channels.

At the heart of the KAD/ADC/120 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. Thus, when several channels are sampled at different sampling rates, at the start of an acquisition cycle all channels are aligned.

The KAD/ADC/120 is similar to the KAD/ADC/118 but does not support channel balancing. The KAD/ADC/120 is available with three different input ranges (±10V, ±1V, ±100mV). The input range must be specified when ordering.

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KAD/ADC/120 Product Sheet

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Features

12 full or ½-bridge, potentiometer or Differential-ended (D/E) input channels
Simultaneous sampling 16-bit A/D for each channel
High accuracy
Programmable input range per channel
Programmable excitation per group of three channels
8th order Butterworth filter with programmable cutoff frequency per channel
Short to ground on any channel does not affect others
Up to 12,000 samples per second per channel
Up to 3 kHz bandwidth
Bipolar excitation before instrumentation amplifier

Applications

Strain gage signal conditioning and digitalization
Differential voltage measurement
Strain gage measurement

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