AXN/ADC/405 Differential Ended ADC (5 kHz b/w) - 24 Analog Channels

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AXN/ADC/405 Differential Ended ADC (5 kHz b/w) - 24 Analog Channels
Product Sheet
Product Sheet

The AXN/ADC/405 is used to condition and digitize up to 24 analog differential-ended channels. Single-ended configurations are possible by enabling programmable pull-down resistors on any of the negative inputs.

Features

  • 24 differential ended input channels
  • Ordering input range from ±100 mV to ±40V
  • High accuracy (0.01% FSR typical)
  • High input resistance (>1 MΩ) when on/off for /100M, /1V, and /10V variants
  • 16-bit simultaneous sampling with three configurable output streams on each channel
  • User defined linearization and compensation for errors in the entire measurement chain

Applications

  • Differential voltage measurement
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AXN/ADC/405 Differential Ended ADC (5 kHz b/w) - 24 Analog Channels

The AXN/ADC/405 is used to condition and digitize up to 24 analog differential-ended channels. Single-ended configurations are possible by enabling programmable pull-down resistors on any of the negative inputs.

At the heart of the AXN/ADC/405 is a hard-wired state machine that oversamples all channels at a rate between 40 ksps and 80 ksps and digitally filters any noise above the user-programmable cutoff frequency. This is achieved using cascaded, 15-tap FIR filters with output rate decimation, followed by a final FIR or IIR filter. If IIR filtering mode is selected, the last digital filter in the filtering chain is an 8th or 16th order (selectable) Butterworth filter. If FIR mode is selected, the last digital filter in the filtering chain is a 49-tap Kaiser window, Beta 6 filter.

There are three independently configurable output streams per channel, allowing different sample rate, cutoff, and filter type to be selected for each output stream.

All signals are sampled simultaneously. When several channels are sampled at different sampling rates, at the start of an acquisition cycle all channels are aligned.

 

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