3 ms·

Has there been any updates on ADC technology? What does SKA/CERN use?

• the__alchemist 1y ago
  Curious too. The part in question has been around for a while.
  • lokimedes 1y ago
    My lazy answer is to search for ADC on https://cds.cern.ch https://cds.cern.ch
• willis936 1y ago
  Well, if you're trying to measure DC extremely accurately the old stuff is still golden. Multi-slope is the gold standard and no one will sell you one. Delta-sigma get most of the way there. https://youtu.be/upTgM_S5rAQ https://youtu.be/upTgM_S5rAQ And if you want to see CERN's multimeter, check this out. https://youtu.be/D28uSzCs7-k https://youtu.be/D28uSzCs7-k Marco Reps is a treasure.
  • shadowpho 1y ago
    >Multi-slope is the gold standard and no one will sell you one. Why not?
    • willis936 1y ago
      The delta-sigma is conceptually very similar and gets you most of the way there for DC performance, but can be used for sample rates in excess of 100 kSamp/s. Multi-slopes also need large passive values that make an integrated solution impossible. Keysight will still sell you their 3458A. Also, the AD7177-2 exists. That might be evidence enough for delta-sigma's victory.