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ADS1258 INN & INP

Todd Anderson78572
Guru 14640 points
Other Parts Discussed in Thread: ADS1258

Can these pins be left floating when using the ADS1258 in single-ended mode?

  • 0
    TI__Guru* 98025 points
    Todd,


    Generally, I don't like to leave any floating inputs on a board. In this case, there are likely going to be small leakage currents that may pull the input one way or another. The device is on a junction isolated process, so even the mux will some leakage like a reverse bias diode.

    It would be better to tie off unused inputs. I'll refer you to this post that I found on the ADS1258:

    e2e.ti.com/.../364536


    Joseph Wu