LP324 Opamp question about datasheet

Discussion in 'General Electronics Chat' started by cevval, Jun 22, 2012.

  1. cevval

    Thread Starter Member

    Dec 6, 2011
    30
    0
    Please, see attached sheet which was taken from the datasheet of LP324. To calculate the Time for high output, I didn't understand the formula as marked on the attached sheet.
    Please help me.
    Thanks in advance.
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,421
    3,357
    R||Rf means the equivalent value of R in parallel with Rf.
     
  3. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    One note LP324. Was kind of a oddity even back in the days it was released. You may use the design. But choose another Opmap:eek: For your own sake
     
  4. upand_at_them

    Active Member

    May 15, 2010
    246
    29
    A||B = (AxB)/(A+B) = 1/(1/A + 1/B)

    Check out the DC tutorials on this very website, linked at the top of this page.
     
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