¿ªÔÆÌåÓý

  1. LTspice
  2. Messages
Single Messages Topics Expanded Polls

Re: Problem of plotting (TI) log112 curve (Vo vs. I1/I2) (log112 model in file folder)

 


mmm....

I think the equation in the datasheet "(TI) log112" could possibly be wrong, there is NOT "negative" relation between Vlogout & Vo3.
But the simulation shows they are "negative", possibly in the "k" factor.

"VLOGOUT = (0.5V)LOG (I1/I2)"
"VO3 = K (0.5V)LOG (I1/I2), K = 1 + R2/R1"

Maybe someone should inform (TI) to fix this. If it's really wrong or there is a better explanation.

Best regards.
Join [email protected] to automatically receive all group messages.