themaccabee
Full Member level 4
Hi,
The output voltage of a simple differential opamp amplifier is being said as
Vo=Ad(Vb-Va)+Ac(Vb+Va)/2
We can definetly derive the differential mode gain using super position theorem.
But can somebody tell me how the common mode input signal is taken as (Vb+Va)/2??
Is it simply taken as the average of input siganls?\
Thanks & Regards
The output voltage of a simple differential opamp amplifier is being said as
Vo=Ad(Vb-Va)+Ac(Vb+Va)/2
We can definetly derive the differential mode gain using super position theorem.
But can somebody tell me how the common mode input signal is taken as (Vb+Va)/2??
Is it simply taken as the average of input siganls?\
Thanks & Regards