Safa_R
Newbie level 4

Hi all;
I recently used TL072 op amp in my desgn. This op amp is J-FET input and according to its datasheet, its input current should be in range of pA. However, I measure 1 to 8 mA current in both + and - pins of the IC. I really confused that how it can possible !!?
The design is a voltage-control current sink/source and attached to the post.
Can anyone help me?
I recently used TL072 op amp in my desgn. This op amp is J-FET input and according to its datasheet, its input current should be in range of pA. However, I measure 1 to 8 mA current in both + and - pins of the IC. I really confused that how it can possible !!?
The design is a voltage-control current sink/source and attached to the post.
Can anyone help me?