[pgf-tikz] circuitikz alignment

[Romano Giannetti]

Hello,

     there is no guarantee that the anchors of a component of circuitikz 
stay on a grid.

You can check for example my answers here:

https://tex.stackexchange.com/questions/681994/what-is-the-default-size-of-various-components-in-circuitikz/

https://tex.stackexchange.com/questions/634934/what-is-the-unit-of-width-and-height-in-circuitikz

The correct way to achieve what you are looking for is using the anchors 
and moving relatively to them


\begin{circuitikz}
\draw
   (1.5,-.5) node [op amp] (opamp) {}
   (opamp.-) ++(-0.5, 0) node[left]{A}
   to [short] (opamp.-) ;
\end{circuitikz}



-- 
Romano Giannetti http://www.rgtti.com/