AD8620 Type Question

[needlz]

I just got in a few AD8620s from another source and they are marked differently from the others I have. One is labeled with A242 under the AD8620 and the others with A421. Do these markings denote a type difference and if so is there a difference in performance?

thanks.

 

[Upupa Epops]

This is marking of production seria, nothing more .

 

[needlz]

That's what I figured but the chip graphics were completely different so I wanted to be sure.

thanks.