[dcrane]

I purchased 3 AD8610 opamps on browndog adapters for my PPA and am trying to figure out how to put them in - which way is "up". Does it matter? If so, what is the correct orientation?

 

[kyrie]

Oh yes, it does definitely matter. If you put it in the wrong way, then you'll get a compressed scratchy sound and if you leave it on for too long it'll ruin the op-amp. But anyway.
The "Browndog" letter should be facing opposite the "PPA" letters on the board. I think.

 

[Megaptera]

One of the pinholes on the adapter has a square outline, not a circle. That's pin 1. I leave it as an exercise for the reader to determine where pin 1 goes based on the schematic, board art, and AD8610 datasheet, cause I don't remember off the top of my head

By the way, orientation on the buffers is important too. They're easier, since you're probably using the DIP-8 package, not surface mount like the AD8610s are -- just look for the notch and match it to the notch on the board. They are not all going in the same direction.

As a side note, if you haven't installed sockets, I really recommend it. Makes installing/removing opamps and buffers much easier.

 

[bpribadi]

I Hope this picture help:

Pin 1 for AD8620 is marked clearly, but for AD8610, you might need torch light to see the small mark on the bottom left of the IC (according to my pics), anyway just follow what you see on the 8620, it is the same for AD8610.

Probably this pic is better to see the small outline below the white mark:

Try AD8066, it sounds better with amazing bass. Check my small review:
http://www.sgheadphones.net/index.php?showtopic=2628

 

[MisterX]

Install them so they match the image below.

 

[xtreme4099]

Quote:

Originally Posted by bpribadi Try AD8066, it sounds better with amazing bass. Check my small review: http://www.sgheadphones.net/index.php?showtopic=2628

its the ad8065 for the ppa, the 8066 is the dual version.

 

[dcrane]

thanks