[MonkeysAteMe]

I recenly bought a go-vibe along with an OPA627 from someone. The OPA2227 works perfectly in the Go-Vibe, but the OPA627 does not. After some research it seems the OPA627 is not a dual op-amp. Can it work in the Go-Vibe(version 3)?

Thank you.

 

[TURBO]

Quote:

Originally Posted by MonkeysAteMe /img/forum/go_quote.gif I recenly bought a go-vibe along with an OPA627 from someone. The OPA2227 works perfectly in the Go-Vibe, but the OPA627 does not. After some research it seems the OPA627 is not a dual op-amp. Can it work in the Go-Vibe(version 3)? Thank you.

Nope. It wont work, unless you mount them on a brown dog dual channel configuration adapter. 627 is a single channel opamp and OPA2227 is dual channel.

 

[MonkeysAteMe]

Ok, thank you. That's what I was afraid of.

 

[majkel]

You can try OPA2107. It's also manufactured in Difet technology like OPA627/637's, and it's dual. OPA2227 is so dull sounding that whatever you replace it for, will be better.

AD8066, AD8620, LM6172 (good luck here!)

 

[majkel]

If we're going high current, AD8397 is SOIC and dual, 310mA peak per channel. Not easy to be beaten. Power supply voltage range: 3~24V.

 

[MisterX]

Quote:

You can try OPA2107.

The following image was ripped from the OPA2107 datasheet.

See a problem there?

 

[zeppelin2]

Hey Marshall,

What would one expect to happen if you DID use the OPA2107 in a Go-Vibe? I'm just curious because it's what I normally use and it sounds fine to me

(My vibe is a 2nd generation one from way back I believe).

 

[holland]

It would be fine until your battery runs below 9V. 9V batteries (alkaline) operate above 9V when new, as does NiMH when fully charged. You won't be maximizing your batteries. If you run on AC only, it should be fine but you're better off with higher voltage for the OPA2107.

It's not exactly the best opamp for a single 9V battery configuration.