Re: OPA655 unity gain buffer circuit v. noisy

From: PaulCsouls (paulcsouls_at_worldnet.att.net)
Date: 07/24/04 

Date: Sat, 24 Jul 2004 01:53:45 GMT

On Wed, 21 Jul 2004 16:17:26 GMT, "Colin" <no spam
ciswift@hotmail.com> wrote:

>Hi,
>
> I've assembled a unity buffer circuit with an OPA655P op amp as per page 9
>of the data *** and for some reason find the circuit to be incredibly
>noisy - lots of hf noise! the circuits using gain I've made with this chip
>on this board are fine which makes it more puzzling. Decoupling is the same
>for all devices. Any Ideas as to what's happening?
>
>Thanks
>
>Colin
>

The OPA655 has been discontinued by TI, so I wouldn't design with it.

Paul

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