AD8139 for Micpre

[Lukacs Sudar]

Was looking for an Opamp for a Micpre which is fully Differential, and found
the AD8139. I know i'ts a little bit noisy but you don't have to
re-balance.What are your thoughts about?

Lukacs Sudar

[Scott Dorsey]

Lukacs Sudar > wrote:
>Was looking for an Opamp for a Micpre which is fully Differential, and found
>the AD8139. I know i'ts a little bit noisy but you don't have to
>re-balance.What are your thoughts about?

It's a fun device and it's useful for a lot of things. It doesn't sound bad,
although I have mostly used it for control applications. It's not really
an op-amp. It is noisy, but you wouldn't use it on a front end anyway.

If you want to go fully differential, though, I think you are a lot better off
just going discrete and dumping the monolithic stuff entirely. That way you
can get just as much balancing or as little balancing as you need.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Scott Dorsey]

Lukacs Sudar > wrote:
>Was looking for an Opamp for a Micpre which is fully Differential, and found
>the AD8139. I know i'ts a little bit noisy but you don't have to
>re-balance.What are your thoughts about?

It's a fun device and it's useful for a lot of things. It doesn't sound bad,
although I have mostly used it for control applications. It's not really
an op-amp. It is noisy, but you wouldn't use it on a front end anyway.

If you want to go fully differential, though, I think you are a lot better off
just going discrete and dumping the monolithic stuff entirely. That way you
can get just as much balancing or as little balancing as you need.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."