Low Noise OpAmp (DG-1000, DG-100)

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Stefan Markowitz
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Joined: Tue Aug 25, 2020 1:30 pm

Low Noise OpAmp (DG-1000, DG-100)

Unread post by Stefan Markowitz »

Some years ago I replaced the input stage OpAmps in my DG Amps.
Instead of the TL-072 I installed an OP275 which reduced the noise level reasonable.
Now I tried some other OpAmps and found, that the NE5532AP produces even less noise in the input stage.
It is not a huge difference compared to the OP275, but if you already have substituted the TL-072, it is easy to put an NE5532AP into the socket and try it.
(I'm not sure whether the socket is installed from factory, I think I had to desolder the…login to view the rest of this post

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