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Let's Get Technical => Schematics & Modifications (mods) => Topic started by: kissfan113 on May 24, 2023, 09:26:43 AM

Title: Replacement for op amp listed in mp-1 noise mod
Post by: kissfan113 on May 24, 2023, 09:26:43 AM

I was checking into parts for the noise mod for my mp-1s today and see that the TL072IN chip listed in the mod is obsolete and unavailable, what would be a suitable replacement for this ic?

Title: Re: Replacement for op amp listed in mp-1 noise mod
Post by: MarshallJMP on May 26, 2023, 11:50:16 PM

What revision of the noise mod did you look at?

Title: Re: Replacement for op amp listed in mp-1 noise mod
Post by: kissfan113 on May 31, 2023, 07:44:42 AM

I think it’s version 1 ca.2003

Title: Re: Replacement for op amp listed in mp-1 noise mod
Post by: MarshallJMP on May 31, 2023, 02:18:22 PM

Ok that's an old one, get a OPA2134AP for U4, don't change U9. Now the TL072 is not obsolete at all but the OPA is better.