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Chip Amps Amplifiers based on integrated circuits

TA7136AP SIL-7 mixing console.
TA7136AP SIL-7 mixing console.
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Old 5th September 2013, 03:55 PM   #1
Nissanhej is offline Nissanhej  Sweden
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Default TA7136AP SIL-7 mixing console.

Hey!

Got an TA7136AP as first stage gain in every channel.
Well, it seems this is an cool high gain chip, but i would like
something more gentle, have it in an audio mixer.

Found an adapter socket SIL-7 to 8-DIP.

I was thinking of using this to be able to change opamp according to
whom i recording with my mixer.

Would this work without any major modification in the rest of the pcb?
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Old 23rd November 2013, 12:22 AM   #2
Nissanhej is offline Nissanhej  Sweden
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Default killer of an adapter.

ta7136.jpg

ta7136-sch.jpg

This is it.
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Old 23rd November 2013, 01:51 AM   #3
nigelwright7557 is offline nigelwright7557  United Kingdom
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You might have problems with oscillation if the op amp has a lot of gain.
But you could compensate with small feedback capacitor.
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Old 23rd November 2013, 03:30 PM   #4
Nissanhej is offline Nissanhej  Sweden
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Thanks for the tip. The replacements will probably have alot higher gain so its
probably a good idea. Now i just gotta figure out the single replacement. The thing is.
Those old sil-7 7136 have a really nice clipping to them, they are wonderful on some instruments, like a Roland 70s synthisizer wich makes it roar in the low hz like a lion. But they are dreadful on other instruments. I wonder how those old opamps would withstand de-soldering? but hey, they are only 5euro it seems.

So single opamp replacement.. Something fat, i dont want it really clear and detalied. Some single Burr-Brown FET?

Cheers
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