Opamp decoupling scheme

Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Me wonders:
Take an existing circuit with various opamps (my active crossover).
Replacing TL072 with OPA2132 and NE5532 with LM4562.
Planning to improve opamp decoupling.
Is it adviseable, regarding the various positions op the chips regarding their existing local decoupling caps, and regarding the presence or absence of easy to reach ground planes nearby, to use different decoupling scheme from one chip to another?
In effect: is it adviseable to put a single 0,1uF high freq decoupling cap between V+ and V- on the chips where there's no good ground plane available nearby, and to put two 0,1uF (one from each feeding pin to ground) on the chips where the ground planes are near?
Or should all opamps in a given circuit be decoupled the exact same way, no matter where they sit on the board?

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Topic - Opamp decoupling scheme - KanedaK 01:25:15 07/27/18 (7)

RE: Opamp decoupling scheme - HoosierAudio 17:22:49 07/28/18 (0)

RE: Opamp decoupling scheme - madisonears 19:06:44 07/27/18 (5)

RE: Opamp decoupling scheme - Ugly 23:43:35 07/27/18 (4)

DM and CM Noise - 1973shovel 08:15:06 07/28/18 (3)

RE: DM and CM Noise - Ugly 09:58:48 07/28/18 (2)

Thank you (nt) - 1973shovel 16:14:35 07/31/18 (1)

RE: Thank you (nt) - Ugly 19:08:57 08/1/18 (0)

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