RE: As a rule ALL IC's should be decoupled

Posted by Wally (A) on May 17, 2009 at 11:46:13

In Reply to: RE: As a rule ALL IC's should be decoupled posted by Mushroom Soup on May 16, 2009 at 12:02:26:

I suppose in theory both rails will be shorted to ground by decoupling caps earlier on, but any inductance from the tracks to the point where the rail connects to the IC will mean that the decoupling will become less effective as frequency increases. I think the stability of the opamp circuit is also affected by capacitive negative feedback (through actual capacitors and stray capacitance). So I think some circuits and opamps will be much more affected than others.

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Follow Ups Full Thread

Topic - decoupling an LM4562 op amp - Wally 09:44:26 05/05/09 (16)

RE: decoupling an LM4562 op amp - Ric Schultz 15:31:48 05/07/09 (1)

RE: decoupling an LM4562 op amp - Wally 08:17:26 05/10/09 (0)

This might sound really strange, but... - reuben 07:15:41 05/07/09 (2)

RE: This might sound really strange, but... - Mushroom Soup 19:32:18 05/15/09 (0)

RE: This might sound really strange, but... - Wally 07:29:08 05/07/09 (0)

As a rule ALL IC's should be decoupled - tweakeng 17:31:06 05/05/09 (10)

RE: As a rule ALL IC's should be decoupled - Wally 01:02:21 05/06/09 (9)

RE: As a rule ALL IC's should be decoupled - Mushroom Soup 19:38:11 05/15/09 (3)

RE: As a rule ALL IC's should be decoupled - Wally 04:48:31 05/16/09 (2)

RE: As a rule ALL IC's should be decoupled - Mushroom Soup 12:02:26 05/16/09 (1)

RE: As a rule ALL IC's should be decoupled - Wally 11:46:13 05/17/09 (0)

RE: As a rule ALL IC's should be decoupled - Bom 04:04:19 05/07/09 (1)

RE: As a rule ALL IC's should be decoupled - Wally 05:11:32 05/07/09 (0)

There must be someone with experience of decoupling this chip... - Wally 02:01:16 05/07/09 (2)

RE: There must be someone with experience of decoupling this chip... - peranders 01:45:39 05/09/09 (1)

RE: There must be someone with experience of decoupling this chip... - Wally 08:04:09 05/10/09 (0)

Follow Ups

RE: As a rule ALL IC's should be decoupled - Wally 11:46:13 05/17/09 (0)

RE: As a rule ALL IC's should be decoupled

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