[sdiy] Do op amps need bypass caps?

[Chris McDowell]

Thanks for the responses! 

The comments I came across were yours, David :) 10uF and 100nF is exactly what I do usually as well, just after series schottky.

Cheers,
Chris

On Aug 19, 2014, at 4:27 AM, Steve Lenham <steve at bendentech.co.uk> wrote:

> On 19/08/2014 07:06, Chris McDowell wrote:
>> Hi guys,
>> 
>> I was taught to put 0.1uF-ish bypass caps on every IC, every time,
>> but recently have come across statements declaring that op amps in
>> the audio range and below don’t need them. Is this true? Is this
>> controversial? What’s the real scoop here?
> 
> Low-power devices with light loads probably don't need individual decoupling. However, I can say from personal experience that thirstier, gruntier parts like the NE5532 really do need a pair of local 0.1uFs to avoid instability. I suspect that the longer and twistier the power tracks to them are, the more true this becomes.
> 
> HTH,
> 
> Steve L.
> 
> 
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