What opamp speed does?

[vanakaru]

I want to replace opamps in my DAC that use JRC5532DD right now with LM4562NA. These come with 10MHz and 55MHz speeds. Does it matter witch one to use?

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[6L6]

It doesn’t matter at audio frequencies. Feel free to try the 4562 in your application.

 

[abraxalito]

When you replace a 10MHz GBW opamp with a 55MHz one it would be prudent to check the decoupling and monitor the output with a 'scope to verify there isn't any oscillation. The 4562 has higher current noise than the 5532 so, depending on the surrounding resistors, might not be an upgrade in noise terms.

 

[vanakaru]

Thanks, I thought it is to do with oscillation.