Do I care if Laddered stepped attenuator is 100k ohms? - diyAudio
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Old 13th November 2008, 01:35 PM   #1
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Default Do I care if Laddered stepped attenuator is 100k ohms?

I am looking at a 100k laddered stepped attenuator for a project. The attenuator would go between a DDDAC 1543 DAC and a BOSOZ pre amp.
Normally I would use a 10k attenuator, but a 100k is available. Do I care if this attenuator is 100k ohms?
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Old 13th November 2008, 07:34 PM   #2
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The Mosfets of the BOSOZ have a bit much input capacitance for a 100K pot.
You could consider that circuit done with N channel JFETs and I'm sure it would
work fine.

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Old 13th November 2008, 09:25 PM   #3
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Nelson...thanx for your reply...Can I just plug in JFETs in place of the Mosfets??? or should I do a search on DIYAUDIO to see what needs to be done...
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Old 13th November 2008, 10:10 PM   #4
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I think there's a thread somewhere...
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