Due Audio Line Level Interface Circuit

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hi - tested line level interface due external amp.

most of find search used op amp drive speaker directly whereas want use larger external amplifier. here's circuit in case useful others.

i decided on 1k1 limiting resistor on safe side after reading stories fragility of dac0. figured lower volume easier compensate letting magic smoke out!

i've attached image of circuit

chris

the caps need 1uf (plastic film or electrolytic).

0.1uf attenuate bottom 3 octaves.

ceramic bad idea audio (microphonic, non-linear), 0.1uf invites use
of random decoupling cap that's lying about!


Arduino Forum > Products > Arduino Due (Moderator: fabioc84) > Due Audio Line Level Interface Circuit


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