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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Arduino based LDR volume and source selection controller
Arduino based LDR volume and source selection controller
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Old 21st November 2019, 12:26 PM   #1211
t-minik is offline t-minik  France
diyAudio Member
 
Join Date: May 2006
Location: Montpellier
Hi all.

I just added an op amp buffer (LME49860) at the output, just before output relays.

LME49860 datasheet state common mode input impedance = 1000MOhms

should i preferably set LOAD_IMPEDANCE = 1000000000 or simply consider it as negligible and delete it from the code .

best regards
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