Electronics > Beginners
Audio Conventions - Levels and Meters
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Richard Crowley:
You did not mention what you are connecting this to?  If it is typical consumer or prosumer gear, then 2.5V is very hot for nominal working levels.  Consumer standard is -10dBu (around 0.5VPK)

Note that the data sheet specs for your (unidentified) MP3 chip is probably the max limit, and not the nominal standard operating level.

Ref: https://en.wikipedia.org/wiki/Line_level#Nominal_levels
ed_reardon:
Sorry, I maybe should have mentioned the IC!

It's the VLSI VS1053,  datasheet here http://www.vlsi.fi/fileadmin/datasheets/vs1053.pdf

Page 8 gives the values I'm looking at.

Cheers,
Ed.
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