Hey Daniel,
We are using the Hifi Berry for audio processing for a guitar amplifier. The signal coming out of the DAC will be fed into some amplification stages and eventually out through a speaker. We need to know the output of the DAC so that we can bias our amp stages appropriately. So, would the output be biased around 0? Is there a range that it would rest in? What is the settling time? Is there a datasheet/oscilloscope that could illustrate the output of the DAC that will be fed to my amplifier stages?
Thanks in advance!
Jenn
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3 comments
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HiFiBerry team Hi Jenn,
the output signal at max level is about 2.2Vrms.
As it is an audio DAC, you should not feed rectangular waves into it. Therefore I'm not sure what you mean by settling time.
Best regards
Daniel -
Jennifer Johnson Hey Daniel,
Thank you for your quick response. The max value helps a lot. I guess a follow up question is about "bias point." We are feeding a guitar signal into an ADC which accepts values from 0-5V. So we are biasing our signal around 2.5V and using up as much as the 5V range as possible.
What would be my resulting output if my input was say a sine wave biased at 2.5V with a amplitude of .75V. Is my output a sine wave centered at 0V? And if we do no processing and send it directly through the output, what would should I expect my output to be?
Thank You! -
HiFiBerry team Hi Jennifer,
In this case, it depends on your ADC. I can't say this. If you output a sine wave at full level, the output is about 2.2Vrms. But I can't say, what values your ADC will generate for the given values.
Best regards
Daniel
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