0

I see that this ADC has a built in voltage reference, therefore I wont have to bias my audio signal as it goes into the ADC input. The thing that confuses me is however the full-scale input voltage listed in the datasheet:

enter image description here

So say my supply voltage (VA) is 3.3V, does this mean that the maximum unclipped input amplitude is equal to (3.3*0.56/2) = 0.924V? This just seems low to me.

BBales
  • 145
  • 1
  • 8
  • 1
    Looks like it! Here's a better datasheet link, btw. http://www.cirrus.com/en/pubs/proDatasheet/CS5343-44_F5.pdf – Daniel Dec 04 '15 at 00:33

1 Answers1

1

This is an audio digitizer. Since the standard Line In voltage is about 1 volt p/p, there is no obvious reason to require a greater input range.

And on what basis do you judge your calculated range to be low? Why, exactly, does it "just seems low to me"?

WhatRoughBeast
  • 59,978
  • 2
  • 37
  • 97
  • When I have used ADCs in the past, the max input voltage swing was a lot closer to the positive rail. This one is only 0.56*Vdd. – BBales Dec 04 '15 at 17:52