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ADC & DAC

rishinaidusrm

Jun 9, 2011
3
Joined
Jun 9, 2011
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3
Hi guys I am new to this forum
I am a beginner. Plz clear my problem

If I convert an analogue signal to digital and again convert it back to analogue will i get exactly same signal.
 

duke37

Jan 9, 2011
5,364
Joined
Jan 9, 2011
Messages
5,364
Not quite!
If you use 8 bits you have 256 steps to fit your analogue signal to. When you convert back you will get the steps.
There is also the problem of accuracy of the convertors and interference between the digital and analogue signals. An interesting experiment is to charge a capacitor and discharge it through a resistance. Digitising the voltage should show a stepped smooth curve but if there is interference between analogue and digital it can give large and small steps
 
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