Digital to Analog conversion in Multisim

[ksani]

Here is schematic for Analog to Digital conversion:

Here are two Digital to Analog converters in Multisim:

Which one should I use? I want to connect it at output of ADC to get original sine wave. How should I connect it (which pins should I use)?

[ksani]

 I found answer, however, other problem occurs 🙂

Here is schematic with 8bit DAC:

 

Here is transient analysis, showing input and output sine wave:

 

What are voltage spikes at output signal?

[David22JRA]

Hello ksani

I am wondering what happens if you increase or decrease the clock frequency?

Regards

[ksani]

Spikes are still there... I think I need low pass filter at output to get smooth voltage 🙂

[David22JRA]

Hi

Actually that might be a great step. 

Regards

[gustavodias]

Hi guys,

How can I make a 12 bits adc? I'm studing it in university and I need do a little project about it. Please helpe me! kk
Thank tou

[NariParish]

Hi..as per my knowledge the original spikes are there. It is not due to the largeness of screen or low time/freq view on oscillator. You can improve this signal by changing the value of your resistors. Also you can try the filetrs circuits using the resistors and capacitors.