successive approximation adc v3.0

224

03:26:23

push button to start 1 sample. 8 bits of sampling. 

had to remove sample and hold from previous versions because of spaces.

v2.0 : http://everycircuit.com/circuit/4977061715247104

v1.0 : http://everycircuit.com/circuit/6226264596676608

published 10 years ago

Taz8du29

10 years ago

Wow ! Nice circuit ! But that's laggy ^^ I did something similar, but idk if it's faster, or slower ... http://everycircuit.com/circuit/5627591942733824

djmoc

10 years ago

didn't analysed all yours but at first it seems to be a linear that count not a successive approximation. don't know what you mean by faster slower but if you think about conversion time, mine take n + 1 clock to complete where n is bit number and with sample and hold it takes 1 more clock. I made this for real with an FPGA and it can take a clock of 400kHz with decent precision and no special care. I made it for fun, not for real use... there is plenty of cheap converter for less than 5 bucks that will be better than this one.

Taz8du29

10 years ago

Faster/slower is for the number of clock cycles ... Mine is fast approx because it firstly check with big steps, then with smaller ones. I did it for fun too !! I know that some ADCs (pretty cheap now) are using ~1024 op amps to achieve 1-clock resolution !!

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.