4 bits Successive approximation adc

151

01:58:51

take 2 clock per bits + 3 clock to complete a conversion

to start the circuit you need to toggle 1 time the logic button on the left. 

published 10 years ago

hurz

10 years ago

I think this can be done a bit easier.

djmoc

10 years ago

surely but I didn't yet found how. I know uC do it 1 clock per bit + 1 clock but I don't know how.

hurz

10 years ago

Maybe you like this version http://everycircuit.com/circuit/4798576620208128

djmoc

10 years ago

I saw it before tryin to build mine but the problem is that it have to count every value. so for an 8 bits ADC you need 256 clock to pass from 0 to max, mine would take only 19 clock to do the same. as a final goal I don't really care about the logic complexity because I will implement it in an FPGA with a parallel output port, so I just need to be fast.

hurz

10 years ago

Good point!

djmoc

10 years ago

I made a faster version of this converter, the new one can run up to 4 time faster.

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