[SOLVED] How to do quantasizing of ADC reading

[BrianSw]

I can't seem to find a simple explaination of how to perform this calculation for a 10bit reading for an AD converter.

Actual voltage=Result of conversion */ quanta level

If Vref is 5v and using a 10bit A/D then quanta level is .0048828125 which is then
changed to 4.8828125 and then multiplied by 256 to give 1520 as a quanta level.

Now next is how to get actual voltage is where I'm confused. I don't think I know what */ is and how to use it in the calculation.

Suppose A/D reading was 512 so

Actual voltage = 512 */ 1250

Actual reading is 2500 or 2.5 volts

How is this performed 512 */ 1250 to get that result?

Thanks, your help is greatly appreciated.

Bryan

 

[ark5230]

If AD reading is 512 then actual voltage is
512 * .0048828125 = 2.5
Just multiply the ADC reading (10 bit data) by value of 1 step that in the present case is .0048828125 .

 

[kesha]

hello guys
I'm kyle
do u know how to build the inner digital current loop from this journal. i tried but i have problem with adc nits and so on. thx