Electronics and Communication Engineering - Digital Electronics - Discussion

26. 

A 12 bit ADC is used to convert analog voltage of 0 to 10 V into digital. The resolution is

[A]. 2.44 mV
[B]. 24.4 mV
[C]. 1.2 V
[D]. none of the above

Answer: Option A

Explanation:

.


Rajkumar said: (Aug 18, 2014)  
What is the formula used here?

Dilip N said: (Feb 13, 2015)  
10/(2^12 - 1) is 0.002442.

When you multiply with 1000 we get 2.442? How come it is 2.44m?

Hareesh Babu said: (Sep 4, 2015)  
But answer is given by mv that why multiply by 1000.

Ansu said: (Aug 4, 2016)  
Because in question, it's given v.

Sameer said: (Aug 21, 2016)  
But, the answer should be in the form of mV that's why he multplyed by 1000.

Deepshikha said: (Jun 20, 2017)  
Formula used : R=V/(2^n)-1.

Where R= resolution.
V=voltage.
N =bit used.

Rishi Ram Panth said: (Jul 25, 2017)  
Thank you so much for all.

Arun Shunmugam said: (Sep 7, 2017)  
Thank you all for explaining it.

Deepak said: (Oct 19, 2017)  
Why 1000?

Explain it.

Faiyaz said: (Feb 6, 2018)  
@Deepak.

Because option has given in mv.

Akshata said: (Jun 21, 2019)  
@All.

Why you are multiply by 1000. It is not necessary;

10/2^12-1 = 2.44mv.

Formula =E(v)/2^n-1 (n=no of bits).

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