Electronics - Analog and Digital Converters - Discussion

Discussion Forum : Analog and Digital Converters - General Questions (Q.No. 10)
10.
The resolution of a 0–5 V 6-bit digital-to-analog converter (DAC) is:
63%
64%
1.56%
15.6%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

Xxxx said:   1 decade ago
Can you explain?

Vaisakh said:   1 decade ago
Resolution= 1/2^n
n is the bit
so here resolution=(1/2^6)*100=1.56%

Ashok said:   1 decade ago
Resolution=1/2^n-1
Here n is number of bits
So here resolution=(1/2^6-1)*100
(1/63)*100=1.58%

Pkansal2105@yahoo.in said:   1 decade ago
Resolution = 5/64 =. 078

In %age = (.078/5)*100 = 1.56%

Manu M. said:   1 decade ago
I still don't get how you get this answer.

If I have a 6 bit DAC I have 64 outputs(000000-111111), So when the input is 5V, the output is 111111. Then the voltage needed to increment from 000000 to 000001 is 5/64=0.078125. The percentage is 7.8125.

I don't know much. But I think percentage is represented when the input is 0-1V. Then 1/64 = 0.015625 = 1.5625%.

K VENKATA RAMANA said:   10 years ago
Resolution of DAC : V/(2^(n-1)).

The given we is 0-5v so resolution is 15.625.

Answer is D.

Janib Ali said:   10 years ago
As I know that If we are not familiar with Vref then:

Resolution = 1/2^n.

If we are given Vref then, Resolution = Vref/2^n.

Here n = number of bits.

Ankit said:   10 years ago
The resolution of a DAC is the reciprocal of the number of discrete steps in the output. This, of course, is dependent on the number of input bit.

Ramkamal said:   9 years ago
R = BETA(Vmax-Vmin)/2^n-1. Here beta depends on amplifier or filter. But in this question have no value of beta.

Sj vishwas said:   8 years ago
% resolution = (1/2^n)*100.


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