Electronics and Communication Engineering - Digital Electronics - Discussion
Discussion Forum : Digital Electronics - Section 1 (Q.No. 1)
1.
The resolution of an n bit DAC with a maximum input of 5 V is 5 mV. The value of n is
Answer: Option
Explanation:
1000 = 5 or N = 10.
Discussion:
32 comments Page 4 of 4.
Rakshatha priya P said:
2 years ago
Resolution = V/2^N-1.
5mV = 5/2^N-1
2^N-1 = 5/5*10^-3V
2^N-1 = 1/10^-3V
2^N-1 = 10^3V
2^N-1 = 1000
2^N = 1000+1
2^N = 1001.
The nearest power to this value for 2^N is 2^10.
i.e,2^9=512, 2^10=1024, then the value 1024 is nearest to 1001,
then 2^N=2^10,
=> N=10.
5mV = 5/2^N-1
2^N-1 = 5/5*10^-3V
2^N-1 = 1/10^-3V
2^N-1 = 10^3V
2^N-1 = 1000
2^N = 1000+1
2^N = 1001.
The nearest power to this value for 2^N is 2^10.
i.e,2^9=512, 2^10=1024, then the value 1024 is nearest to 1001,
then 2^N=2^10,
=> N=10.
(18)
Nireesha S said:
12 months ago
Nice Explanations. Thanks all.
(3)
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