A 10-bit DAC provides an analog output which has a maximum value of 10.23 volts. Resolution of the DAC is

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ESE Electronics 2012 Paper 2: Official Paper
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  1. 10 mV
  2. 15 mV
  3. 20 mV
  4. 40 mV

Answer (Detailed Solution Below)

Option 1 : 10 mV
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Detailed Solution

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Concept:

The resolution of DAC is a change in analog voltage corresponding to LSB bit increment at the input.

The resolution (R) is calculated as:

\( R= \frac{{{V_{FS}}}}{{{2^n} - 1}}\)

No. of levels = 2n – 1

Vr is reference voltage 'or' Full-scale voltage

Calculation:

Given n = 10 bits

VFS = 10.23 V

\(R= \frac{10.23}{{{2^{10}} - 1}}\)

R = 10mV

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