Correct Answer - Option 2 : 1.333 V
Concept:
Output voltage of DAC is calculated as:
Output voltage = decimal equaled × Resolution
Resolution: It is defined as the smallest change in the analog output voltage corresponding to a change of one bit in the digital output.
The percentage resolution (R) of an n-bit DAC is given as:
\(R = \frac{1}{{{2^n} - 1}} \times 100\)
The resolution of an n-bit DAC with a range of output voltage from 0 to V is given by:
Resolution = \(\frac{{{V_{FS}}}}{{{2^n} - 1}}\)
Calculations:
Given:
VFS = 10V
n = 4
(0010)2 → (2)10
Resolution = \(\frac{{10}}{{{2^4} - 1}} = 0.6667\)
Output voltage = (0.6667) × 2
Output voltage = 1.333 V