Find resolution & volts of a 2-digit BCD D/A converter, Computer Engineering

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A 2-digit BCD D/A converter is a weighted resistor type with ER = 1 Volt, with R = 1M? , Rf = 10K? . Find resolution in Percent and Volts.

Ans. Resolution = 1/22 = 0.25 volts.
Since the resolution is determined through no. of input bits of D/A converter;

For illustration two bit converter has 22(4) possible output levels, thus its resolution is 1 part in 4
In percent this will be ¼ X 100 = 25%

In volts, this will be 0.25 volts.


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