Consider a 4-bit successive approximation A/D converter with full-scale range of 8 volts. Using the successive approximation algorithm (with rounding), determine the 4-bit codes of the voltage values x = 1.2, 5.2, −3.2 volts, for the following types of converters:
a. Natural binary.
a. Bipolar two’s complement.
In each case, show all the steps of the successive approximation algorithm. Explain what happens if the analog voltage to be converted lies outside the full-scale range of the converter. This happens for x = 5.2 in two’s complement, and x = −3.2 in natural binary representations.
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