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About Analog to Digital Conversion (ADC)

Supported by A/D chip or internal A/D converter.

Characterized by:
1. Resolution – the minimum change in input voltage that can give rise to a change in output
Resolution = (VRH – VRL) / (# of quantization steps) # of quantization steps = 2^b where b is # bits used for encoding

2. Linearity – higher for a better conversion

3. Speed
Need data rate to satisfy the Nyquist criterion.
Recall that Nyquist criterion says sampling frequency should be at least twice the frequency of the fastest harmonic of the signal to be sampled.

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