In the book it says:
"We loosely define Nyquist-rate data converters as those converters that generate a series of output values in which each value has a one-to-one correspondence with a single input value.
For example, a Nyquist-rate D/A converter would generate a series of analog output levels, where each level is a result of a single N-bit input word."
But a Nyquist-rate A/D converter generates the same output value for a range of input values. So there is no one-to-one correspondence. So why the category? I mean, I see there the word "loosely", but come on.
Also, the Nyquist-rate converter is defined in opposition to the oversampling converter.
I suppose that the oversampling D/A converter generates multiple analog output values for the same bit word. But what does the oversampling A/D converter do?
It seems to me that Nyquist-rate converters are those converters which operates at a rate close to the Nyquist-rate of the signal, while the oversampling converters operate at a rate much larger than the Nyquist-rate of the signal. But why say about the one-to-one correspondence? Ok, it means the same thing in the case of the D/A, but in the case of the A/D it does not mean the same thing, and it can create confusion if one is a beginner.
So, after all this mumbling. My question. What does the oversampling A/D converter do?
"We loosely define Nyquist-rate data converters as those converters that generate a series of output values in which each value has a one-to-one correspondence with a single input value.
For example, a Nyquist-rate D/A converter would generate a series of analog output levels, where each level is a result of a single N-bit input word."
But a Nyquist-rate A/D converter generates the same output value for a range of input values. So there is no one-to-one correspondence. So why the category? I mean, I see there the word "loosely", but come on.
Also, the Nyquist-rate converter is defined in opposition to the oversampling converter.
I suppose that the oversampling D/A converter generates multiple analog output values for the same bit word. But what does the oversampling A/D converter do?
It seems to me that Nyquist-rate converters are those converters which operates at a rate close to the Nyquist-rate of the signal, while the oversampling converters operate at a rate much larger than the Nyquist-rate of the signal. But why say about the one-to-one correspondence? Ok, it means the same thing in the case of the D/A, but in the case of the A/D it does not mean the same thing, and it can create confusion if one is a beginner.
So, after all this mumbling. My question. What does the oversampling A/D converter do?
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