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5

can we have re-configurable analog filters? Yes. The knob you turn on your grandma's kitchen or living room radio changes the tuning of an oscillator by changing the capacitance of a component. Any stable oscillator is essentially a filter for its resonant frequency. Also, plenty of other examples: Tunable RC filters with adjustable R; mechanically tunable ...


2

Yes absolutely there is also the equivalent of aperture jitter results in a DAC. This is due to the effects of jitter in the sampling clock itself, and variation in the electronics of the time duration for the translation from the different digital levels to analog levels in the output. In either case the jitter is not necessarily just due to a S/H circuit ...


0

The output of a DAC represents a zero-order hold (equivalently called a sample and hold) of the digital input samples: each sample is held at the value in the analog domain for the time duration between samples. There are also other DAC implementations such as a RTZ (Return-to-zero) DAC which brings the signal back to zero midway in the duration. The zero-...


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