Download Advanced Data Converters by Gabriele Manganaro PDF

By Gabriele Manganaro

Have to wake up to hurry speedy at the most up-to-date advances in excessive functionality information converters? wish support picking the simplest structure on your program? With every thing you want to find out about the most important new converter architectures, this advisor is for you. It provides uncomplicated ideas, circuit and process layout innovations and linked trade-offs, casting off long mathematical proofs and supplying intuitive descriptions in advance. every thing from time-to-digital converters to comparator-based/zero-crossing ADCs is roofed and every subject is brought with a quick precis of the fundamental fundamentals. functional examples describing genuine chips, in addition to huge comparability among architectural or circuit ideas, ease structure choice and assist you reduce layout time and engineering probability. Trade-offs, merits and downsides of every choice are positioned into standpoint with a dialogue of destiny traits, exhibiting the place this box is heading, what's riding it and what an important unanswered questions are

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We decided which one of the five contacts would have led to the desired value for R), and, finally, in order to be able to use the resistor at its desired value, we held the effect of the corrective action (by permanently shorting one of the five contacts). 5 Trimming and calibration 37 (1) measuring one or more parameters of the device that may need to be altered; (2) corrective action on the device that changes the parameters to the desired value (possibly verifying that the parameter has been changed to the desired value); (3) holding the corrective action (with the aim of holding the outcome of the parameter correction), for example, storing a record of it in some form of memory residing on the device or in a place directly accessible by the device during operation.

Is again increased, becoming, for example, far greater than the number of (possibly multi-bit) cascaded stages of a pipelined ADC. In a folding–interpolating ADC most feedback is localized to only some of the individual blocks in order to limit parameter spread or locally improve linearity. Lastly, flash ADCs represent the most open-loop architecture, and are conceptually the simplest of all architectures. That allows this architecture to be, without doubt, the fastest of all. On the other hand, giving up on feedback and its ability to control parameter spread and linearity means that the accuracy of these converters becomes rather limited.

Therefore it can be used to compensate for changes that have occurred over time and bring the device operation back within the desired range. Second, when we talk about calibration we often refer to self-calibration, which means that, unlike trimming, the measurement–correction process is entirely performed within the device itself and does not require any special external equipment along with the ATE. g. ). As stated, this is a potential, and that is a critical point, because complex calibration algorithms can require quite some time as well, and, since it is often required that the device be completely calibrated before ATE testing is completed, it can, again, lead to the same cost issue as has already been mentioned in the case of factory trimming.

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