Features of schematic and physical and topological design of analog integrated comparators
DOI:
https://doi.org/10.15587/1729-4061.2014.28860Keywords:
operational amplifier, single-limit analog comparator and Schmitt trigger, C-MOSAbstract
In practice, devices, which form either voltage with opposite polarity at the output at almost equal absolute values or voltage with the same polarity are the most widely used. The first option is typical for using as a comparison circuit of operational amplifier (OP), and the second – in using specialized integrated circuits. In the second case, the output voltages of the comparator are consistent in magnitude and polarity with the signals, used in digital technology.
Based on the above, we can say that the input signal of the comparator is of the analog nature, and output – digital. Consequently, comparators often act as elements of communication between analog and digital devices, i.e. act as analog-digital converters (ADC).
Due to the fact that both analog and digital signals are used in modern telecommunication systems, we have both analog and digital comparators, respectively. Digital comparator differs from analog in that it is designed to compare two numbers that are given in the form of binary codes.
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