IS220YPROS1A Channel digital output

Description

IS220YPROS1A Channel digital output

The IS220YPROS1A digital-to-analog converter is a system for converting digital signals into analog signals, which can generally be achieved with low-pass filtering. The digital signal is decoded first, that is, the digital code is converted into the corresponding level to form a stepped signal, and then low-pass filtering is carried out.
According to the theory of signal and system, the digital step signal can be regarded as the convolution of the ideal impulse sampling signal and the rectangular pulse signal, then according to the convolution theorem, the spectrum of the digital signal is the product of the impulse sampling signal spectrum and the rectangular pulse spectrum (namely, the Sa function). In this way, by using the reciprocal of Sa function as the spectrum characteristic compensation, the digital signal can be restored to the sampled signal. According to the sampling theorem, the spectrum manager of the sampled signal can obtain the spectrum of the original analog signal by low-pass filtering.
Generally, implementation is not directly based on these principles, because the sharp sampled signal is difficult to obtain, so the two filters (Sa function and ideal low pass) can be combined (cascaded), and because the filtering characteristics of these systems are physically impossible, it can only be approximately completed in the real system.
The IS220YPROS1A analog-to-digital converter is a system for converting analog signals into digital signals, a process of filtering, sampling holding and coding.

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