4. ADC has nothing new?

With the development of digital technology, ADC has made substantial progress and PC817B datasheet and development, the ADC is moving in new low-power, high-speed, high-resolution direction, on this basis, but also consider power consumption, size, convenience, multi-function, and PC817B price and the compatibility of computer and PC817B suppliers and communication networks. ADC main application areas are continuously expanding, widely used in multimedia, communications, automation, instrumentation and other fields. Different requirements in different areas, such as interfaces, roar source, channel, the internal configuration requirements, each type of ADC has a corresponding optimal design method. At the same time, the user must consider not only the process itself and to the ADC circuit, but also take into account the ADC peripheral circuits, such as the appropriate signal conditioning circuit analog circuit design. If a single power supply, low power design under the new ADC, in order to solve the single power input and output dynamic range problem, you can compensate for ultra high-speed bipolar (XFCB) manufacturing process of current-feedback op amp; in order to solve low-voltage, low current conditions, low-noise reference voltage temperature drift problems can be implanted using external FET (XFET) reference method; to meet the low power requirements, energy conservation can work (Power Down); In order to design micro-ADC, can be used to reduce the size of the wire or three wire serial interface compatible; order to reduce the signal to the A / D converter analog signal path of error, self-calibration technique can be used to correct errors and so on. For practical application of the specific requirements of the new design came into being. The technology continues to refine and improve the existing ADC speed and accuracy, as well as add new features of modern ADC and development.