EE 230 Lab 12 Fall 2006 Data Converters - Inherent limitations

EE 230 Lab 12 Fall 2006 Data Converters - Inherent limitations

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EE 230 Fall 2006 Experiment 12 Data Converters – Inherent Performance Limitations Purpose: The purpose of this laboratory experiment is to investigate some of the inherent fundamental limitations associated with the data conversion process. In particular, the issues of time quantization, amplitude quantization, and sampling rate will be explored. Equipment: Computer with MATLAB software and sound card External speakers Background: Data converters are widely used as the interface between the analog environment and the digital world. Analog to Digital Converters (ADC) convert physical analog signals to digital form and Digital to Analog Converters (DAC) convert digital signals analog form. In most applications, it is expected that all information about the input signal to an ADC be preserved in the sampled outputs obtained from the ADC. Correspondingly, it is generally expected that the output of a DAC will create the desired analog signal. Existing data converters can come very close to accomplishing these tasks provided that the right data converter is used and provided it is used properly. Even if data converters are ideal, some potential problems can occur if the resolution is not high enough or if the sampling rates are too low. In some applications, the phase of the sampling clock is also very important. If the data converter is not ideal, several additional problems can also occur. In this experiment, emphasis will be placed upon the performance capabilities and
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EE 230 Lab 12 Fall 2006 Data Converters - Inherent limitations

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