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There are two basic types of sample/hold circuits- inverting and noninverting-and two important parameters for these circuits-aperture time and acquisition time. Peak detectors are special forms of sample/hold modules in which the peak value of an input signal, once reached, is automatically held. The last networks discussed in this article are comparators, in which one or more summing resistors are...
This two-part article discusses the use of operational amplifiers in applications involving both digital and analog signals. In some cases the digital signals are used to control the acquisition of samples of analog signals. In other applications the digital signal is being converted into an analog voltage or, conversely, an analog is converted to a series of digital words. This first installment...
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