How are unwanted frequencies removed prior to digital conversion?
Options
A. Pre-filters
B. Digital signal processing
C. Sample-and-hold circuits
D. All of the above
Correct Answer
Pre-filters
Digital Signal Processing problems
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1. In a 4-bit R/2R ladder digital-to-analog converter, because of negative feedback, the operational amplifier keeps the inverting (minus) input near ________.
Options
A. 5 volts
B. zero volts
C. a voltage determined by the binary weighted input