The input and output duty cycles are related by the formula: Tests of the circuit produced the oscilloscope capture shown in Figure 2. Both the 4.0954MHz oscillator signal (at the bottom) and the ...

Exclusive NOR gate U4 is used to buffer the square wave input signal and to double the frequency of the signal. The square wave signals at the input of U4D are delayed relative to each other by two ...

By controlling the ratio of input signal to feedback ... but we’ll get something that’s ever more like a square wave as we keep passing the signal through further amplification stages.

Figure 2 shows a 100-MHz square wave input, a 12.5-MHz output for the filter ... maximum operating frequency of 50 MHz at 6 V, Mixed Signal Integration Corp. and other companies have found that ...

Or, using a fifth- or seventh-order switched-capacitor filter with a square-wave output ties up two I/O pins on the MCU. One output is used for the filter input and one for the filter clock.