The digital frequency doubler of square wave output formed by MIC74121

Published:2011/6/17 9:28:00 Author:Borg | Keyword: digital frequency doubler, square wave | From:SeekIC

In the figure is the digital frequency doubler of square wave output. Usually, a digital frequency doubler works by the 2 output narrow pulses which are generated by the front-end and rear-end of the input pulse. In figure (a) is a basic frequency doubler circuit, A1, A2 and B are the triggering front-end of the single stable multi-resonance oscillator (MIC74121). Only when either of A1 and A2 is 1 , the other is 0 and B is 1 is the circuit triggered. After the rising edge of the input signal goes along td (the transiting time delay of the phase inverter), the single steady multi-resonance oscillator is triggered.



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