Qasim Posted July 19, 2004 Report Share Posted July 19, 2004 i want to have an ic that takes the incoming analog frequency as an input and straight away giving the binary on its output pins.The range should be from 1khz to 20 khz. Quote Link to comment Share on other sites More sharing options...
GPG Posted July 20, 2004 Report Share Posted July 20, 2004 How many digits/resolution? What type of output, BCD, LED, LCD? Quote Link to comment Share on other sites More sharing options...
Qasim Posted July 20, 2004 Author Report Share Posted July 20, 2004 just takes input as a tone ranging from 1-10khz and giving BCD as output. Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted July 23, 2004 Report Share Posted July 23, 2004 It's the first part you will have trouble with; a frequency measuring circuit. This is done with a differential amplifier. You compare the two frequencies, of the same phase, giving you a zero output. The phase part is the hardest. You will need to set the phase up using two generated clocks. One clock is the signal, the other clock is the reference oscillator. Quote Link to comment Share on other sites More sharing options...
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