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05/30/06 12:09
Modified:
  05/30/06 12:14
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 		 #117259 - Sine Wave to pulse Converter
I made an NCO based sinewave generator which produces variable frequency output up to 25 MHz 1V pk to pk output.
I need to convert this frequency to pulses and my first thought was as follows:
1. Amplify this signal to 10v pk to pk.
2. use half wave rectifire.
3. Use the amplified signal to drive Schmitt trigger input of 74121 monostable multivibrator to produce a narrow pulse on every rising edge.
4. job Done.
My problem is the amplifier. I couldn't make a large bandwidth amplifier for both low frequency and high frequency together.
Do you have any other ideas for doing the same job or wide bandwidth amplifier.
Mahmood

List of 41 messages in thread
TopicAuthorDate
Sine Wave to pulse Converter            01/01/70 00:00      
   a very much simpler idea            01/01/70 00:00      
   In fact            01/01/70 00:00      
      Accuracy            01/01/70 00:00      
         the accuracy            01/01/70 00:00      
            Sinusoidal NCO            01/01/70 00:00      
               the original            01/01/70 00:00      
   if you can live with the delay, then            01/01/70 00:00      
      If all else fails            01/01/70 00:00      
   What about a fast comparator?            01/01/70 00:00      
      Great            01/01/70 00:00      
   Another Idea            01/01/70 00:00      
   It's doable, but why this way?            01/01/70 00:00      
   Zero-crossing detector            01/01/70 00:00      
   one thing nobody's mentioned ...            01/01/70 00:00      
      oh yeah            01/01/70 00:00      
      nco simulation            01/01/70 00:00      
         code            01/01/70 00:00      
      Don't like it            01/01/70 00:00      
         not an OP-Amp ..            01/01/70 00:00      
            What I had in mind            01/01/70 00:00      
               a) and b)            01/01/70 00:00      
               You can...            01/01/70 00:00      
            code            01/01/70 00:00      
               Thanks            01/01/70 00:00      
                  depends on what make of device they are            01/01/70 00:00      
                     GAL16V8            01/01/70 00:00      
                        WinCupl            01/01/70 00:00      
                        GAL16V8 is a bit small            01/01/70 00:00      
                           ispLEVER            01/01/70 00:00      
                              look around for PALASM            01/01/70 00:00      
                                 Mr.Boole invented it when silicon was a            01/01/70 00:00      
                                    it is a teeny bit ancient            01/01/70 00:00      
                                       Yes, it's ancient ... but so am I ...            01/01/70 00:00      
                                          VHDL is waning            01/01/70 00:00      
                                             Fewer vhdl users means.....            01/01/70 00:00      
                                             look at who pays for the articles            01/01/70 00:00      
                                             VHDL vs Verilog            01/01/70 00:00      
                              ispGAL            01/01/70 00:00      
   SGN output            01/01/70 00:00      
      Nope            01/01/70 00:00      

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