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  Using the LT1719 Comparator for Low Dispersion Sine Wave to Square Wave Conversion &mdash LT Journal
  PDF, 139 Kb, 档案已发布: Nov 1, 1999
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  DESIGN IDEAS Using the LT1719 Comparator for
  Low Dispersion Sine Wave to
  Square Wave Conversion by Joseph G. Petrofsky
  The LT1719 is an UltraFastTM,
  4.5ns comparator with separate analog and digital supplies. Both supplies
  can be as low as 2.7V, or the LT1719
  can be used as a level translator in
  mixed 3V/5V systems. The propagation delay of comparators is typically
  specified for a 100mV step, with some
  fraction of that for overdrive. But in
  many signal-processing applications,
  such as in communications, the goal
  is to convert a sine wave, such as a
  carrier, to a square wave for use as a
  timing clock. The desired behavior is
  for the output timing to be dependent
  only on the input timing. No dispersion or phase shift should occur as a
  function of the input amplitude, as
  this would result in AM to FM conversion. The LT1719 is an excellent choice
  in these applications, particularly
  when the input signal is larger than
  100mVP-P. Test Circuit
  The circuit of Figure 1 was used to …

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• Signal Conditioning > Comparators > High Speed Comparators

其他名称:

LT1719IS8PBF, LT1719IS8 PBF