TTL convertor

Discussion in 'General Electronics Chat' started by karthickkumar, May 16, 2008.

  1. karthickkumar

    Thread Starter New Member

    Apr 13, 2008
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    Hi All, I want to convert a 500mv amplitude messed up pulse to a TTL pulse.
    Please suggest me some good circuit.
    thanks
    karthick
     
  2. Wendy

    Moderator

    Mar 24, 2008
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  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Bill's suggestion would certainly work.

    You could also use a TLV7211 which is a single CMOS comparator that has rail-to-rail inputs and push-pull outputs that would run on a single 5v supply.

    For a voltage reference from a 5v supply, you could use a 1.5k current limiter resistor in series with a couple of forward-biased 1N5817 Schottky rectifier diodes to give you around a 270mV reference for the - input, and put your signal on the + input. If you wanted some hysteresis, put a 1k resistor between your signal and the + input, and connect a 1meg resistor from the output to the input.
     
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