Syncing the ICL7660

Discussion in 'General Electronics Chat' started by Stryker, Mar 30, 2009.

  1. Stryker

    Thread Starter New Member

    Mar 26, 2009
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    How can be synced an ICL7660 operating between gnd and +10V by a clock swinging between gnd and +5V ?

    How much should be the minimum amplitude of the clock applying to the OSC input? Swinging from where to where?

    I'm confused!:confused: Please clarify!

    Thanks in advance
    Stryker.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. Stryker

    Thread Starter New Member

    Mar 26, 2009
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    The datasheet doesn't have enough explanation... Just says a rail to rail clock... it's not in detail.
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
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    See page 6, 1st paragraph, 2nd sentence.

    Instead of a TTL IC, you could use a simple NPN transistor with a 3k base resistor and a 10k resistor from the collector to Vcc (+10v). Feed your existing clock to the other side of the 3k resistor.
     
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