This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CDCLVC1102: 1PPS LVTTL signal Input

Part Number: CDCLVC1102
Other Parts Discussed in Thread: LMK1C1102

HI!

I need a Buffer to fan out 1PPS signal of LVTTL_3.3 standard without degrading the accuracy. 

Can CDCLVC1102 buffer be used for such purpose?

does it support Duty cycle adjustment ?

Can you please suggest any alternate better 1PPS Fanout buffer?

Thanks in advance,

Deva

  • Hi Deva,

    CDCLV1102 can be use for 1PPS signal.

    does it support Duty cycle adjustment ?

    You would get input duty cycle +/- 5% variation on output. It doesn't do duty cycle correction.

    You can also use LMK1C1102 as an alternative to it. The only difference is CDCLVC1102 is asynchronous while LMK1C1102 is synchronous output. So you would have some additional delay when 1PPS is applied.

    Best,

    Asim

  • HI Asim,

    Thanks for your reply,

    Is CDCLV1102  capable of driving a 50ohm load?

    Also, Can i AC Couple the Input ?

    Thanks in advance,

    Deva

  • Hi Deva,

    It can drive 50 ohm load. Driving 50 ohm load result in high currents so its not a recommended on all outputs because it could cause higher junction temperature. 

    If you AC couple input then you have to provide a external bias to your signal which is VDD/2.

    Best,

    Asim