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XTAL
Related Posts

  • Forum Post: Re: CDCE913 pullability - no hint that it's working....

    mapefer3
    In the datasheet of the XTAL you mentioned, the CL=18pF and the shunt capacitance is C0=7pF. +/-40ppm is the pulling range of the chosen XTAL calculated with the Pulling range tool included in the TI clock pro ( http://www.ti.com/litv/zip/scac119 ). You can find recommended XTALs to use the...
    on Jul 16, 2010

  • Forum Post: Re: CDCE913 pullability - no hint that it's working....

    mapefer3
    In the datasheet of the XTAL you mentioned, the CL=18pF and the shunt capacitance is C0=7pF. +/-40ppm is the pulling range of the chosen XTAL calculated with the Pulling range tool included in the TI clock pro ( http://www.ti.com/litv/zip/scac119 ). You can find recommended XTALs to use the...
    on Jul 16, 2010

  • Forum Post: using a XTAL with the CDCS502

    mapefer3
    Dear Sir/Madam, I am currently designing a very frequency sensitive circuit using your CDCS502 clock gen chips. There are several particular quartz crystals I need to use with load capacitances ranging from 12pF to 18pF. In the CDCS502's data-sheet it says it is possible to connect small external...
    on Jul 16, 2010

  • Forum Post: Re: using a XTAL with the CDCS502

    mapefer3
    If the load capacitance of the XTAL is 10pF, the CDCS502 provides a typical XTAL load of 10pF; that means that the CDCS502 provides 20pF to GND in XIN and another 20pF to GND in XOUT. If the chosen XTAL requires 18pF load, when using the CDCS502, a capacitor of 16pF should be placed in XIN and another...
    on Jul 16, 2010

  • Forum Post: Re: CDCE913 Output Problem

    mapefer3
    The CDCE913 has internal capacitors that you can program to match the crystal load specified by the XTAL datasheet. Therefore you might not need the external caps C80 and C81 that currently are in your schematic. That will fine tune the frequency of oscillation according to the pullability of the XTAL...
    on Nov 30, 2010

  • Forum Post: Re: cdce925perf clock synth eval card

    Alan Ocampo
    Here's a brief sampling of 25 MHz crystal models with 18-20 pF load cap in HC-49 SMT package, available on Digi-key, for your consideration: ABLS2-25.000MHZ 9C-25.000M ECS-250-18 ATS250BSM Best regards, Alan Ocampo Application Engineer SVA - Signal Path Solutions
    on Jan 27, 2012

  • Forum Post: BQ32000 Using a different crystal

    Victhor Foster
    I am having difficulties sourcing a crystal with 12 pF load capacitance, including the reference KDS DMX-26S crystal. I would like to use either a 6 pF or a 12.5 pF crystal, are there any means to correct this difference in load capacitance with extra passive components on the crystal circuit? I suppose...
    on Feb 26, 2012

  • Forum Post: BQ32000 clock source

    Yogesh Palkar
    Hi, I have used BQ32000 in a circuit. I have used a 32.768kHz crystal as suggested. Is there any need to connect capacitors to the crystal? Or will the crystal simply work alone? Currently I have connected the crystal alone and the Oscillator flag bit is set to 1. If needed, what value of crystal...
    on Mar 29, 2012

  • Forum Post: Re: BQ32000 clock source

    Yogesh Palkar
    Hello Ryan Kehr sir, The crystal that is suggested is not available locally. So I have used a 32.768kHz crystal that is available locally. In general for these crystals we use a ceramic low value capacitor. As in for a microcontroller, we connect a 33pF capacitor. Now is capacitor connection necessary...
    on Mar 29, 2012

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