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LMK61E2-156M: 1.8V single end output

Roy Chou1
Genius 13905 points
Part Number: LMK61E2-156M
Other Parts Discussed in Thread: LMK6C,

Hi Team,

Could you let me know which register could adjust the output waveform from +/-900mV to 0~1.8V

Regards,

Roy

  • 0
    TI__Expert 6140 points

    Hello Roy,

    Seems like you have the outputs AC coupled and you're looking for DC coupled with DC offset, this is done via termination not register settings.

    Regards,

    Amin

  • 0 in reply to Amin Eshraghi
    TI__Expert 6140 points

    I just read the title, seems like you're looking for an LVCMOS oscillator?

    Currently the only release LVCMOS oscillator that we have:

    We are sampling the BAW Oscillator, LMK6C currently, which comes in smaller packages (3225, 2520) and fixed frequency (<200 MHz).

  • 0 in reply to Amin Eshraghi
    TI__Genius 13905 points

    Hi Amin,

    Below is our target. Is it impossible to use LMK61E0 to achieve the waveform?

    Could you let me know which spec shows that the LMK61E0 could achieve the waveform?

    Regards,

    Roy

  • 0 in reply to Roy Chou1
    TI__Expert 6140 points

    Hello Roy,

    LMK61E0 is a singled ended LVCMOS OSC. One output channel, going rail to rail.

    The rail here being 3.3V, so perhaps not what you're looking for.

    LMK61E2-156M is differential output only. Are you looking to adjust the SE levels? You will still have differential output though... you can't disable other side of the channel. I believe you're using AC coupling and device needs to be DC coupled if you're looking for ~0 - 1.8V:

    Amin