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  1. LTC6955
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    Clock Distribution Devices
    Ultralow Jitter, 7.5GHz, 11 Output Fanout Buffer Family
    LTC6955

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    1. LTC6992 adjustable frequency while running?

      Forum Thread
      Answered
      Clock and Timing
      10 June, 2022
      I see that the output frequency can be set using Rset in the datasheet, but the specific words are "Rset programs the LTC6992's internal oscillator frequency" Does this allow for the frequency to be tuned while running i.e. or adjusted on the fly? Or rather just set and …
      Datasheet/SpecsLTC6992N/A

    2. Power consumption of LTC6992 vs LTC1098

      Forum Thread
      Answered
      Clock and Timing
      26 November, 2020
      … and my measurements confirm) that the LTC6992 requires more power than the LTC1098 (@5V). Approximately 0.5mW for the LTC1098 and 1.75mW for each LTC6992. Now I am searching for possible explanations. Are the two chips are manufactured in different technology nodes? Is it because the LTC6992 is not …
      Technology NodeadcMultiplexed A/D ConvertersLTC6992efficiencyLTC1098Precision A/D Converterspower consumption

    3. Can the LTC6992 be used as a PWM modulator for Class D amplifiers?

      Forum Thread
      Answered
      Clock and Timing
      09 September, 2018
      Hello！ Recently I was working on a Class D power amplifier. I learned that the LTC6992 is a PWM modulator. I use the LTC6992 as a modulator for Class D amplifiers. However, when the Class D amplifier is connected to the load, the PWM waveform of the LTC6992 changes, and …
      LTC6992class d amplifierpwm

    4. LTC6992 - First Pulse is too short to turn on MOSFET.

      Forum Thread
      Answered
      Power Management
      19 September, 2024
      … sure what the "correct width" is - could you clarify? Here I have attached an image showing the output of the LTC6992 - the purple pulse is about 71ns wide - the yellow is the signal going to the MOSFET gate (after the driver). Shown below is the LTC6992 part of the schematic.
      hardwareLTC6992CountersTimerBloxSupervisory CircuitsSingle-Supply Monitorsminimum on timeTimers and Delay Linearfirst pulseLTC699

    5. LTC6992 DIV pin voltage issue

      Forum Thread
      Answered
      Power Management
      24 April, 2025
      I have a used the LTC6692 as the PWM signal generator in picture 1, when i am checking the voltage at pin DIV with respect to GND_S, instead of the constant straight line, I am seeing the voltage waveform as picture 2 shows. Could you guys help what might …
      LTC6992IS6-1#TRMPBFhardwareSupervisory CircuitsSingle-Supply MonitorsLTC699

    6. LTC6992HS6-1_Out issue

      Forum Thread
      Answered
      Clock and Timing
      25 April, 2022
      Dear team, LTC6992HS6-1 is being tested but Out put signal is nothing.PDF Could you check that there is any problem?(Circuit, PCB) please refer to the attached file(Circuit and Simulation data, PCB ficture) ##test condition. Supply Voltage : +5V Duty cycle : 50% DIVCODE : 2 POL : 0 Ndiv : 16 …

    7. LTC6992 locked to vco

      Forum Thread
      Answered
      Clock and Timing
      13 September, 2018
      Hi Can this be locked to an external oscillator with a more excact frequency error? regards

    8. RE: LTC6992 DIV pin voltage issue

      Forum Reply
      Power Management
      29 April, 2025
      Hi Tonglei, Apologizes for the delayed response. The SET pin is sensitive the leakages and disturbances. The capacitance on the SET pin to GND and DIV pin to GND should be less than 10pf. I recommend separate voltage divider source for MOD input. Thanks, Emrecan

    9. RE: LTC6992 - First Pulse is too short to turn on MOSFET.

      Forum Reply
      Power Management
      23 September, 2024
      Thank you for the information. I think that changing the ramp profile or using the 6992-4 (with some disable circuit) is the way to go to prevent the very short pulses.

    10. RE: LTC6992 - First Pulse is too short to turn on MOSFET.

      Forum Reply
      Power Management
      23 September, 2024
      My minimum PWM duty cycle is 0%. On reflection, I suppose it makes perfect sense to have very short pulses because of this. Using the -4 is a perfectly valid idea, I can still get 100% PWM, and it would only require a small tweak to the schematic to disable …