LMX2492 Datasheet, PDF (31/41 Pages) Texas Instruments – -227 dBc/Hz Normalized PLL Noise

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LMX2492, LMX2492-Q1
SNAS624A – MARCH 2014 – REVISED JUNE 2014
The actual measured waveform for this is shown in the following figure. Note that the frequency that was actually
measured was from the divide by two output of the VCO and therefore the measured frequency was half of the
actual frequency presented to the PLL. The flattened top and bottom of this triangle wave help mitigate the
overshoot and undersoot in the frequency.
The actual measured waveform for this is shown in the following figure. Note that the frequency that was actually
measured was from the divide by two output of the VCO and therefore the measured frequency was half of the
actual frequency presented to the PLL. The flattened top and bottom of this triangle wave help mitigate the
overshoot and undersoot in the frequency.
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