Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...
Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...
Accurate PLL Characterization Using Virtuoso Spectre RF Noise ...
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27<br />
Conclusions<br />
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Cadence <strong>Spectre</strong><strong>RF</strong> <strong>Noise</strong>-aware <strong>PLL</strong> flow predicts the phase noise<br />
of a <strong>PLL</strong>-based frequency synthesizer using a simulation method<br />
that is both accurate and efficient.<br />
For each block, the phase noise is extracted and applied to a<br />
phase-domain model for the entire <strong>PLL</strong>.VCO phase noise is<br />
accurately characterized using advanced perturbation technology<br />
(PPV).<br />
Strengths of this flow (automatic calibration, greatly improved<br />
simulation time without loss of accuracy, direct plotting capability of<br />
<strong>PLL</strong> metrics) were presented.<br />
Compared to traditional approaches, experimental data confirmed a<br />
significant speed-up with comparable accuracy.<br />
September 17, 2007