Simultaneous Switching Output (SSO) Analysis Using Xilinx Virtex-4 ...
Simultaneous Switching Output (SSO) Analysis Using Xilinx Virtex-4 ...
Simultaneous Switching Output (SSO) Analysis Using Xilinx Virtex-4 ...
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<strong>SSO</strong> Description<br />
� <strong>SSO</strong> is the noise due to several I/O pins switching at the same time<br />
� Induced voltage due to changing current in lead pins<br />
� <strong>Simultaneous</strong> switching noise can be attributed to<br />
� Poor signal to ground ratio<br />
� Return path discontinuity<br />
� The following factors can help contain <strong>SSO</strong><br />
� Avoid return path discontinuities<br />
� Minimize total inductance of return path and keep it low<br />
� On-die decoupling capacitor strategy to cancel inductive noise
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