Graph-Based Symbolic Technique and Its Application in the Frequency Response Bound Analysis of Analog Integrated Circuits

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Circuit </td><td align="center">PGRAD</td><td align="center">SPG</td><td align="center">HSPICE</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Differential pair</td><td align="center">15.312 ms</td><td align="center">16.363 ms</td><td align="center">1.716 s</td></tr><tr><td align="left">2-stage OTA</td><td align="center">44.559 ms</td><td align="center">91.936 ms</td><td align="center">81.65 ms</td></tr><tr><td align="left">3-stage OTA</td><td align="center">38.315 ms</td><td align="center">39.233 ms</td><td align="center">2.163 s</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Time comparison between the variational methods and HSPICE.

The Scientific World Journal

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Table 2

Table 2: Graph-Based Symbolic Technique and Its Application in the Frequency Response Bound Analysis of Analog Integrated Circuits 