Research Article
Design and Analysis of a New Carbon Nanotube Full Adder Cell
Table 5
Simulation results for 8-bit ripple carry adder at 0.9 V supply voltage, 20 fF output load, and 300 MHz input frequency.
| | Circuit | (μw) | (μw) | (μw) | (μw) | (μw) | Delay (ns) | PDP (fJ) | Area () | Φ (pJ×) | No Dev. | 1/delay (GHz) |
| | CNT-AFS | 5.67 | 0.2 | 5.87 | 0.002 | 1.18 | 0.995 | 1.17 | 6.1 | 0.0071 | 24 | 1005 | | CNTD4 | 7.4 | 0.33 | 7.73 | 0.012 | 1.56 | 0.91 | 1.42 | 5.7 | 0.0081 | 18 | 1099 | | CNTD3 | 6.9 | 0.21 | 7.11 | 0.008 | 1.43 | 0.9 | 1.29 | 4.4 | 0.0057 | 13 | 1111 | | CNTD2 | 8.5 | 0.44 | 8.94 | 0.015 | 1.80 | 1.1 | 1.98 | 5.5 | 0.0109 | 15 | 909 | | CNTD1 | 15.3 | 0.7 | 16.00 | 0.15 | 3.32 | 1.04 | 3.45 | 16.4 | 0.0566 | 13 | 962 | | AFS | 17.3 | 7.235 | 24.54 | 0.88 | 5.61 | 1.76 | 9.88 | 10.0 | 0.10 | 24 | 568 | | CMOS | 28.9 | 13.545 | 42.45 | 1.64 | 9.80 | 1.26 | 12.35 | 13.0 | 0.16 | 28 | 794 | | Hybrid | 29.395 | 10.6 | 40.00 | 1.17 | 8.94 | 1.92 | 17.16 | 9.9 | 0.17 | 24 | 521 |
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