Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits
In high-speed applications, MOS current mode logic (MCML) is a good alternative. Scaling down supply voltage of the MCML circuits can achieve low power-delay product (PDP). However, the current almost all MCML circuits are realized with dual-rail scheme, where the NMOS configuration in series limits...
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Wiley
2014-01-01
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| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/836019 |
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| author | Ruiping Cao Jianping Hu |
| author_facet | Ruiping Cao Jianping Hu |
| author_sort | Ruiping Cao |
| collection | DOAJ |
| description | In high-speed applications, MOS current mode logic (MCML) is a good alternative. Scaling down supply voltage of the MCML circuits can achieve low power-delay product (PDP). However, the current almost all MCML circuits are realized with dual-rail scheme, where the NMOS configuration in series limits the minimum supply voltage. In this paper, single-rail MCML (SRMCML) circuits are described, which can avoid the devices configuration in series, since their logic evaluation block can be realized by only using MOS devices in parallel. The relationship between the minimum supply voltage of the SRMCML circuits and the model parameters of MOS transistors is derived, so that the minimum supply voltage can be estimated before circuit designs. An MCML dynamic flop-flop based on SRMCML is also proposed. The optimization algorithm for near-threshold sequential circuits is presented. A near-threshold SRMCML mode-10 counter based on the optimization algorithm is verified. Scaling down the supply voltage of the SRMCML circuits is also investigated. The power dissipation, delay, and power-delay products of these circuits are carried out. The results show that the near-threshold SRMCML circuits can obtain low delay and small power-delay product. |
| format | Article |
| id | doaj-art-8482070b8a444b1bac8a7c09eb7cfff6 |
| institution | Kabale University |
| issn | 2090-0147 2090-0155 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | Journal of Electrical and Computer Engineering |
| spelling | doaj-art-8482070b8a444b1bac8a7c09eb7cfff62025-02-03T05:45:32ZengWileyJournal of Electrical and Computer Engineering2090-01472090-01552014-01-01201410.1155/2014/836019836019Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML CircuitsRuiping Cao0Jianping Hu1Institute of Micro-Nano Electronic Systems, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, ChinaInstitute of Micro-Nano Electronic Systems, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang 315211, ChinaIn high-speed applications, MOS current mode logic (MCML) is a good alternative. Scaling down supply voltage of the MCML circuits can achieve low power-delay product (PDP). However, the current almost all MCML circuits are realized with dual-rail scheme, where the NMOS configuration in series limits the minimum supply voltage. In this paper, single-rail MCML (SRMCML) circuits are described, which can avoid the devices configuration in series, since their logic evaluation block can be realized by only using MOS devices in parallel. The relationship between the minimum supply voltage of the SRMCML circuits and the model parameters of MOS transistors is derived, so that the minimum supply voltage can be estimated before circuit designs. An MCML dynamic flop-flop based on SRMCML is also proposed. The optimization algorithm for near-threshold sequential circuits is presented. A near-threshold SRMCML mode-10 counter based on the optimization algorithm is verified. Scaling down the supply voltage of the SRMCML circuits is also investigated. The power dissipation, delay, and power-delay products of these circuits are carried out. The results show that the near-threshold SRMCML circuits can obtain low delay and small power-delay product.http://dx.doi.org/10.1155/2014/836019 |
| spellingShingle | Ruiping Cao Jianping Hu Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits Journal of Electrical and Computer Engineering |
| title | Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits |
| title_full | Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits |
| title_fullStr | Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits |
| title_full_unstemmed | Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits |
| title_short | Near-Threshold Computing and Minimum Supply Voltage of Single-Rail MCML Circuits |
| title_sort | near threshold computing and minimum supply voltage of single rail mcml circuits |
| url | http://dx.doi.org/10.1155/2014/836019 |
| work_keys_str_mv | AT ruipingcao nearthresholdcomputingandminimumsupplyvoltageofsinglerailmcmlcircuits AT jianpinghu nearthresholdcomputingandminimumsupplyvoltageofsinglerailmcmlcircuits |