Sleep signal controlled footless domino circuit for low leakage current
ISSN: 0305-6120
Article publication date: 8 March 2018
Issue publication date: 19 April 2018
Abstract
Purpose
This paper aims to propose a new sleep signal controlled footless domino circuit for reducing the subthreshold and gate oxide leakage currents.
Design/methodology/approach
In the proposed circuit, a P channel MOSFET (PMOS) sleep switch transistor is inserted between the power supply and the output node. The sleep transistor, the source of the pull-down network, and the source of the N channel MOSFET (NMOS) transistor of the output inverter are controlled by this additional sleep signal to place the footless domino circuit in a low leakage state.
Findings
The authors simulate the proposed circuit by using HSPICE in 45-nm CMOS technology for OR and AND logic gates such as OR2, OR4, OR8, AND2 and AND4 at 25°C and 110°C. The proposed circuit reduces leakage power consumption as compared to the existing circuits.
Originality/value
The proposed circuit significantly reduces the total leakage power consumption up to 99.41 and 99.51 per cent as compared to the standard dual-threshold voltage footless domino circuits at 25°C and 110°C, respectively, and up to 93.79 and 97.98 per cent as compared to the sleep control techniques at 25°C and 110°C, respectively. Similarly, the proposed circuit reduces the active power consumption up to 26.76 and 86.25 per cent as compared to the standard dual-threshold voltage and sleep control techniques footless domino circuits at 25°C and 110°C, respectively.
Keywords
Citation
Pandey, A.K., Gupta, T.K. and Verma, P.K. (2018), "Sleep signal controlled footless domino circuit for low leakage current", Circuit World, Vol. 44 No. 2, pp. 87-98. https://doi.org/10.1108/CW-06-2017-0030
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited