Low Power Sub Threshold QDI Kogge Stone Adder using Sense Amplifier Lector based Half Buffer Cell Templates
G Srikanth1, Bhanu Murthy Bhaskar2

1G Srikanth, CMR Technical Campus, India.

2Bhanu Murthy Bhaskar, Professor, Majmaah University, Riyaad, India.

Manuscript received on 05 September 2019 | Revised Manuscript received on 14 September 2019 | Manuscript Published on 26 October 2019 | PP: 173-179 | Volume-8 Issue-11S2 September 2019 | Retrieval Number: K102809811S219/2019©BEIESP | DOI: 10.35940/ijitee.K1028.09811S219

Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Nowadays power consumption has the highest priority in designing high-performance electronics systems. The main purpose of this paper is to present a 16-bitKogge-Stone Adder where the low control operation is attained by the decrease of exchanging action. In this paper, we propose a method called Sense amplifier Lector based Half-Buffer (SALHB) by exemplifying Sense Amplifier Half Buffer (SAHB) with LECTOR algorithm to lessen leakage current in circuit structure. A 16-piece Kogge Stone Adder (KSA) is structured and actualized utilizing an asynchronous Quasi-Delay-Insensitive cell configuration approach known as the SALHB algorithm. Generally, SAHB is an asynchronous QDI configuration approach which applies 4-phase signaling protocol and sub-edge operation to obtain low control dissipation and rapid of operation. Additionally, LECTOR algorithm is applied to SAHB configuration approach through which leakage current can be decreased further to a great degree. A portion of the asynchronous QDI cell templates are Pre-charged Half-buffer(PCHB) and Autonomous signal validity Half-buffer(ASVHB), as both the templates, use completion detector circuits which lead to high power dissipation and large area overhead. SAHB design surpasses these drawbacks. But, SAHB has more leakage current. Hence, SALHB method was proposed to overcome the problem of high leakage current. In this paper, the performance of KSA is analyzed in terms of power, delay, energy, rise time, fall time, settle time, duty cyle, throughput and slew rate.

Keywords: Asynchronous, QDI, PVT, Low Power, SAHB, KSA, PCHB, ASVHB, LECTOR.
Scope of the Article: Low-power design