An enhanced Gate Diffusion Input technique for low power applications

Radhakrishnan, S.; Nirmalraj, T.; Karn, Rakesh Kumar

doi:10.1016/j.mejo.2019.104621

Cited by 3 publications

(2 citation statements)

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“…Nowadays, the Gate Diffusion Input (GDI) method of implementing logic functions has become quite popular for implementing low power circuits [55][56][57][58]. GDI method was first introduced in [59] which later became a popular method for VLSI circuit design [60].…”

Section: Hybrid Logic Full Addersmentioning

confidence: 99%

“…4d, CPL [25], 14-T [37], and GDI1 [64] FAs are the representatives from low drive power FA group. TFA [34], HBD 7 [50], and HBD 10 [53] represent moderate drive power FA group whereas ULPHA [42], HBD 8 [51], and GDI 2 [55] represent high drive power FA. It can be seen that, with increasing fan-outs, propagation delays for moderate drive power FAs rise at a higher pace compared to the graphs representing high drive power FAs.…”

Section: Performance Of Fas In Various Load Conditionsmentioning

confidence: 99%

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Comprehensive study of 1-Bit full adder cells: review, performance comparison and scalability analysis

et al. 2021

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Full Adder (FA) circuits are integral components in the design of Arithmetic Logic Units (ALUs) of modern computing systems. Recently, there have been massive research interests in this area due to the growing need for low-power and high-performance computing systems. Researchers have proposed a variety of FA cells with diverse design techniques, each having its pros and cons. As a result, a systematic method for performance comparison of FA cells using a common simulation platform has become necessary. In this work, we present an extensive study of FA cells. We have compared the performance of thirty-three (33) existing 1-bit FA cells. The drive powers of these FA cells have been compared by applying a variety of load conditions. In addition, the 1-bit FA cells have been extended to 32-bit structures to test their scalability and to investigate their performance in wide-word structures. We have determined that twenty-one (21) of the thirty-three (33) FA cells cannot operate in a 32-bit structure, even though some of them exhibit excellent performance as a 1-bit cell. The main finding of this research is that the single-bit performance parameters of FA cells should not be considered as the main basis for performance comparison. Any FA cell should be analyzed in a multi-bit structure to determine its practical effectiveness.

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