scholarly journals Design a Low Power and High Speed Parity Checker using Exclusive–or Gates

2021 ◽  
Vol 10 (4) ◽  
pp. 121-125
Author(s):  
Brahmaiah Battula ◽  
Valeti SaiLakshmi ◽  
Karpurapu Sunandha ◽  
S. Durga Sri Sravya ◽  
Putta Vijaya Lakshmi ◽  
...  
Keyword(s):  
Low Power ◽  
High Speed ◽  
Parity Checker ◽  
Previous Design ◽  
Power Delay Product ◽  
Exclusive Or

In the presented paper we designed the parity checker by using EX-OR modules. The two EX-OR modules are presented to design the parity checker and correlated their outcomes based on the constraints like power, area, delay and power delay product (PDP). The previous design is with eight transistors EX-OR, but in the present six transistors EX-OR is used to design the parity checker. While correlating the parity checker design with 8T EX-OR and 6T EX-OR, the 6T EX-OR parity checker design gives optimized power, delay, area and PDP over the 8T EX-OR parity checker design. Simulations are done by using the 130nm mentor graphics tool. Finally the constraints like power, area, delay and PDP gets optimized successfully with the presented technology. Also, alternatively we can replace EXOR modules with NAND modules to design parity checker.

scholarly journals Design a Low Power and High Speed 130nm Fulladder using Exclusive-OR and Exclusive NOR Gates

2021 ◽  
Vol 10 (5) ◽  
pp. 81-86
Author(s):  
Soniya Nuthalapati ◽  
Ranjitha P.V.Sai ◽  
Radhika Rani Kalapala ◽  
Lourdu Sasi Rekha Lingisetty ◽  
Sirisha Mekala ◽  
...  
Keyword(s):  
Low Power ◽  
Composite Structures ◽  
High Speed ◽  
Full Adder ◽  
Power Requirement ◽  
Pass Transistor ◽  
Power Delay Product ◽  
Exclusive Or ◽  
Full Swing ◽  
Design Power

This literature illustrates the high speed and low power Full Adder (FADD) designs. This study relates to the composited structure of FADD design composed in one unit. In this the EXCL-OR/EXCL-NOR designs are used to design the FADD. Mostly concentrates on high speed standard FADD structure by combining the EXCL-OR/EXCL-NOR design in single unit. We implemented two composite structures of FADD through the full swing EXCL-OR/EXCL-NOR designs. And the EXCL-OR/EXCL-NOR design is done through pass transistor logic (PTL) and the same design projected on the composited FADD design. Such that the delay, area of the design, power requirement for the circuit gets optimized. The two composited FADD designs are compared and reduced the constraints of power requirement, area, delay and the power delay product (PDP). The simulated outcomes are verified through 130nnm CMOS mentor graphics tool.

Performance Analysis of Various Multipliers Using 8T-full Adder with 180nm Technology

2020 ◽  
Vol 13 (6) ◽  
pp. 864-870
Author(s):  
Sai Venkatramana Prasada G.S ◽  
G. Seshikala ◽  
S. Niranjana
Keyword(s):  
Low Power ◽  
Power Dissipation ◽  
High Speed ◽  
High Performance ◽  
Full Adder ◽  
Fundamental Operation ◽  
Wallace Tree ◽  
Power Delay Product ◽  
The Comparative Study ◽  
Wallace Tree Multiplier

Background: This paper presents the comparative study of power dissipation, delay and power delay product (PDP) of different full adders and multiplier designs. Methods: Full adder is the fundamental operation for any processors, DSP architectures and VLSI systems. Here ten different full adder structures were analyzed for their best performance using a Mentor Graphics tool with 180nm technology. Results: From the analysis result high performance full adder is extracted for further higher level designs. 8T full adder exhibits high speed, low power delay and low power delay product and hence it is considered to construct four different multiplier designs, such as Array multiplier, Baugh Wooley multiplier, Braun multiplier and Wallace Tree multiplier. These different structures of multipliers were designed using 8T full adder and simulated using Mentor Graphics tool in a constant W/L aspect ratio. Conclusion: From the analysis, it is concluded that Wallace Tree multiplier is the high speed multiplier but dissipates comparatively high power. Baugh Wooley multiplier dissipates less power but exhibits more time delay and low PDP.

Low-Power and Area-Efficient Parallel Multiplier Design Using Two-Dimensional Bypassing

2016 ◽  
Vol 26 (02) ◽  
pp. 1750030 ◽  
Author(s):  
Pankaj Kumar ◽  
Rajender Kumar Sharma
Keyword(s):  
Signal Processing ◽  
Low Power ◽  
High Speed ◽  
Digital Signal ◽  
Cmos Technology ◽  
Two Dimensional ◽  
Efficient Design ◽  
Parallel Multiplier ◽  
Power Delay Product ◽  
Area Efficient

To develop low-power, high-speed and area-efficient design for portable electronics devices and signal processing applications is a very challenging task. Multiplier has an important role in digital signal processing. Reducing the power consumption of multiplier will bring significant power reduction and other associated advantages in the overall digital system. In this paper, a low-power and area-efficient two-dimensional bypassing multiplier is presented. In two-dimensional bypassing, row and column are bypassed and thus the switching power is saved. Simulation results are realized using UMC 90[Formula: see text]nm CMOS technology and 0.9[Formula: see text]V, with Cadence Spectre simulation tool. The proposed architecture is compared with the existing multiplier architectures, i.e., Braun’s multiplier, row bypassing multiplier, column bypassing multiplier and row and column bypassing multiplier. Performance parameters of the proposed multiplier are better than the existing multipliers in terms of area occupation, power dissipation and power-delay product. These results are obtained for randomly generated input test patterns having uniform distribution probability.

scholarly journals IMPLEMENTATION OF HIGH SPEED-LOW POWER TRUNCATION ERROR TOLERANT ADDER

2015 ◽  
pp. 239-244
Author(s):  
SYAM KUMAR NAGENDLA ◽  
K. MIRANJI
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
High Speed ◽  
Critical Path ◽  
Processing System ◽  
Digital Signal ◽  
Signal Processing System ◽  
Speed Performance ◽  
Power Delay Product ◽  
Dsp Systems

Now a Days in modern VLSI technology different kinds of errors are invitable. A new type of adder i.e. error tolerant adder(ETA) is proposed to tolerate those errors and to attain low power consumption and high speed performance in DSP systems. In conventional adder circuit, delay is mainly certified to the carry propagation chain along the critical path, from the LSB to MSB. If the carry propagation can be eliminated by the technique proposed in this paper, a great improvement in speed performance and power consumption is achieved. By operating shifting and addition in parallel, the error tolerant adder tree compensates for the truncation errors. To prove the feasibility of the ETA, normal addition operation present in the DFT or DCT algorithm is replaced by the proposed addition arithmetic and the experimental results are shown. In this paper we propose error tolerant Adder (ETA). In the view of DSP applications the ETA is able to case the strict restriction on accuracy, speed performance and power consumption when compared to the conventional Adders, the proposed one provides 76% improvement in power-delay product such a ETA plays a key role in digital signal processing system that can tolerate certain amount of errors.

Design and Implementation of 8x8 Multiplier using 4-2 Compressor and 5-2 Compressor

2016 ◽  
Vol 5 (3) ◽  
pp. 131 ◽  
Author(s):  
K. Hari Kishore ◽  
K. Akhil ◽  
G. Viswanath ◽  
N. Pavan Kumar
Keyword(s):  
Low Power ◽  
High Speed ◽  
Electronic Device ◽  
Logic Gates ◽  
Partial Product ◽  
Transmission Gate ◽  
Design And Implementation ◽  
Wallace Tree ◽  
Minimum Delay ◽  
Power Delay Product

In this paper, a 8x8 multiplier is realized by using 4-2 and 5-2 compressors. Low-power high speed 4-2 compressors and 5-2 compressors are extensively utilized for numerical realizations. Both the compressors circuits that is the 4-2 compressor circuit and 5-2 compressor circuit internally consist of the logic gates i.e. the XOR and XNOR gates.  4-2 compressor circuit has been designed uses a brand new partial-product reduction format that consecutively reduces the utmost output new style of number needs less variety of MOSFET’s compared to Wallace Tree Multipliers. The 4-2 compressor used is created from high-speed and consists of logic gates XOR and XNOR gates and transmission gate primarily based electronic device. The regular delay and switching energy also called as power-delay product (PDP) is differentiated with the 5-2 compressor enforced with 4-2 Compressors and while not compressors, and is evidenced to own minimum delay and PDP. Simulations are performed by mistreatment Xilinx ten.1 ISE.

scholarly journals The Design of Low-Power High-Speed Two-Level Three Input XOR gate

2020 ◽  
Vol 9 (5) ◽  
pp. 1813-1818
Keyword(s):  
Low Power ◽  
High Speed ◽  
High Performance ◽  
Supply Voltage ◽  
Propagation Delay ◽  
Signal Frequency ◽  
Xor Gate ◽  
Input Signal Frequency ◽  
Transmission Gates ◽  
Exclusive Or

The Large Fan-In and high performance gates are essential to make portable electronic devices. In this paper an efficient realization of three input two level XOR(Exclusive-OR) is presented. The design of low power and high speed proposed XOR gate involves the combination of pass and transmission gates. The main objective to achieve this is based on the selection of input signals to propagate and maintain the good logic swing. Two methods were used to design proposed XOR, one (i.e. Pass_gate) is purely based on pass transistors with 8 MOSFET’s and second method(Modified_Pass_gate) uses transmission gates with 12 transistors. The Modified_Pass_gate offers 86.14% and 6.66% of power dissipation reduction compared to static and Pass_gate XOR respectively and 77.18% and 50.94% less propagation delay compared to static and Pass_gate XOR respectively, at the supply voltage of 0.7v with input signal frequency of 3GHz. The simulation is performed based on 32nm technology node(PTM-models) using Hspice Synopsis simulation tool.

scholarly journals Noise measurement in high-speed domino pseudo-CMOS keeper

2018 ◽  
Vol 52 (1-2) ◽  
pp. 20-27
Author(s):  
R Jaikumar ◽  
P Poongodi
Keyword(s):  
Low Power ◽  
High Speed ◽  
Noise Immunity ◽  
Delay Reduction ◽  
Power Dynamic ◽  
Unity Noise Gain ◽  
Power Delay Product ◽  
The Cost ◽  
Domino Circuits ◽  
Or Gate

Noise immunity is the foremost issue in high-speed domino circuits. In general, better noise immunity is achieved at the cost of speed and power degradation. In this paper, pseudo-dynamic keeper design is proposed to reduce the delay and power with improved noise immunity for domino circuits. The proposed technique is able to achieve reduced delay, power consumption, and better noise immunity by using always ON keeper. The simulation results show that the proposed technique exhibits 41%, 39%, and 19% delay reduction when compared with the low power dynamic circuit for two-input OR gate, two-input EX-OR gate, and 4:1 multiplexer. The proposed logic also performs better as compared to a low power dynamic circuit with 24%, 21%, and 14% reduction in power-delay product for two-input OR gate, two-input EX-OR gate, and four input MUX, respectively. The unity noise gain is also improved as compared to all other existing methods.

scholarly journals Simple Exact Algorithm for Transistor Sizing of Low-Power High-Speed Arithmetic Circuits

VLSI Design ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-17 ◽  
Author(s):  
Tooraj Nikoubin ◽  
Poona Bahrebar ◽  
Sara Pouri ◽  
Keivan Navi ◽  
Vaez Iravani
Keyword(s):  
Integrated Circuits ◽  
Low Power ◽  
High Speed ◽  
Exact Algorithm ◽  
Full Adder ◽  
Chip Area ◽  
Transistor Sizing ◽  
Simulation Speed ◽  
Optimization Parameters ◽  
Power Delay Product

A new transistor sizing algorithm, SEA (Simple Exact Algorithm), for optimizing low-power and high-speed arithmetic integrated circuits is proposed. In comparison with other transistor sizing algorithms, simplicity, accuracy, independency of order and initial sizing factors of transistors, and flexibility in choosing the optimization parameters such as power consumption, delay, Power-Delay Product (PDP), chip area or the combination of them are considered as the advantages of this new algorithm. More exhaustive rules of grouping transistors are the main trait of our algorithm. Hence, the SEA algorithm dominates some major transistor sizing metrics such as optimization rate, simulation speed, and reliability. According to approximate comparison of the SEA algorithm with MDE and ADC for a number of conventional full adder circuits, delay and PDP have been improved 55.01% and 57.92% on an average, respectively. By comparing the SEA and Chang's algorithm, 25.64% improvement in PDP and 33.16% improvement in delay have been achieved. All the simulations have been performed with 0.13 m technology based on the BSIM3v3 model using HSpice simulator software.

scholarly journals Design and Analysis of Multipliers using Radix-8 Booth Encoding Technique for Low Power and Area Consumption

2019 ◽  
Vol 9 (2) ◽  
pp. 2630-2635
Keyword(s):  
Low Power ◽  
High Speed ◽  
High Performance ◽  
Low Power Design ◽  
Low Complexity ◽  
Approximate Computing ◽  
New Methodologies ◽  
Power Delay Product ◽  
Booth Encoder ◽  
Complex Multiplier

As innovation scaling is arriving at its points of confinement, new methodologies have been proposed for computational efficiency. Different techniques have been proposed with advancements in technology to model high-speed along with low power consumption and smaller area multipliers. For the radix-4 booth propagation algorithm for low-power and low complexity applications, an efficient approximate 8 bit redundant multiplier is used. To minimize the complication present in modified booth encoder, approximate Booth RB encoders have been introduced by modifying the truth table with incorrect bits, which resulted in a reduction of the power delay product. Approximate computing is a relevant technique for low power and high performance circuits as used in error-tolerant applications. Approximate or inexact computing is an attractive design methodology for low power design but accomplished by loosening up the necessity of precision. It becomes critical to maintain full accuracy to attain reduced power utilization. In this paper, the design of approximate redundant binary (RB) multipliers is studied and modified to build less complex multiplier with Radix-8 modified booth encoding technique to reduce area and complexities of architectures.

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