We detail the design, simulation, layout, and testing of four analog VLSI subaperture centroid circuits for use in an adaptive optics system. Each centroid circuit consists of four large photo-transducers arranged in a 2 x 2 array and two current di erencing circuits. The di erencing circuits compute the location of the image centroid relative to the center of the array in the xand y-directions...

Nowadays, digital communication protocols rely on cryptographic mechanisms to protect sensitive information from unauthorized access and modification. Cryptographic primitives, such as hash functions, block and stream ciphers, are key components of many information security applications, employed to provide privacy, authentication, and data integrity. Following the massive differentiation of mo...

Nowadays, digital communication protocols rely on cryptographic mechanisms to protect sensitive information from unauthorized access and modification. Cryptographic primitives, such as hash functions, block and stream ciphers, are key components of many information security applications, employed to provide privacy, authentication, and data integrity. Following the massive differentiation of mo...

1 Abstract Today most VLSI circuits are built in silicon using CMOS transistors. Developments in design automation and process fabrication have resulted in the progressive increase of the number of transistors per chip and decrease in the size of the transistors. But transistor designers are fast approaching fundamental physical barriers to further size reduction. Thus engineers are looking at ...

In this paper, two high performance full adder circuits are proposed. We simulated these two full adder circuits using Cadence VIRTUOSO environment in 0.18 μm UMC CMOS technology and compared the Power dissipation, time delay, and power delay product (PDP) of the proposed circuits with other 10 transistor full adders. Simulation results show that for the supply voltage of 1.8V, these circuits a...

In the design of low-power circuits, adiabatic logic shows great promise. However, research till date have concentrated on adiabatic logic circuits/families. Today's VLSlsystems integrate random logic, megamodules and memories. Hence, the success of adiabatic circuits will depend on the efficient implementation of not only random logic, but also the other components of a VLSI system. In this pa...

Very Large Scale Integration (VLSI) Systems, 3 (3), 437 (September 1995). Merged Current Switch Logic (MCSL) and Differential Cascode Voltage Switch Logic (DCVSL) are two common structures for differential BiCMOS logic family, that have several potential applications in high-speed VLSI circuits. This paper studies the fault characterization of these BiCMOS circuits. The impact of each possible ...

In this paper, five new multiplexer-based architectures for 1 -bit full adder circuit designs are proposed. Following these architectures, various full adder circuits can be built through different circuit implementations of multiplexers. For instance, in this paper, we demonstrate that by substituting each multiplexer with two transmission gates, a set of new full adder circuits are ready to b...