This paper provides a solution for a self-powered light direction detection with digitized output. Light direction sensors, energy harvesting photodiodes, real-time adaptive tracking digital output unit and other necessary circuits are integrated on a single chip based on a standard 0.18 µm CMOS process. Light direction sensors proposed have an accuracy of 1.8 degree over a 120 degree range. In...

This paper describes a transistor sizing methodology for both analog and digital CMOS circuits. Various techniques are used for power optimization in CMOS VLSI circuits. Transistor sizing is one of the important techniques for the determination of circuit performance. The aim of the power optimization is to minimize the power and power-delay product or the energy consumption of the circuit. Thu...

Versatile dual-mode class-AB CMOS four-quadrant analog multiplier circuit is presented. The dual translinear loops and current mirrors are the basic building blocks in realization scheme. This technique provides; wide dynamic range, wide-bandwidth response and low power consumption. The major advantages of this approach are; its has single ended inputs; since its input is dual translinear loop ...

The linearity of the CMOS is of major concern in the design of many analog circuits. In this paper the nonlinearity behavior of CMOS analog integrated circuits is investigated.The basic building block of analog integrated circuits such as differential amplifier with current mirror load have been chosen for harmonic distortion analysis.A mechanism to analyze the distortion of CMOS circuits in de...

A high-speed low power scalable programmable dual modulus digital CMOS frequency divider architecture is proposed. The unique frequency divider architecture includes a high speed parallel counter with State Excitation Module, a switchover trigger circuit, a modulus switchover circuit and a reloader circuit. The mode switchover circuit has two sets of external programmable inputs for two alterna...

The least mean square (LMS) algorithm has practical problems in the analog domain mainly due to dc offset effects. If digital LMS adaptation is used, a digitizer (analog-to-digital converter or comparator) is required for each gradient signal as well as the filter output. Furthermore, in some cases the state signals are not available anywhere in the analog signal path necessitating additional a...

The Integrated Circuit Technology(IC) is growing day by day to improve circuit performance. Quantum dot cellular automata (QCA) is one of the noval technology in nano electronics, introduced to overcome the scaling limitations takes place in CMOS Technology. This technology is suitable for development of ultra-dense low-power high-performance digital circuits. In this paper we are implementing ...