Digital circuit design is streamlined process used to improve the performance of a circuit for a particular application. Fast speed, minimum power dissipation and less area are the desirable characteristics of a digital circuit, in general. To meet a particular standard of speed, a compromise in power dissipation and speed is required. Timing elements such as Flip-flop are used as clock generat...

In this paper, we propose a level shifter circuit capable of handling a wide input voltage range. The circuit is based on a conventional two-stage comparator, and has a distinctive feature in that it operates a current amplification scheme for ultra low-power operation. The proposed circuit can convert low-voltage input digital signals into high-voltage output digital signals. The circuit achie...

We propose and analyze the error and timing of solvers consisting of both analog and digital circuitry for sparse linear systems of equations. We obtain high speed, but low precision from the analog circuits. We combine this with low speed, but high precision from the digital circuits. The hybrid circuit should be faster than digital circuits alone. As a preconditioner to standard iterative sol...

In this paper we design of an adaptive Nero fuzzy system with mixed-signal inputs and digital outputs. In this paper analog advantages including low die area, high speed and simplicity are added to the digital advantages, such as programmability, robust against noise and distortions. a new programmable Fuzzifier circuit based on mixed-signal input, and min circuit for inference and Multiplier/D...

Low power and high speed digital circuits are basic needs for any of digital circuit; De-multiplexer is a basic circuit for any digital circuit. In this paper demultiplexer has been designed using CMOS, transmission gate pseudo nmos logic. The performance of designs has been compared in terms of power consumption, delay and transistor counts. The proposed design demonstrates the superiority in ...

In this paper, the importance and perspective for the digitally-assisted analog and RF circuits are discussed, especially related to wireless transceivers. Digital calibration techniques for compensating I/Q mismatch, IM2, and LO impairments in cellular, 2.4GHz WiFi, and 60GHz WiGig transceivers are introduced with detailed analysis and circuit implementations. Future technology directions such...

Digital circuit redesign is a task that requires knowledge of CirCUit structure, function, and purpose, and of the interrelationships among these We describe a knowledge-based system, REDESIGN, which assists In the redesign of digital circuits to meet altered functlonal specifications. REDESIGN assists the user in focusing on an appropriate portion of the circuit, generating possible local chan...

This work studies the effects of dynamic threshold design techniques on the speed and power of digital circuits. A new dynamic threshold transistor structure has been proposed to improve performances of digital circuits. The proposed switched-capacitor dynamic threshold PMOS (SC-DTPMOS) scheme employs a capacitor along with an NMOS switch in order to effectively reduce the threshold voltage of ...

Digitization of modern world has led to increasing use of digital equipment. The pioneer equipment in this regard is Digital Pulse Width Modulators. Although there is limit on clock frequency which is to be used in digital circuit. This paper describes simple Digital Pulse Width Modulator with optimized Area using Field Programmable Gate Arrays (FPGA). The proposed architecture uses a phase shi...

Unlike the classical deterministic digital circuit analysis, we consider the analysis of uncertain digital circuits defined as follows. Given a binary function of n uncertain input binary variables, we express the probability of this binary function in terms of the probabilities of the corresponding input binary variables. This in turn, allows us to estimate appropriate probabilistic measure of...