This paper presents an analog VLSL circuit for implementation of Artificial Neural Networks (ANNs ). The building blocks of the proposed circuit include Differential voltage current controlled source (DVCCS), Super MOSFET and Differential voltage controlled voltage source (DVCVS) which are used to multiply incoming analog signals with variable weights, and current in / current out sigmoid funct...

Abstract Digital-to-analog converters are crucial building blocks for telecommunication applications. For this kind of applications, the traditional static performance requirements do not apply. The dynamic performance is of the greatest importance. This paper discusses the aspects of the performance of CMOS digital-to-analog converters and models the influence of non-idealities of circuit comp...

Motivated by the potential to reuse the architecture in place for an analog sum-product decoder, and thus reduce circuit space, we show how an analog encoder may be constructed for a class of reversible LDPC codes. We review the basic building blocks of analog decoder design for subthreshold CMOS circuits and then show how these components may be reused for encoding. We present an encoder circu...

NTSC composite color video is currently one of the most common formats of video broadcasting. Although the signal is analog, it can be decoded almost entirely digitally. Analog decoders offer limited video quality and require adjustments. Using digital techniques to implement NTSC decoding offers minimum adjustments and excellent video quality. This project presents the building blocks of digit...

The purpose of this paper is to present an automated design methodology for analog blocks. This method focuses on analog blocks design parameters automatic generation according to specific design constraints. This method is based on analog circuits’ mathematical models. These models are generated thanks to a “Design Of Experiment” (DOE) technique. The DOE technique takes as input electrical sim...

The design of a low-voltage current-mode Morlet Wavelet, using MOS transistors in weak inversion, is presented. The proposed design is based on two translinear building blocks: a normalized gaussian-function generator and a four-quadrant analog-multiplier. Simulation results using BSIM3.v3 model for a 0.6μm AMS process parameters, in a CADENCE environment, are presented.

Analog and mixed-signal integrated circuits are rapidly becoming more complex. In addition to the traditional problems associated with testing ICs, such as limited controllability and observability, analog and mixed-signal test is vulnerable to measurement induced errors. Constraints on measuring analog signals signiicantly increase the complexity and cost of testers for such circuits. In this ...

Over-sampling sigma-delta analog-to-digital converters (ADCs) are one of the key building blocks of state of the art wireless transceivers, especially with the voice communication system. This paper addresses a brief review for designing a Sigma-Delta modulator. A Genetic Algorithm (GA) based 2 order Sigma-Delta modulator design is proposed.

Precision rectifiers are important building blocks for analog signal processing. The traditional approach based on diodes and operational amplifiers (OpAmps) exhibits undesirable effects caused by limited OpAmp slew rate and diode commutations. In the paper, a full-wave rectifier based on one CDTA and two Schottky diodes is presented. The PSpice simulation results are included.