Operational amplifiers are important building blocks for analog circuit design. Unfortunately, their limited performance such as bandwidth, slew-rate etc. leads the analog designer to search other possibilites and other building blocks. As a result, new current-mode active building blocks such as operational transconductance amplifiers (OTA), second generation current conveyors (CCII), current-...

A flexible, reconfigurable receiver architecture that extends the direct conversion architecture is presented. The receiver structure is based on high dynamic range/lowpower Σ∆ analog-to-digital converters (ADC) and digital signal processing functions implemented locally on the radio frequency integrated circuit (RFIC). This relaxes requirements for the analog part of the receiver and enables c...

Abstract: This paper presents a brief introduction and review of some prominent current mode building blocks, which have been finding prominent attention in the area of analog signal processing. Some exemplary hardware implementations of a selected number of building blocks such as op-amp, OTA, CCI, CCII, FTFN, DDA, CFOA, CCIII, DDCC, DOCC, MOCC, DVCC, ICCII, FDCCII, OTRA, CDBA and CDTA have be...

Abstract: The present work deals with voltage differencing current conveyor and its application in analog circuit design. There have been several major developments in the area of analog circuits which have taken place during the past four decades. There is a bulk of material available about the various active blocks developed past Current Conveyors.Among various modern active building blocks, ...

The integrated circuit has, since it was invented in the late 1950’s, undergone a tremendous development and is today found in virtually all electric equipment. The small feature size and low production cost have made it possible to implement electronics in everyday objects ranging from computers and mobile phones to smart prize tags. Integrated circuits are typically used for data communicatio...

This work discusses the use of an Evolvable Hardware (EHW) platform in the synthesis of analog electronic circuits for Fuzzy Logic Controllers. A Fuzzy Logic Controller (FLC) is defined by a collection of fuzzy if-then rules and a set of membership functions characterizing the linguistic terms associated with the inputs and output of the FLC. The EHW analog platform, named PAMA-NG (Programmable...

We present an electronic system whose architecture follows a neural fuzzy structure for computing in parallel a Fuzzy CMeans process. The electronic design in this work is oriented to build an analog protoptype employing standard integrated circuits in bipolar technolgy and a floating-gate nMOS transistor array. Estimation of electrical performance of building blocks in this system is done by s...

The mixed-signal circuits with both analog and digital blocks on a single chip have wide applications in communication and RF circuits. Integrating these two blocks can cause serious problems especially in applications requiring fast digital circuits and high performance analog blocks. Fast switching in digital blocks generates a noise which can be introduced to analog circuits by the common su...

We present in this paper an overview of circuit techniques dedicated to design reliable low-voltage (1-V and below) analog functions in deep submicron standard CMOS processes. The challenges of designing such low-voltage and reliable analog building blocks are addressed both at circuit and physical layout levels. State-ofthe-art circuit topologies and techniques (input level shifting, bulk and ...

the mixed-signal circuits with both analog and digital blocks on a single chip have wide applications in communication and rf circuits. integrating these two blocks can cause serious problems especially in applications requiring fast digital circuits and high performance analog blocks. fast switching in digital blocks generates a noise which can be introduced to analog circuits by the common su...