Synthetic biology has created oscillators, latches, logic gates, logarithmically linear circuits, and load drivers that have electronic analogs in living cells. The ubiquitous operational amplifier, which allows circuits to operate robustly and precisely has not been built with biomolecular parts. As in electronics, a biological operational-amplifier could greatly improve the predictability of ...

In this paper a high resistant EMI interference CMOS operational amplifier has been designed and simulated. It is designed by implementing easy modification of the differential pair with active current load. The power amplifier seems to be leading the output voltage power with respect to the input supply given, the two stage power amplifier was designed in this current technology and results ar...

With the dramatic increase in the number of transistors on a chip and the increasing needs for battery-powered applications, low-voltage circuit design techniques have been widely studied in recent year. However, these low supply voltage research efforts have been focused mainly on digital circuits, especially on high density memory circuits. Reported success in achieved high performance low vo...

A technique for low-voltage CMOS analog circuit design is presented in this paper. In this technique, voltage sources are added in series with the gates of the MOS transistors to lower the effective threshold voltages of the transistors. With the lowered effective threshold voltage, it is possible to build a host of analog circuit that operates with a decreased supply voltage. A 0.6V ultra-low ...

Now-a-days there are many digital and analog circuits that are implemented by CMOS VLSI technology. Currently CMOS VLSI is progressing at fast rate and dominating most of the market. The low voltage VLSI circuits represent the electronic of the future. All electronics products are striving to reduce power consumption, to create more economical and efficient devices. For deep sub-micron CMOS tec...

A high-swing, high-performance CMOS telescopic operational amplifier is described. The high swing of the op-amp is achieved by employing the tail and current source transistors in the deep linear region. The resulting degradation in differential gain, common-mode rejection ratio (CMRR), and other amplifier characteristics are compensated by applying regulatedcascode differential gain enhancemen...

Introduction: Recent research shows a high demand for highly linear operational transconductance amplifiers (OTAs) with an aim to reduce total harmonic distortion (THD) [1–4]. However, most of these linearisation techniques may present important drawbacks such as reduced effective transconductance and significant power consumption. On the other hand, low power supply and power consumption solut...

A low-power spur-free precision amplifier, which uses input chopping and correlated double sampling for demodulation, is presented. This circuit employs an AC coupling between the first and the second stage that removes the first stage offset without causing ripple. The input rail-to-rail circuit, fabricated in a mixed 0.18–0.5 m CMOS technology, operates with supply ranging from 1.8 V to 5 V. ...

In recent years, there has been an increasing demand for high-speed digital circuits at low power consumption. This paper presents a design of input stage of Operational Amplifier i.e cascode differential amplifier using a standard 65nm CMOS Technology.A comparison betweem gate-driven, bulk-driven and cascode bulk driven bulk-driven differential amplifier is described. The Results demonstrate t...

A 1 V rail-to-rail constant-gm CMOS operational amplifier is proposed. This study shows that keeping the sum of currents in the complementary differential pairs constant rather than controlling the tail currents produces a constant-gm input stage operating in the weak inversion. The currents in the n-channel differential pair are regulated to keep the sum of currents in the complementary differ...