A Start-up Assisted Fully Differential Folded Cascode Opamp

Low Power Fully Differential Folded Cascode OTA with CMFB Circuit

This paper presents the designing of a fully differential folded cascode operational transconductance amplifier (OTA) with common mode feedback circuit (CMFB). The designed OTA is operated in sub-threshold region to reduce the power consumption. The simulation is carried out in CADENCE environment using 150nm CMOS. The simulation result shows the DC gain of 82 dB with UGBW of 768 KHz, CMRR of 1...

CMOS Fully Differential Feedforward-Regulated Folded Cascode Amplifier

A fully differential self-biased inverter-based folded cascode amplifier which uses the feedforward-regulated cascode principle is presented. A detailed small-signal analysis covering both the differential-mode and the common-mode paths of the amplifier is provided. Based on these theoretical results a design is given and transistor level simulations validate the theoretical study and also demo...

A Self-Biased High Performance Folded Cascode CMOS Op-Amp

Cascode CMOS op-amps use a large number of external bias voltages. This results in numerous drawbacks, namely, an area and power overhead, susceptiblity of the bias lines to noise and cross-talk and high sensitivity of the bias point to process variations. In this paper we present a self-biasing technique for folded cascode CMOS op-amps that uses no additional devices and no baas voltages other...

A Current Steering Positive Feedback Improved Recycling Folded Cascode OTA

In the literature, Improved Recycling Folded Cascode (IRFC) Operational Transconductance Amplifier (OTA) is proposed for enhancing the DC gain and the Unity Gain Bandwidth (UGB) of the Recycling Folded Cascode (RFC) OTA. In this paper, an enhanced IRFC (EIRFC) OTA which uses positive feedback at the cascode node is proposed for enhancing the differential mode (DM) gain without changing the unit...

Fuding Ge: Folded-cascode Class-AB Operational Amplifier