A Novel Design for a Current Feedback Amplifier
نویسندگان
چکیده
Current Feedback Amplifiers (CFA) are discussed in this report. Current Feedback Amplifiers employ the current mode of signal processing to achieve higher gain-bandwidth product and greater slew rates than those of a Voltage Feedback Amplifier (VFA). The Current Feedback Amplifier topology has an inherent advantage over that of the the Voltage Feedback Amplifier, wherein the amplifier gain can be varied independently without affecting the operational bandwidth within a certain range. Hence, Current Feedback Amplifiers fulfill the need for high speed, wide bandwidth amplifiers in modern day circuits. Various stages of Current Feedback Amplifier architecture are discussed in detail in the report. Index Terms – Current Feedback Amplifier, Current Conveyor, Unity Gain Buffer.
منابع مشابه
A Novel Resistive Capacitive Feedback Trans-impedance Amplifier Optimization Using IPSO Algorithm
A novel low noise trans-impedance amplifier is proposed using low cost 0.18 µm CMOS technology. A resistive-capacitive feedback is used to extend the bandwidth of the amplifier. As the structure is inductor less, it is suitable for low cost integrated optical interconnects. In this paper Improved Particle Swarm Optimization have applied to determine optimal trans-resistance and noise of propose...
متن کاملA Novel Active Feedback Frequency Compensation Scheme for Two-Stage OTA
A novel active feedback frequency compensation scheme is presented in this work. Based on the proposed technique, an amplifier with two main poles in its frequency bandwidth can be easily compensated by introducing a pole-zero pair in a local feedback. The proposed method is mathematically analyzed and then based on the derived formulations, a design procedure is established. The capability of ...
متن کاملAn Ultra High CMRR Low Voltage Low Power Fully Differential Current Operational Amplifier (COA)
this paper presents a novel fully differential (FD) ultra high common mode rejection ratio (CMRR) current operational amplifier (COA) with very low input impedance. Its FD structure that attenuates common mode signals over all stages grants ultra high CMRR and power supply rejection ratio (PSRR) that makes it suitable for mixed mode and accurate applications. Its performance is verified by HSPI...
متن کاملA Low-Voltage, Low-Power, Two-Stage Amplifier for Switched-Capacitor Applications in 90 nm CMOS Process
Abstract- A novel low-voltage two-stage operational amplifier employing resistive biasing is presented. This amplifier implements neutralization and correction common mode stability in second stage while employs capacitive dc level shifter and coupling between two stages. The structure reduces the power consumption and increases output voltage swing. The compensation is performed by simple mill...
متن کاملAnalysis and design of a CMOS current reused cascaded distributed amplifier with optimum noise performance
In this paper, analysis, simulation and design of a distributed amplifier (DA) with 0.13µm CMOS technology in the frequency range of 3-40 GHz is presented. Gain cell is a current reused circuit which is optimum in gain, noise figure, bandwidth and also power dissipation. To improve the noise performance in the frequency range of interest, a T-matching low pass filter LC network which is utilize...
متن کامل