Being a core component of an analog-to-digital converter (ADC), the operational amplifier is expected to provide sufficient DC gain and bandwidth to make the output amplitude less than 1⁄2 Least Significant Bit (LSB) in a half clock cycle. However, due to the limitation of the operational amplifiers in DC gain and bandwidth, most ADC is limited to 10-Bit, 100 Million Samples per Second (MSPS) [...

A number of current feedback operational amplifier topologies suitable for operation in a low-voltage environment are introduced in this paper. Their realization is based on the corresponding low-voltage second generation current conveyor topologies. Important performance factors such as accuracy, bandwidth, and linearity have been considered, and the obtained simulation results have been compa...

In this paper we present a three-stage fully differential operational amplifier in 120nm digital CMOS. To reach high gain gain-boosted cascodes in the first stage are used. The gain-boost amplifiers are realized as two-stage amplifiers with self cascodes. A DC gain of 108dB and an unity-gain frequency of 1.06GHz are achieved at 1.2V supply. The operational amplifier is appropriate for supply vo...

A design strategy for minimizing a feedback amplifier’s step-response settling time is introduced. Central to this approach is the clear identification of the independent design parameters characterizing the amplifier and the introduction of a figure of merit for assessing the settling performance of an amplifier that is independent of power, supply voltage and capacitive loading. With this app...

In this research paper, Simulation and Analysis of innovative folded cascode Operational Amplifier based on carbon nanotubes (CNT) has been performed using 45 nm technology. DC voltage gain, average power, bandwidth and output resistance have been computed. CNT based folded cascode Op Amp results in high performance with the increase of CNTs. For example, the increase in DC gain is 41.48% in pC...

[ /Title (AN60 77) /Subject (An IC Operational Transc onductance Amplifier (OTA) With Power Capability) /Autho r () /Keywords (Intersil Corporation, power switch, power amplifier, programmable power switch) /Creator () OBSOLE NO RECOMMEN Call Central Appli or email: cen An IC Operational Transconductance Amplifier (OTA) With Power Capability TE PRODUCT PLACEMENT AN6077.3 Application Note Octobe...

High-resolution electronic interface circuits for transducers with nonlinear capacitive impedance need an operational amplifier, which is stable for a wide range of load capacitance. Such operational amplifier in a conventional design requires a large area for compensation capacitors, increasing costs and limiting applications. In order to address this problem, we present a gain-boosted two-sta...

i ii ACKNOWLEDGEMENT I wish to express my sincere appreciation to my thesis advisor, Mr. B. K. Hemant for his timely, informative feedback and support during this effort. It has been a great pleasure to learn from him during the process of expanding and refining my research. He has been a generous mentor. I also like to express my gratefulness to Dr. his perpetual encouragement, generous help a...

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