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 ...

This paper propounds a new high step-up DC-DC topology based on the active switched-inductor (A-SL) technique, which utilizes coupled inductor (CI) for performance enhancement. Among features of presented are following: (a) Better voltage gain (VG) and efficiency, (b) Since there low voltages across power switches, it is possible to reduce amount that lost as result using MOSFETs with rating re...

Two different circuit models of RC coupled small-signal amplifiers are developed using identical power MOSFETs in Darlington pair configuration. Proposed circuits successfully eliminate the poor frequency response problem of Darlington pair amplifiers at higher frequencies. An additional biasing resistance RA, ranging from 1KΩ to 100KΩ, is to be essentially used in the proposed circuits to main...

This paper proposes a low voltage (±0.55V supply voltage) low power (44.65μW) high common mode rejection ratio (CMRR) differential amplifier (d.a.) with rail to rail input common mode range (ICMR), constant transconductance (gm) and enhanced frequency performance. Its high performance is obtained using a simple negative averaging method so that it cancels out the common mode input signals at th...

A substrate isolated LDO for an inductively powered retinal implant to generate a negative substrate voltage of −2V out of a more negative rectified voltage down to −7V is presented. Due to the fact that the negative rectified input voltage is negative relative to substrate, the LDO has to be completely isolated against substrate. The LDO has an Open Loop Gain of 66dB and a PSRR of −81dB at low...

This paper presents the development of a high gain Boost converter applied to photovoltaic (PV) system. The converter was designed to be connected directly to the photovoltaic panel and perform the search for the maximum power point (MPPT). The new proposal seeks the MPPT is to connect each panel a converter for a high gain greater accuracy in finding the point of maximum power. The converter w...

A new high performance second-generation CMOS current conveyor architecture is presented. It is built using a differential flipped voltage follower as its input buffer stage and a cascode current mirror as output stage. It is characterized by very low output impedance. It provides gain independent high bandwidth when used to implement a programmable gain voltage amplifier. Simulation and experi...