2006•Unpublished venueRequires access

New 1.5-V CMOS Current Feedback Operational Amplifier

Ahmed H. Madian, Soliman A. Mahmoud, Ahmed M. Soliman

Abstract

A novel CMOS low-voltage current feedback operational amplifier (CFOA) is presented. The proposed CFOA based on a new positive second-generation current conveyor (CCII+). The new circuit allows almost a rail-to-rail input and output operation; also, it reduces the offset voltage and provides high driving current capabilities. The CFOA is operating at supply voltages of ±0.75 V with a total standby current of 338 μA. The circuit exhibits better than 10 MHz bandwidth and ±1mA current drive capability. PSpice simulation results are given using 0.35μm technology for the proposed CFOA.

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Key concepts: Current-feedback operational amplifier, Operational amplifier, Input offset voltage, Current conveyor, Op amp integrator, CMOS, Electrical engineering, Current (fluid)