Abstract
A current op amp with a differential output and a single-ended input can be configured from a single second generation current conveyor and an output stage with a differential floating current source. Owing to a very simple basic configuration with a single dominant pole, this design combines a high bandwidth with a high open loop gain. In this paper we present the basic configuration, derive the fundamental equations for the performance of the op amp, and describe some design considerations with respect to an optimization of the op amp for a high bandwidth. Simulation results are given from a commercially available 2µm CMOS process resulting in an open loop differential gain of 94dB and a gain-bandwidth product of 128M H z at a supply voltage of 3V and a supply current of 25µA. The design has been experimentally verified through a test circuit and experimental results from this confirm the expected behaviour.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
