Carrillo, Juan M.Domínguez, Miguel Á.Pérez Aloe, RaquelDuque Carrillo, J. FranciscoCruz Blas, Carlos Aristóteles de la2020-07-022021-01-232020J. M. Carrillo, M. A. Domínguez, R. Pérez-Aloe, J. F. Duque-Carrillo and C. A. de la Cruz, 'CMOS Low-Voltage Indirect Current Feedback Instrumentation Amplifiers With Improved Performance,' 2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Genoa, Italy, 2019, pp. 262-265, doi: 10.1109/ICECS46596.2019.8964811.978-1-7281-0996-110.1109/ICECS46596.2019.8964811https://academica-e.unavarra.es/handle/2454/37292Indirect current feedback (ICF) is a very common operation principle used in the design of CMOS instrumentation amplifiers (IA). The input and output transconductors required in an ICF IA usually consist on resistive-degenerated simple differential pairs. In this contribution conventional source-follower (SF) structures used in IA transconductors are replaced by flippedvoltage-follower (FVF) and super-source-follower (SSF) cells, respectively. As a result, the overall performance and efficiency of the IA is enhanced with a minimum cost. The principle of operation governing CMRR is also analyzed and its behavior is confirmed by means of extensive simulations. A single-stage IA with a fixed voltage gain equal to 10 V/V has been designed in 0.35-μm standard CMOS technology to operate with 1.8 V supply. Simulation results show improved metrics in terms of voltage gain accuracy, while the overall performance of the IA is comparable to other contributions in the literature.4 p.application/pdfeng© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Instrumentation amplifiersIndirect current feedbackEnhanced voltage followerSource degenerationResistive sensorinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess