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Ramon G. Carvajal

Researcher at University of Seville

Publications -  289
Citations -  5206

Ramon G. Carvajal is an academic researcher from University of Seville. The author has contributed to research in topics: CMOS & Operational amplifier. The author has an hindex of 32, co-authored 287 publications receiving 4721 citations. Previous affiliations of Ramon G. Carvajal include Epson & New Mexico State University.

Papers
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Journal ArticleDOI

Highly linear micropower class AB current mirrors using Quasi-Floating Gate transistors

TL;DR: Two class AB current mirror topologies are proposed, with slightly different ways to achieve class AB operation and dynamic biasing, which allow high linearity for large signal currents and accurately set quiescent currents without requiring extra power consumption or supply voltage requirements.
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Class AB CMOS analogue squarer circuit

TL;DR: In this paper, a pseudo-differential pair insensitive to input common-mode variations leads to class AB operation, hence yielding dynamic currents not bounded by quiescent currents, and measurement results for a 0.5µm CMOS prototype are provided that verify the correct operation of the circuit.
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Very low-voltage class AB CMOS and bipolar precision current rectifiers

TL;DR: In this article, simple class-AB CMOS and bipolar precision rectifier circuits that operate from a single supply close to a transistor's threshold voltage are introduced, which have output voltage swings comparable to the supply voltage.
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Super class AB RFC OTA with adaptive local common-mode feedback

TL;DR: A super class AB recycling folded cascode operational transconductance amplifier employs local common-mode feedback using two matched tuneable active resistors, allowing to adapt the amplifier to different process variations and loads.
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Pseudo-Three-Stage Miller Op-Amp With Enhanced Small-Signal and Large-Signal Performance

TL;DR: A simple technique to implement highly power efficient class AB–AB Miller op-amps using a composite input stage with resistive local common mode feedback that essentially enhances the op-amp’s effective transconductance gain, the dc open-loopgain, the gain-bandwidth product, and slew rate with just moderate increase in power dissipation.