Journal ArticleDOI
A Compensation Technique for Two-Stage Differential OTAs
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TLDR
A frequency compensation method for operational transconductance amplifiers is proposed, which poses no power overhead compared to Miller compensation, while improving the 3-dB bandwidth, the unity gain frequency, and the slew rate.Abstract:
In this brief, a frequency compensation method for operational transconductance amplifiers is proposed, which poses no power overhead compared to Miller compensation, while improving the 3-dB bandwidth, the unity gain frequency, and the slew rate. The technique employees positive feedback to introduce an extra left half plane zero to cancel a pole. The phase margin shows good robustness against process and temperature variations. The proposed technique poses no design constraints on the transconductance or capacitor values, which makes it attractive for low-power applications with low area overhead.read more
Citations
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Journal ArticleDOI
A low-power 2nd-order CT delta---sigma modulator with an asynchronous SAR quantizer
TL;DR: In this article, a low voltage continuous-time delta-sigma modulator (DSM) is proposed for the receiver of an ultra-low-power radio, which uses a 2nd-order loop filter implemented with a single operational amplifier to reduce the power consumption.
Journal ArticleDOI
CMOS Integrated Remote Antenna Unit for Fiber-Fed Distributed MIMO Systems
TL;DR: In this article, a fully integrated remote antenna unit (RAU) intended for fiber-fed distributed multiple-input multiple-output (MIMO) systems is presented. But the RAU is designed for narrowband (60 MHz) time-division duplex systems, where an IF over fiber approach is chosen to facilitate the use of low-cost optical components and integrated photodetectors.
Proceedings ArticleDOI
A cellular receiver front-end with blocker sensing
TL;DR: In this paper, a receiver front-end supporting contiguous and non-contiguous intra-band carrier aggregation scenarios with a fully integrated spectrum sensor that can detect both in-gap and out-of-band blockers has been implemented in 65nm CMOS technology.
Journal ArticleDOI
Analysis and design of a two-stage amplifier with enhanced performance
TL;DR: Simulation results confirm convenient performance of the circuit at all process corners, in the presence of a mismatch, power supply noise and input common mode variations.
Proceedings ArticleDOI
Investigating the Developments on the Frequency Compensation Techniques of the Two-Stage OTAs - A Brief Guide and Updated Review -
TL;DR: In this work, the developments of the major FCTs of the two-stage OTAs are investigated and can be used as a guide for the design engineers as well as the universities teaching graduate level advanced electronics and OTAs/Op-amps courses.
References
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Book
Analysis and Design of Analog Integrated Circuits
Paul R. Gray,Robert G. Meyer +1 more
TL;DR: In this article, the authors combine bipolar, CMOS and BiCMOS analog integrated circuits into a unified treatment that stresses their commonalities and highlights their differences, and provide valuable insights into the relative strengths and weaknesses of these important technologies.
Journal ArticleDOI
The Recycling Folded Cascode: A General Enhancement of the Folded Cascode Amplifier
R. Assaad,Jose Silva-Martinez +1 more
TL;DR: A recycling amplifier architecture based on the folded cascode transconductance amplifier is described, which delivers an appreciably enhanced performance over that of the conventional folded by using previously idle devices in the signal path, which results in an enhanced transc conductance, gain, and slew rate.
Journal ArticleDOI
A robust feedforward compensation scheme for multistage operational transconductance amplifiers with no Miller capacitors
B.K. Thandri,Jose Silva-Martinez +1 more
TL;DR: In this article, a multistage operational transconductance amplifier with a feedforward compensation scheme which does not use Miller capacitors is introduced, which uses the positive phase shift of left-halfplane (LHP) zeros caused by the feedforward path to cancel the negative phase shifting of poles to achieve a good phase margin.
Journal ArticleDOI
Three-stage large capacitive load amplifier with damping-factor-control frequency compensation
TL;DR: In this article, a damping factor control frequency compensation (DFCFC) technique was proposed to improve frequency response, transient response, and power supply rejection for amplifiers, especially when driving large capacitive loads.
Journal ArticleDOI
Single Miller capacitor frequency compensation technique for low-power multistage amplifiers
TL;DR: In this article, a low-power efficient three-stage amplifier topology suitable for large capacitive load applications is introduced, which uses a single Miller capacitor compensation (SMC) and single Miller capac feedforward compensation (SMFFC).