Benefits of Using VCO-OTAs to Construct TIAs in Wideband Current-Mode Receivers Over Inverter-Based OTAs

Kalani, Sarthak; Haque, Tanbir; Gupta, Rupal; Kinget, Peter R.

doi:10.1109/tcsi.2018.2883711

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…In addition, a new architecture for wideband receivers was suggested in this decade based on the LNTA [252,276,287,297,335,339,347,354] that drove a current-mode passive mixer loaded by a low-input-impedance transimpedance amplifier (TIA). TIA and LNTA are not the objects of this article albeit the LNTA architecture is a kind of 'g m -boosted LNA' with noise reduction and without 'LO feed through to antenna' problem [252,276,287,339].…”

Section: In the 2010smentioning

confidence: 99%

Ultrawideband LNA 1960–2019: Review

Shahrabadi

2021

IET Circuits, Devices & Syst

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To the best of the author's knowledge, several studies during 1960-2019 were carried out on wideband and ultrawideband LNAs just to render optimum LNAs for SAW-less Radio-Frequency Integrated Circuits (RFICs) but none of these works reviewed and taught the proceedings of these six decades, hence the lack of a comprehensive review is quite noticeable. This article specifically studies the challenges and solutions of designing UWB LNA by reviewing topologies and techniques such as inductive peaking, noise and distortion cancellation, g m -boosting, active inductor and notch filter. Its historical aspect illustrates when the idea of wideband LNA was born and how it changed to ultrawideband LNA, and its tutorial aspect discusses circuits and achievements to present optimum LNAs in Complementary MOS (CMOS), BiCMOS and High-Electron-Mobility Transistor (HEMT) technologies. This work describes the endeavours of engineers in reaching UWB LNA from narrowband LNA during six decades that have great importance as a chapter in understanding this topic because it teaches all topologies, techniques, circuits and related events in a historical narrative for trained readers who are not experts on this topic. | UWB LNA | In the 1960sWhere did the idea of 'transistorised wideband LNA' originate from? It seems that everything goes back to the 1960s when This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: In the 2010smentioning

confidence: 99%

Ultrawideband LNA 1960–2019: Review

Shahrabadi

2021

IET Circuits, Devices & Syst

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“…The extremely low supply voltage does not allow for the exploitation of traditional design approaches such as tailed differential pairs and cascoding, and several design techniques have been studied for the design of efficient ULV OTAs. Solution based on a fully-digital approach (DIGOTA) [22][23][24] or operating in the time domain [25,26] have been proposed, but most of these techniques exploit analog approaches such as body-driving [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45], floating-gate [46] and floating-body [47] devices, and inverter-based architectures [48][49][50][51]. The latter are often suitable for implementation using digital standard-cell libraries [52][53][54][55], thus simplifying the layout through the use of automatic place-and-route CAD tools and easing design portability among different technologies.…”

Section: Introductionmentioning

confidence: 99%

A 0.3 V OTA with Enhanced CMRR and High Robustness to PVT Variations

Della Sala,

Centurelli,

Scotti

et al. 2024

JLPEA

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In this paper, we present a 0.3 V body-driven operational transconductance amplifier (OTA) that exploits a biasing approach based on the use of a replica loop with gain. An auxiliary amplifier is exploited both in the current mirror load of the first stage of the OTA and in the replica loop in order to achieve super-diode behavior, resulting in low mirror gain error, which enhances CMRR, and robust biasing. Common-mode feedforward, provided by the replica loop, further enhances CMRR. Simulations in a 180 nm CMOS technology show 65 dB gain with 2 kHz unity-gain frequency on a 200 pF load when consuming 9 nW. Very high linearity with a 0.24% THD at 90% full-scale and robustness to PVT variations are also achieved.

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“…Another approach is to radically rethink analog functions in digital terms [6,7], using only digital circuits, such as a class D amplifier [8]. VCO-based amplifiers [9][10][11], voltage-to-time converters [12,13], charge amplifiers [14], analog-to-digital [15][16][17][18][19] and digital-to-analog converters [20], digital voltage references [21], low-dropout regulators (LDO) [22], hybrid analog-digital amplifiers [23] and digital-based amplifiers [24][25][26][27][28][29][30][31][32] have been reported in the literature. In [24][25][26][27][28][29][30][31][32], a differential amplifier, composed of only logic gates, was proposed.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of the Operating Principles and Power Consumption of Digital-Based Analog Amplifiers

Richelli,

Faustini,

Rosa

et al. 2023

JLPEA

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Digital-based differential amplifiers (DDA) are particularly suitable to low voltage digital integrated circuit technologies. This paper presents an exhaustive analysis of digital-based analog amplifiers to take advantage of today’s high-performance digital technologies, and of computer aided design (CAD), which is commonly employed to design integrated circuits. The operating principle and the main mathematical relations of digital-based differential amplifiers are discussed along with an exhaustive explanation of its operating regions and of the corresponding power consumption. These aspects, which are not discussed in the literature, are very important for the circuit designers. Finally, a detailed description of the design procedure of the UMC 180nm standard CMOS technology is provided.

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Benefits of Using VCO-OTAs to Construct TIAs in Wideband Current-Mode Receivers Over Inverter-Based OTAs

Cited by 11 publications

References 14 publications

Ultrawideband LNA 1960–2019: Review

Ultrawideband LNA 1960–2019: Review

A 0.3 V OTA with Enhanced CMRR and High Robustness to PVT Variations

An Investigation of the Operating Principles and Power Consumption of Digital-Based Analog Amplifiers

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