Transimpedance amplifier with a compression stage for wide dynamic range optical applications

Atef, Mohamed

doi:10.1016/j.mejo.2015.04.004

Cited by 10 publications

(4 citation statements)

References 7 publications

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“…However, to maintain the lower input impedance, maximizing the transconductance is quite essential while maintaining device width more or applying a greater direct current (DC). Moreover, both result in the performance degradation in terms of limited bandwidth, voltage overhead and increased power consumption (Atef, 2015; Park and Yoo, 2004; Bashiri et al , 2010). Hence, the transconductance based regulated common gate (RCG)-based TIAs are designed to handle the common gate issues.…”

Section: Related Workmentioning

confidence: 99%

Forty five nm CMOS low power multilevel active feedback transimpedance amplifier for optical receivers

Singh

Niranjan

Kumar

2021

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Purpose Recent advancements in the domain of smart communication systems and technologies have led to the augmented developments for very large scale integrated circuit designs in electro-magnetic applications. Increasing demands for low power, compact area and superior figure of merit–oriented circuit designs are the trends of the recent research studies. Hence, to accomplish such applications intended for optical communications, the transimpedance amplifier (TIA) was designed. Design/methodology/approach In this research work, the authors present a multi-layer active feedback structure which mainly composes a transimpedance stage and a gain stage followed by a low pass filter. This structure enables to achieve improved input impedance and superior gain. A simplified cascaded amplifier has also been designed in a hierarchical topology to improvise the noise effect further. The proposed TIA has been designed using Taiwan Semiconductor Manufacturing Company 45 nm complementary metal oxide semiconductor technology. Moreover, the thermal noise has been analyzed at −3 dB bandwidth to prove the reduction in thermal noise with increase in frequency for most of the devices used in the designed circuit. Findings The proposed differential TIA circuit was found to obtain the transimpedance gain of 50.1 dBO without applying any external bias current which is almost 8% improvised as compared to the conventional circuit. In addition to this, bandwidth achieved was 2.15 GHz along with only 38 W of power consumption, which is reasonably 100 times improvised in comparison of conventional circuit. Hence, the proposed differential TIA is suitable for the low power optical communications applications intended to work on low supply voltage. Originality/value The designed work is done by authors in university lab premises and is not copied from anywhere. To the best of the authors’ knowledge, it is 100% original.

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Section: Related Workmentioning

confidence: 99%

Forty five nm CMOS low power multilevel active feedback transimpedance amplifier for optical receivers

Singh

Niranjan

Kumar

2021

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“…Additionally, various studies have presented inverter structures as TIAs. 8,10,[13][14][15][16][17] Zohoori and Dolatshahi 8 use a cascoded inverter that broadens the frequency bandwidth. This is desirable for high data rates.…”

Section: Introductionmentioning

confidence: 99%

An improved low‐input resistance folded‐cascode transimpedance amplifier for giga‐bit per second optical communication front‐ends

Zohoori,

Hosseini,

Dehkordi

et al. 2023

Circuit Theory & Apps

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SummaryThe present study is devoted to articulating a modified folded‐cascode circuit, to make folded‐cascode structures an attractive configuration as a transimpedance amplifier (TIA) for being employed in Giga‐bit per second optical communication receiver systems. Giga‐bps communication receivers are highly necessitating circuits to isolate the input parasitic capacitance of the photodiode. The present modification makes folded cascodes comparable to the famous regulated cascode (RGC) structures by isolating this parasitic capacitor almost by the same quantity. The system is shown to be capable of operating at 2.5 Gbps up to 8 Gbps data rate with a fixed bandwidth. The paper analyzes and evaluates the designed circuit mathematically, and the obtained simulated results from Cadence using TSMC 65 nm CMOS validate the suitability of the modified circuit as a TIA.

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“…Employing series inductive peaking results in an extended bandwidth, while occupies large area on chip. Moreover, in [17], an inverter with a diode connected NMOS and a cascoded PMOS load is proposed. This structure benefits from a wide dynamic range, whose bandwidth is limited to only 227MHz.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Stage TIA based on Cascoded-Inverter Structures for Low-power Applications

Honarmand

Pourahmadi

Shayesteh

et al. 2021

JICS

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This article discusses a multi-stage transimpedance amplifier (TIA), which is based on three stages of a modified inverter structure. The traditional inverter structures’ performances are improved adding two cascoded transistors. This new structure benefits from elimination of the Miller-capacitances in comparison with the traditional inverters, which can provide higher speed and wider frequency bandwidth. Manipulating the trade-offs among bandwidth, gain and power consumption beside using Gm/ID technique, this paper introduces a low-power transimpedance amplifier for high-bit rates in optical communication receiver systems. Moreover, active types of inductors are also used to lesson the occupied area and increase the frequency bandwidth. Transferring poles of the improved circuit to higher frequencies means less required DC current for a fixed bandwidth range, which results in low-power characteristic.

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Transimpedance amplifier with a compression stage for wide dynamic range optical applications

Cited by 10 publications

References 7 publications

Forty five nm CMOS low power multilevel active feedback transimpedance amplifier for optical receivers

Forty five nm CMOS low power multilevel active feedback transimpedance amplifier for optical receivers

An improved low‐input resistance folded‐cascode transimpedance amplifier for giga‐bit per second optical communication front‐ends

A Multi-Stage TIA based on Cascoded-Inverter Structures for Low-power Applications

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