A 12.5 Gb/s 1.38 mW all-inverter-based optical receiver with multi-stage feedback TIA and continuous-time linear equalizer

Yan, Peng; Hong, Chaerin; Chang, Po-Hsuan; Kang, Hyungryul; Annabattuni, Dedeepya; Kumar, Ankur; Fan, Yang-Hang; Liu, Ruida; Rady, Ramy; Palermo, Samuel

doi:10.1007/s10470-024-02248-1

Analog Integr Circ Sig Process

2024

DOI: 10.1007/s10470-024-02248-1

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A 12.5 Gb/s 1.38 mW all-inverter-based optical receiver with multi-stage feedback TIA and continuous-time linear equalizer

Peng Yan,

Chaerin Hong,

Po-Hsuan Chang

et al.

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A CMOS Inverter-Based Active Feedback Transimpedance Amplifier

Park,

Lee,

Seo

et al. 2024

Photonics

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This paper presents an inverter-based active feedback transimpedance amplifier (IAF-TIA), in which an active feedback is applied to a voltage-mode inverter-based TIA, and therefore, the controlled positive regeneration process enables the proposed IAF-TIA to achieve the limiting operations for input currents greater than 100 μApp. However, the active inverter feedback mechanism might be prone to instability, hence mandating a very careful optimization of the loop gain. For this purpose, a diode-connected NMOS transistor is employed as a switch in the feedback path with its gate connected to the input, which helps not only to mitigate the corresponding issue but also to accommodate large input currents up to 1.5 mApp. The proposed IAF-TIA implemented in a standard 180 nm CMOS process demonstrates a 70.5 dBΩ transimpedance gain, 1.21 GHz bandwidth, 4.3 noise current spectral density, 63.5 dB input dynamic range, and 23.6 mW power dissipation from a single 1.8 V supply. The chip core occupies an area of 180 × 50 μm2, including an on-chip P+/N-well/Deep N-well avalanche photodiode as an optical detector.

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A CMOS Inverter-Based Active Feedback Transimpedance Amplifier

Park,

Lee,

Seo

et al. 2024

Photonics

View full text Add to dashboard Cite

show abstract

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A 12.5 Gb/s 1.38 mW all-inverter-based optical receiver with multi-stage feedback TIA and continuous-time linear equalizer

Cited by 1 publication

References 14 publications

A CMOS Inverter-Based Active Feedback Transimpedance Amplifier

A CMOS Inverter-Based Active Feedback Transimpedance Amplifier

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