What question did this study set out to answer?

The aim is to develop a low-power transimpedance amplifier for high-speed optical communications.

April 8, 2026Open Access

A Bulk-Driven Low-Power CMOS Transimpedance Amplifier for 5 Gb/s Intra-Computer Optical Communications

Key Points

The aim is to develop a low-power transimpedance amplifier for high-speed optical communications.
Implemented in 65-nm CMOS technology.
Utilized a bulk-driven technique for enhanced gain.
Designed a two-stage inverter-based amplifier with series feedback.
Incorporated tail-current capacitance for bandwidth extension.
Achieved a bandwidth of 3.76 GHz.
Measured power consumption of 0.81 mW.
Demonstrated an 82% power reduction compared to conventional TIAs.

Abstract

This paper presents a bulk-driven low-power transimpedance amplifier (TIA) for 5 Gb/s intra-computer optical communications, implemented in 65-nm CMOS technology. The design utilizes a bulk-driven technique with shorted gate and bulk terminals to enhance the gain, along with a two-stage inverter-based amplifier with series feedback and tail-current capacitance for bandwidth extension. Measurement results demonstrate a 3.76 GHz bandwidth with 0.81 mW power consumption, achieving an 82% power reduction compared to conventional low-power TIAs.

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Cite This Study

MIZUTANI et al. (Thu,) studied this question.

synapsesocial.com/papers/69d5efd374eaea4b11a7967c https://doi.org/https://doi.org/10.1587/elex.23.20260094

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