continuous-time linear equalizer (CTLE)

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A 4 × 50 Gb/s 2.9-pJ/b NRZ VCSEL-Based Co-Packaged Optical Link With Fiber Termination

A 4 × 50 Gb/s 2.9-pJ/b NRZ VCSEL-Based Co-Packaged Optical Link With Fiber Termination 150 150
Author(s): Sashank Krishnamurthy, Susnata Mondal, Junyi Qiu, Joseph Kennedy, Soumya Bose, Tolga Acikalin, Shuhei Yamada, James Jaussi, Mozhgan Mansuri

Abstract:

A four-channel vertical cavity surface-emitting laser (VCSEL)-based co-packaged optical (CPO) transceiver (TRX) is demonstrated, integrating a photodiode (PD) array, a trans-impedance amplifier front-end integrated circuit (TIA-FE IC), an electrical receiver (RX) IC, and optical fiber termination on a single package on the receive side. The transmitter (TX) counterpart incorporates …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 16
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3600662
Publisher: IEEE

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A 0.32-pJ/b 100-Gb/s PAM-4 TIA in 28-nm CMOS

A 0.32-pJ/b 100-Gb/s PAM-4 TIA in 28-nm CMOS 150 150
Author(s): Chongyun Zhang, Li Wang, Fuzhan Chen, C. Patrick Yue

Abstract:

This letter presents a 0.32 pJ/bit 100-Gb/s PAM-4 CMOS transimpedance amplifier (TIA). Several techniques are proposed to alleviate TIA design tradeoffs while pushing energy efficiency to a limit. A multipeaking input network is designed to relieve the bandwidth (BW) degradation from parasitics of input interface and ESD diodes. An …

Published in: IEEE Solid-State Circuits Letters
Page(s): 273 – 276
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3603569
Publisher: IEEE

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