Inductorless Broadband Transimpedance Amplifier for 25-Gb/s NRZ and 50-Gb/s PAM-4 Operations in a 90-nm CMOS Technology

In this study, an inductorless broadband transimpedance amplifier (TIA) is implemented using TSMC 90-nm complementary metal-oxide-semiconductor (CMOS) technology. A regulated cascode circuit with low input impedance is used as the input stage of the TIA. The core amplifier is a fully differential am...

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Published inJournal of semiconductor technology and science Vol. 21; no. 5; pp. 304 - 310
Main Authors Jou, Jau-Ji, Shih, Tien-Tsorng, Peng, Chih-Chen, Hsu, Hao-Wen, Ye, Xuan-Yi
Format Journal Article
LanguageEnglish
Published 대한전자공학회 01.10.2021
Subjects
Online AccessGet full text
ISSN1598-1657
2233-4866
DOI10.5573/JSTS.2021.21.5.304

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Abstract In this study, an inductorless broadband transimpedance amplifier (TIA) is implemented using TSMC 90-nm complementary metal-oxide-semiconductor (CMOS) technology. A regulated cascode circuit with low input impedance is used as the input stage of the TIA. The core amplifier is a fully differential amplifier with active feedback. The output stage of the TIA is an equalizer based on a differential amplifier with a source degenerated resistor and capacitor. The TIA has a bandwidth of 24.8 GHz and good linearity. In the TIA chip testing, clear 25-Gb/s nonreturn to zero and 50-Gb/s four-level pulse amplitude modulation eye diagrams can be observed. KCI Citation Count: 0
AbstractList In this study, an inductorless broadband transimpedance amplifier (TIA) is implemented using TSMC 90-nm complementary metal-oxide-semiconductor (CMOS) technology. A regulated cascode circuit with low input impedance is used as the input stage of the TIA. The core amplifier is a fully differential amplifier with active feedback. The output stage of the TIA is an equalizer based on a differential amplifier with a source degenerated resistor and capacitor. The TIA has a bandwidth of 24.8 GHz and good linearity. In the TIA chip testing, clear 25-Gb/s nonreturn to zero and 50-Gb/s four-level pulse amplitude modulation eye diagrams can be observed. KCI Citation Count: 0
Author Tien-Tsorng Shih
Chih-Chen Peng
Xuan-Yi Ye
Jau-Ji Jou
Hao-Wen Hsu
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Keywords Transimpedance amplifier (TIA)
four-level pulse amplitude modulation (PAM-4)
complementary metal-oxide-semiconductor (CMOS)
optical receiver
high-speed transmission
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Title Inductorless Broadband Transimpedance Amplifier for 25-Gb/s NRZ and 50-Gb/s PAM-4 Operations in a 90-nm CMOS Technology
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