A 28-Gb/s PAM-4 Fully-Integrated Optical Receiver with High-Speed Silicon Photodetector in 28-nm CMOS

Dongshen Zhan; Liping Zhong; Wentao Zhou; Zhenyu Yao; Xiongshi Luo; Yangyi Zhang; Hemiao Wang; De Zhou; Quan Pan

10.1109/ICTA60488.2023.10364296

2023

2831-395X

979-8-3503-4429-5

2023 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA)

192-193

27-29 Oct. 2023

Hefei, China

This paper presents a 28-Gb/s PAM4 fully-integrated optical receiver for short-range optical communication in 28-nm CMOS. This receiver incorporates an on-chip silicon photodetector, a peaking-scalable trans-impedance amplifier (TIA) with the single-to-differential current buffer, a two-stage variable gain amplifier, a continuous-time linear equalizer, and an output buffer. A silicon P-Well/N-Well on-chip photodetector in the standard CMOS process with less junction capacitance is employed to realize a bandwidth of 4.53 GHz. The proposed TIA realizes a 0.9-dB high-frequency pseudo-difference mismatch with low power. Moreover, the peaking-scalable operation of TIA is implemented by an adjustable high-pass filter. This receiver achieves a $\mathbf{71}-\mathbf{dB}\mathbf{\Omega}$ trans-impedance gain and a 28-Gb/s PAM-4 eye diagram with the energy efficiency of 0.41-pJ/bit under 1.0-V supply.

Fully-integrated optical receivers silicon photodetector trans-impedance amplifiers (TIA) continuous-time linear equalizer (CTLE)

第一

EI

20240415432899

CMOS integrated circuits ; Continuous time systems ; Differential amplifiers ; Energy efficiency ; Equalizers ; Operational amplifiers ; Optical communication ; Optical receivers ; Photodetectors ; Photons ; Pulse amplitude modulation ; Silicon ; Variable gain amplifiers

Energy Conservation:525.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Amplifiers:713.1 ; Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers:713.5 ; Semiconductor Devices and Integrated Circuits:714.2 ; Optical Communication Systems:717.1 ; Optical Communication Equipment:717.2 ; Control Equipment:732.1 ; Atomic and Molecular Physics:931.3 ; Systems Science:961

IEEE

School of Microelectronics, Southern University of Science and Technology, Shenzhen, China

Dongshen Zhan,Liping Zhong,Wentao Zhou,et al. A 28-Gb/s PAM-4 Fully-Integrated Optical Receiver with High-Speed Silicon Photodetector in 28-nm CMOS[C],2023:192-193.