A 6-bit 56-GSa/s DAC in 55 nm SiGe BiCMOS

Bart Moeneclaey,Michiel Verplaetse,Hannes Ramon,Nishant Singh,Haolin Li,Joris Van Kerrebrouck,Xin Yin,Guy Torfs

2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS)（2021）

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Abstract

We present a 6-bit 56-GSa/s digital-to-analog converter (DAC), implemented in 55 nm SiGe BiCMOS. It consumes 2.36 W of which 0.77 W is utilized in the DAC core. Experiments show an analog 3-dB bandwidth exceeding 28 GHz and an effective number of bits (ENOB) of 3.9. We demonstrate transmission of 112 Gb/s four-level pulse-amplitude modulation (PAM-4) and 168 Gb/s PAM-8 over a channel consisting of...

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Key words

DAC,BiCMOS,PAM-4,PAM-8

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