A 7-Bit 150-GSa/s DAC in 5nm FinFET CMOS

We present a 7-bit wireline source-series terminated (SST) digital-to-analog converter (DAC) in 5nm FinFET CMOS. The number of unit cells is reduced by employing SST cells with relative weight 1 and 4. From an eight-phase clock, each unit cell creates clock pulses which are in turn used to control the three-stage 8: 1 multiplexer. At 150 GSa/s, the ENOB was measured to be 4.1bit for a 72.8GHz sinewave. The DAC consumes 621mW from a 0.9V and 0.96V supply. Eye diagrams of 150Gbit/s non-return to zero modulation and 300Gb/s P AM-4 are measured, pre-equalized using a 10-tap feedforward equalizer.

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Publication Details

Published
2025-06-08
DOI
https://doi.org/10.23919/vlsitechnologyandcir65189.2025.11075168
Citations
2
Primary Topic
Advancements in Semiconductor Devices and Circuit Design
Type
article
Field-Weighted Citation Impact
1.46

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article

A 7-Bit 150-GSa/s DAC in 5nm FinFET CMOS

Ewout Martens, Bart Moeneclaey, Angelo Parisi, Joris Lambrecht et al.
2 citations
Advancements in Semiconductor Devices and Circuit Design
1.46
article

A 7-Bit 150-GSa/s DAC in 5nm FinFET CMOS

Ewout Martens, Bart Moeneclaey, Angelo Parisi, Joris Lambrecht, Gertjan Coudyzer, Jan Craninckx, Joris Van Kerrebrouck, Anirudh Kankuppe, Peter Ossieur
article en
2 citations

Abstract

We present a 7-bit wireline source-series terminated (SST) digital-to-analog converter (DAC) in 5nm FinFET CMOS. The number of unit cells is reduced by employing SST cells with relative weight 1 and 4. From an eight-phase clock, each unit cell creates clock pulses which are in turn used to control the three-stage 8: 1 multiplexer. At 150 GSa/s, the ENOB was measured to be 4.1bit for a 72.8GHz sinewave. The DAC consumes 621mW from a 0.9V and 0.96V supply. Eye diagrams of 150Gbit/s non-return to zero modulation and 300Gb/s P AM-4 are measured, pre-equalized using a 10-tap feedforward equalizer.

Ghent University Hospital (BE), Ghent University (BE), iMinds (BE), IMEC (BE)
Taiwan Semiconductor Manufacturing Company
Affordable and clean energy
Openalex Percentile: Top 16%
Advancements in Semiconductor Devices and Circuit Design
1.46
DOIOpen Access PDFOpenAlex
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A 7-Bit 150-GSa/s DAC in 5nm FinFET CMOS — Ewout Martens, Bart Moeneclaey, et al. · (2025) | TGRS Research Map | TGRS