Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.15066 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917783023910912 |
|---|---|
| author | Saux, Brendan Borgmans, Jonas Raman, Johan Rombouts, Pieter |
| author_facet | Saux, Brendan Borgmans, Jonas Raman, Johan Rombouts, Pieter |
| contents | In this work, a 3.5 GS/s voltage-controlled oscillator (VCO) analog-to-digital converter (ADC) using multi-stage noise shaping (MASH) is presented. This 28nm CMOS ADC achieves second-order noise shaping in an easily-scalable, open-loop configuration. A key enabler of the high-bandwidth MASH VCO ADC is the use of a multi-bit estimated error signal. With an OSR of 16, an SNDR of 67 dB and DR of 68 dB are achieved in 109.375 MHz bandwidth. The full-custom pseudo-analog circuits consume 9 mW, while the automatically generated digital circuits consume another 24 mW. A $\mathbf{FoM_{DR} = 163}$ dB and core area of $\mathbf{0.017\,\mathbf{mm}^2}$ are obtained. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_15066 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A 3.5 GS/s 1-1 MASH VCO ADC With Second-Order Noise Shaping Saux, Brendan Borgmans, Jonas Raman, Johan Rombouts, Pieter Systems and Control In this work, a 3.5 GS/s voltage-controlled oscillator (VCO) analog-to-digital converter (ADC) using multi-stage noise shaping (MASH) is presented. This 28nm CMOS ADC achieves second-order noise shaping in an easily-scalable, open-loop configuration. A key enabler of the high-bandwidth MASH VCO ADC is the use of a multi-bit estimated error signal. With an OSR of 16, an SNDR of 67 dB and DR of 68 dB are achieved in 109.375 MHz bandwidth. The full-custom pseudo-analog circuits consume 9 mW, while the automatically generated digital circuits consume another 24 mW. A $\mathbf{FoM_{DR} = 163}$ dB and core area of $\mathbf{0.017\,\mathbf{mm}^2}$ are obtained. |
| title | A 3.5 GS/s 1-1 MASH VCO ADC With Second-Order Noise Shaping |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2409.15066 |