A 65-nm CMOS Continuous-Time Pipeline ADC Achieving 70-dB SNDR in 100-MHz Bandwidth
In: IEEE Solid-State Circuits Letters, Jg. 4 (2021), S. 92-95
Online
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Zugriff:
We describe the design principles and circuit details of a three-stage continuous-time pipeline (CTP) ADC that achieves 70-dB SNDR in a 100-MHz bandwidth while sampling at 800 MHz. Implemented in 65-nm CMOS, the ADC is easy to drive and incorporates an inherent anti-alias filter that achieves 60-dB rejection in the first Nyquist band. Each pipeline stage is realized using a second-order Rauch-filter-based residue amplifier that incorporates a 9-level resistive DAC and an RC-delay line. A dummy-switching scheme relaxes DAC reference-buffer requirements. The back-end ADC is a $4\times $ time-interleaved 7-bit SAR converter. The Schreier and Walden FoMs of our ADC are 165.4 dB and 56.1 fJ/level, respectively.
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A 65-nm CMOS Continuous-Time Pipeline ADC Achieving 70-dB SNDR in 100-MHz Bandwidth
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Autor/in / Beteiligte Person: | Manivannan, Saravana ; Pavan, Shanthi |
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Zeitschrift: | IEEE Solid-State Circuits Letters, Jg. 4 (2021), S. 92-95 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2021 |
Medientyp: | unknown |
ISSN: | 2573-9603 (print) |
DOI: | 10.1109/lssc.2021.3071965 |
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