Name
Title | ||
|---|---|---|
A 900-MS/s SAR-Based Time-Interleaved ADC With a Fully Programmable Interleaving Factor and On-Chip Scalable Background Calibrations |
Abstract | ||
|---|---|---|
This brief presents a 12-bit successive approximation register (SAR)-based time-interleaved (TI) analog-to-digital converter (ADC) with a fully programmable interleaving factor. A total of six SAR sub-ADCs can be time-interleaved. The interleaving factor is programmable from 2 to 6, resulting in an overall sampling rate from 300 to 900MS/s. On-chip offset, gain, and timing skew background calibrations allow reducing the interleaving spurs to less than −73dBc in every configuration. In particular, the proposed difference-based skew calibration efficiently operates in any configuration, not being limited to power-of-2 interleaving factors. Fabricated in a 28-nm bulk CMOS process, the presented TI-ADC achieves a Nyquist-frequency signal-to-noise plus distortion ratio (SNDR) and a spurious-free dynamic range (SFDR) of 52.01dB and 58.82dBc at 900MS/s, respectively, with an active area occupation of 0.48 mm
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and similar metrics across all the configurations. Featuring a power dissipation of 42.96mW at 900MS/s, the Nyquist-frequency Schreier figure of merit (FoM) is 152.2dB, whereas the Walden one is 146.6fJ/Conv-step. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/TCSII.2022.3182217 | IEEE Transactions on Circuits and Systems II: Express Briefs |
Keywords | DocType | Volume |
Analog-to-digital converters (ADCs),successive approximation register (SAR),time-interleaving,timing skew,digital calibrations | Journal | 69 |
Issue | ISSN | Citations |
9 | 1549-7747 | 0 |
PageRank | References | Authors |
0.34 | 15 | 10 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Gabriele Bè | 1 | 0 | 0.34 |
| Angelo Parisi | 2 | 0 | 0.34 |
| Luca Bertulessi | 3 | 0 | 0.34 |
| Luca Ricci | 4 | 0 | 0.34 |
| Lorenzo Scaletti | 5 | 0 | 0.34 |
| Mario Mercandelli | 6 | 0 | 0.34 |
| Andrea L. Lacaita | 7 | 320 | 42.41 |
| Salvatore Levantino | 8 | 351 | 43.23 |
| Carlo Samori | 9 | 349 | 39.76 |
| Andrea Bonfanti | 10 | 269 | 36.37 |