A time-mode LDI-based resonator for a band-pass ΔΣ TDC

Ziabakhsh, Soheyl, Gagnon, Ghyslain et Roberts, Gordon W.. 2017. « A time-mode LDI-based resonator for a band-pass ΔΣ TDC ». In 2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS) (Boston, MA, USA, Aug. 6-9, 2017) pp. 1296-1299. Piscataway, NJ, USA : IEEE.
Compte des citations dans Scopus : 3.

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Résumé

In this paper, a time-mode resonator is presented that is used to realize a second-order bandpass ΔΣ time-to-digital converter (TDC). The resonator is constructed as a cascade of two lossless discrete-time integrators implemented using time-latches and some digital logic in a negative feedback configuration. This paper presents for the very first time the means in which time-mode circuits are used in a negative feedback loop. This achieves high-speed time-mode signal processing without the limitations imposed by switched-capacitor (SC) circuit techniques such as the matching of capacitors to realize precise signal gains. Instead, circuit precision is realized using an on-chip calibration circuit referenced to the main system clock to adjust for timing variations in the time-mode circuits. The operation of the timemode resonator is verified by realizing a second-order BP ΔΣ TDC. The bandpass noise-shaping is validated with transistor-level simulations.

Type de document:	Compte rendu de conférence
Professeur:	Professeur Gagnon, Ghyslain
Affiliation:	Génie électrique
Date de dépôt:	22 nov. 2017 20:23
Dernière modification:	05 déc. 2022 19:39
URI:	https://espace2.etsmtl.ca/id/eprint/15974

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