DocumentCode :
1447425
Title :
An All-Digital Self-Calibration Method for a Vernier-Based Time-to-Digital Converter
Author :
Rashidzadeh, Rashid ; Ahmadi, Majid ; Miller, William C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Windsor, Windsor, ON, Canada
Volume :
59
Issue :
2
fYear :
2010
Firstpage :
463
Lastpage :
469
Abstract :
This paper presents a new calibration method for a Vernier-based time-to-digital converter (TDC). In the proposed method, delay lines in the TDC are configured as on-chip ring oscillators for generating a sequence of time events. These time events are applied to the TDC in the calibration mode, and then, the probability distribution of output codes is determined. The variations of the quantization step and the actual transfer characteristic representing the TDC are estimated through statistical analysis of the output codes. The proposed method eliminates the need for accurate external sources typically used for TDC calibration. Simulation and experimental results using a field-programmable gate array platform indicate that the method can successfully be employed to calibrate high-resolution TDCs with reasonable accuracy.
Keywords :
analogue-digital conversion; calibration; oscillators; probability; Vernier-based time-to-digital converter; all-digital self-calibration method; calibration mode; field-programmable gate array platform; on-chip ring oscillators; output codes; probability distribution; quantization step; Calibration; Vernier delay line (VDL); delay lines; phase-locked loop (PLL); time-to-digital converter (TDC);
fLanguage :
English
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9456
Type :
jour
DOI :
10.1109/TIM.2009.2024699
Filename :
5256168
Link To Document :
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