Cursor annular time-digit converter

A technology of time-to-digital converters, applied in time-to-digital converters, electrical unknown time interval measurement, devices for measuring time intervals, etc., can solve the problems of large overall area, low quantization accuracy, and high power consumption

Active Publication Date: 2016-12-07
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a vernier ring time-to-digital converter, which is used to solve the problem of quantization accuracy of th...

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Embodiment Construction

[0094] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0095] see Figure 3 to Figure 16 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic concept of the present invention, although only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and ...

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Abstract

The invention provides a cursor annular time-digit converter. The cursor annular time-digit converter comprises a first pulse width generator, a quick voltage control delay chain, a second pulse width generator, a slow voltage control delay chain and a comparator array. The cursor annular time-digit converter has high quantization precision and a few structures, and the area can be effectively reduced; when a comparator in the comparator array turns over for the first time, the quick voltage control delay chain and the slow voltage control delay chain can both reset, so that signals of the quick voltage control delay chain and the slow voltage control delay chain are both at low levels, jumping never happens again, and consequently power consumption of work is lowered.

Description

technical field [0001] The invention relates to the field of time-to-digital conversion circuits, in particular to a vernier ring time-to-digital converter. Background technique [0002] Time to Digital Converter (TDC) quantizes a continuous time interval into a digital signal through certain technical means. TDC is widely used in all digital phase-locked loops (ADPLL), high-energy physics experiments, space ranging, biological detection, 3D imaging and other fields. [0003] In terms of quantization accuracy, the quantization accuracy of the vernier-type time-to-digital conversion circuit is very high, while the traditional vernier-type TDC is limited by the link length, and its quantifiable time range is very small. In 2010, Jianjun Yu and others proposed a vernier ring TDC using a ring oscillator structure. The schematic diagram of its realization is as follows figure 1 shown. This structure can greatly increase the time range of quantization while maintaining high pre...

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Application Information

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IPC IPC(8): G04F10/00
CPCG04F10/005
Inventor 汪辉黄景林章琦汪宁田犁叶汇贤黄尊恺
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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