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Time to digital converter

A time-to-digital conversion and time-to-digital technology, which is applied in time-to-digital converters, electrical unknown time interval measurement, and time interval measurement devices, etc., can solve the problem that the space shuttle cannot return safely.

Active Publication Date: 2016-11-30
SOI MICRO CO LTD
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AI Technical Summary

Problems solved by technology

A time error of 1 second will cause ships sailing in the sea to deviate from the course by hundreds of meters, and a time error of 1 microsecond will cause the space shuttle to fail to return safely.

Method used

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] In recent years, TDC technology has begun to appear in silicon-based integrated circuits. Due to the rapid development of CMOS process technology, the reduction of its feature size improves the integration and robustness of CMOS circuits, reduces circuit power consumption and cost, and makes people more inclined to convert analog signals into digital signals for processing, so analog The digital converter becomes an essential module. However, when the CMOS process develops to a smaller feature size, the traditional voltage-mode analog-to-digital converter is limited by factors such as feature size reduction and power supply voltage reduction, and it is difficult to meet the high-resolution requirements, so scholars...

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Abstract

The invention discloses a time to digital converter which comprises a time to digital converting unit, a digital to time converting unit and a time amplifier. The time to digital converting unit is used for digitally quantizing time so as to achieve a time digital quantization function. The digital to time converting unit is used for extracting the time margin part which is smaller than the quantization time unit and not be quantized. The time amplifier is used for linearly amplifying the time margin part extracted by the digital to time converting unit so as to further conduct digital quantization. By means of the time to digital converter, the performance requirements of high time precision, wide measuring range, high converting rate and the like can be met. The time to digital converter can improve the precision and speed of time to digital conversion when applied in the technical application field of time mode signal processing.

Description

technical field [0001] The present invention relates to the application field of time mode signal processing technology, in particular to a high-precision time-to-digital converter (time to digital converter), such as an all-digital phase-locked loop, a distance meter, a flow meter, and the like. Background technique [0002] From application engineering fields such as communications, digital oscilloscopes, and medical imaging to theoretical research fields such as atomic physics and astronomical observation, as well as aerospace and military technology fields such as laser, radar ranging, and satellite positioning, high-precision time interval measurement technology is inseparable. . Different application environments have different requirements on the accuracy of time interval measurement. In daily life, the accuracy of time intervals on the order of minutes can meet the common needs of people, but for the application of modern military, communication, navigation and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04F10/00
CPCG04F10/005
Inventor 王小松刘昱张海英
Owner SOI MICRO CO LTD
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