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Novel time to digital converter

A time-to-digital converter technology, applied in the field of communication, can solve the problems of large area and power consumption, and achieve the effect of improving linearity and rising and falling time

Active Publication Date: 2018-07-27
AMOLOGIC (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditionally, an inverter is used as a quantization scale for a single time interval, which can achieve high resolution; however, the realized range and area are positively correlated, and a wide range means larger area and power consumption

Method used

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 with figure 2 As shown, in a preferred embodiment, a novel time-to-digital converter is proposed, which may include:

[0029] The polarity detection module 10 includes two clock input ports for receiving clock signals (the first clock input port CLK1 and the second clock input port CLK2 in this embodiment), and includes the first clock output port START, the second clock output port Clock output port STOP and status output port Polar;

[0030] The polarity detection module 10 performs timing analysis on the clock signals input by the two clock input ports, outputs the clock signal with advanced timing from the first clock output port START, and outputs the clock signal with delayed timing from the second clock output port STOP, and Output the timing comparison result signal of the two clock signals from the state output port ...

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Abstract

The invention relates to the technical field of communication, in particular to a novel time to digital converter which comprises a polarity detection module and a time to digital conversion module. The time to digital conversion module comprises a digital coding unit, a ring vibration enabling unit, multiple differential time delay units and multiple trigger units, and the differential time delayunits are sequentially connected serially to form a closed loop; each differential time delay unit comprises a first input end, a second input end, a first output end and a second output end, and differential signals output by the first output end and the second output end of each differential time delay unit are complementary. Mismatching between ascending and descending time of a phase inverterand sampling of a trigger can be improved obviously to enable signals entering the trigger units to be phase-complementary signals, so that digital conversion linearity is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a novel time-to-digital converter. Background technique [0002] Measurement techniques for time intervals, especially high-precision time intervals (picoseconds [0003] 1ps=10E-12s measurement technology is of great significance, whether it is in engineering fields such as telecommunication, chip design and digital oscilloscope, or theoretical research such as atomic physics and astronomical observation, as well as aerospace and military technology fields such as laser ranging and satellite positioning Both are inseparable from high-precision time interval measurement technology. [0004] The traditional three-stage time-to-digital converter based on a phase-locked loop, the main key is to quantize the time interval by generating clocks with different frequencies and phases evenly distributed by the phase-locked loop. Time-to-digital converters are divided into high, me...

Claims

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Application Information

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IPC IPC(8): G04F10/00
CPCG04F10/005H03K3/35625H03K3/0372
Inventor 王岩
Owner AMOLOGIC (SHANGHAI) CO LTD