Adaptive variable gain delay amplifier

Abstract

The invention provides an adaptive variable gain delay amplifier, which comprises a double-path adaptive pulse shrinking circuit and a variable gain delay amplifying circuit, wherein the double-path adaptive pulse shrinking circuit is used for receiving two paths of pulse signals and shrinking the delay between the two paths of pulse signals when the delay of the two paths of pulse signals is greater than a threshold value, so that the delay of the two paths of pulse signals is adaptive to the input variable range of the variable gain delay amplifying circuit; and the variable gain delay amplifying circuit is used for amplifying the delay of the two paths of pulse signals output by the two paths of adaptive pulse shrinking circuits based on the metastable state effect of the RS latch. Theimplementation and control mode of the delay amplifier provided by the invention has the advantages of simple structure, controllable gain and strong stability; a mode of preprocessing input by adopting a double-path adaptive pulse shrinking unit is adopted, the linear interval and the dynamic gain are improved, and the gain is controllable.

Description

technical field [0001] The present invention relates to the field of semiconductor integrated circuits, in particular to a delay amplifier, in particular to an adaptive variable gain delay amplifier. Background technique [0002] As complementary metal-oxide-semiconductor (CMOS) technology progresses below 10nm, voltage-signal-based designs become more challenging due to reduced gain, increased leakage current, and reduced signal power. The reduction of the process makes the delay of the gate smaller, and the use of delay information for information processing becomes more competitive. The processing technology based on delay information can better adapt to the development trend of IC design towards smaller area, higher integration density and faster switching speed. In time-domain information processing, a time-to-digital converter (TDC), as a front-end module, is responsible for quantifying the time interval between two rising edges and extracting the information therein....

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Problems solved by technology

[0005] For the defective in the prior art, the purpose of the present invention is to provide a kind of self-adaptive variable gain time-delay amplifier, it combines the amplifying circuit based on the metastable state effect of SR latch with the self-adaptive pulse constriction circuit, Solve the problem that the linear range of the existing delay amplifier is small

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