An Adaptive Variable Gain Delay Amplifier

Abstract

The present invention provides an adaptive variable gain time-delay amplifier, which includes: a dual-channel self-adaptive pulse contraction circuit, used to receive two-channel pulse signals, and when the delay of the two-channel pulse signals is greater than the threshold, the two-channel pulse The delay between the signals is contracted so that the delay is adapted to the input variable range of the variable gain delay amplifier circuit; the variable gain delay amplifier circuit is based on the metastable effect of the RS latch to The delay of the dual-channel pulse signal output by the dual-channel self-adaptive pulse shrinkage circuit is amplified. The implementation and control method of the delay amplifier provided by the present invention has the advantages of simple structure, controllable gain, and strong stability; the method of preprocessing the input by using a dual-path adaptive pulse contraction unit improves the linear interval and dynamic gain , 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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