Radiation-proof ultrahigh-speed triggering circuit and spaceflight ultrahigh-speed trigger

Abstract

The invention is applicable to the field of an integrated circuit and provides a radiation-proof ultrahigh-speed triggering circuit and a spaceflight ultrahigh-speed trigger. The radiation-proof ultrahigh-speed triggering circuit comprises a first sensitive amplifier, a second sensitive amplifier, a logic gate circuit and an RS (reset-set) latch, wherein the first and second sensitive amplifiers have double interlocking structures, data is stored into different nodes through two-way interlocking, the logic gate circuit carries out SEU (single particle upset) interference resistance processing on data in different nodes, and generates pre-charging signals, setting signals or resetting signals, the RS latch with a crossed coupling structure forms a phase inverter pair structure when receiving the pre-charging signals for realizing the data latching, or the output time delay avoidance is realized through a symmetrical structure during setting signal or resetting signal receiving. The radiation-proof ultrahigh-speed triggering circuit and the spaceflight ultrahigh-speed trigger have the advantages that the two sensitive amplifiers adopting the DICE structures are used as the front stage of the trigger for preventing the SEU influence, in addition, the front stage output is output to a later stage of RS latch through the logic gate operation, the ascending and descending edge difference-free output is realized through the two symmetrical RS latches with the crossed coupling structures, and the functions of high-speed data transmission is realized.

Description

technical field [0001] The invention belongs to the field of integrated circuits, in particular to an anti-irradiation ultra-high-speed trigger circuit and an aerospace ultra-high-speed trigger. Background technique [0002] In modern integrated circuit design, flip-flops play an important role in the system, especially when flip-flops are used in aerospace equipment, in addition to more prominent performance requirements, there is also a very important point that requires sufficient resistance Irradiation capability, because in the space radiation environment, the device is easily affected by single event upset (SEU), which may affect the function of the device and output wrong data. [0003] At present, the flip-flop on the aerospace equipment generally adopts a flip-flop based on a sense amplifier (Sense-Amplifier-based Flip-Flop, SAFF), and the flip-flop based on a sense amplifier includes a latch-type sense amplifier 11 and an RS latch 12 Composition, the latch-type se...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide an anti-irradiation ultra-high-speed trigger circuit, which aims to solve the problems of limited performance and susceptibility to single-event upset interference when traditional triggers are used in aerospace environments

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