Complementary type metal oxidizing layer semiconductor noise generator

Abstract

The invention relates to the noise generator technical field. The invention discloses a complementary metal oxide semiconductor noise generator, comprising a bias circuit which is used for providing DC working points for a dual-drain complementary metallic oxide semiconductor transistor current mirror and a differential amplifier; the dual-drain complementary metallic oxide semiconductor transistor current mirror is used for converting slight noise current signals into amplified or larger differential voltage signals which are then output to the differential amplifier; the invention also comprises the differential amplifier which is used for converting differential both-terminal signals input by the dual-drain complementary metallic oxide semiconductor transistor current mirror into single-terminal signals and amplifies and outputs the single-terminal signals. By adopting the CMOS process which is widely applied, the invention greatly reduces the power loss of noise generator and well solves the problem that reactive label working distance is shortened even the power loss is only a plurality of MuW.

Description

technical field [0001] The invention relates to the technical field of noise generators, in particular to a low power consumption complementary metal oxide semiconductor (CMOS) noise generator. Background technique [0002] The noise generator is the most important component of a random number generator. The noise generator on the low-power CMOS process is a necessary part of the design of a low-power CMOS true random number generator, especially in the true random number generator used in RFID tags, which is a key technology. [0003] RFID tags have strict requirements on power consumption, especially passive RFID tags. The noise generator composed of ordinary CMOS transistors as the noise source consumes a lot of power. Because the noise of ordinary CMOS tubes is not large enough, complex circuits are needed to effectively amplify the noise to a usable range, so more energy is consumed. [0004] For passive radio frequency identification tags, the power consumption of ...

AI Technical Summary

Problems solved by technology

Noise generators composed of ordinary CMOS tubes as noise sources consume a lot of power

Because the noise of ordinary CMOS tubes is not large enough, complex circuits are needed to effectively amplify the noise to a usable range, so more energy is consumed

[0004] For passive RFID tags, the power consumption of each unit is generally lower than 1μW, so as to shorten the working distance of the tag insignificantly

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