基于碳基500nm工艺的双采样真随机数发生器  

Dual-Sampling True Random Number Generator Based on Carbon-Based 500 nm Process

作　　者：蔡铭嫣 张九龄 陈智峰 廖文丽 陈译 陈铖颖 Cai Mingyan;Zhang Jiuling;Chen Zhifeng;Liao Wenli;Chen Yi;Chen Chengying(School of Opto-Electronic and Communication Engineering,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024

出　　处：《半导体技术》2024年第8期732-741,757,共11页Semiconductor Technology

基　　金：福建省自然科学基金(2023H0052);厦门市重大科技计划项目(3502Z20221022)。

摘　　要：碳纳米管场效应晶体管(CNTFET)因其极小的尺寸、超高的载流子迁移率、准一维结构的弹道输运等特性,顺应了未来集成电路高集成化和微型化的发展趋势。基于课题组构建的500 nm碳基工艺设计包,设计了一款真随机数发生器(TRNG)。碳基真随机数发生器利用慢时钟振荡器对快时钟振荡器进行采样获取随机源,通过在慢时钟振荡器中添加电阻热噪声以增加环形振荡器的相位抖动,经单比特频数测试、重叠子序列检测等随机性测试,证实本设计提高了熵源的非相关性与不可预测性。碳基真随机数发生器的最高工作频率达到7.04 MHz,功耗为1.98 mW,版图面积为2.3 mm×1.5 mm。输出序列通过了随机性检验,适用于现代密码系统的纳米级芯片。The carbon nanotube field effect transistor(CNTFET)conformsto thefuture development trend of high integration and miniaturization of integrated circuits due to its characteristics of extremely small size,ultra-high carrier mobility and ballistic transport of quasi-one-dimensional structure.A true random number generator(TRNG)was designed based on the 500 nm carbon-based process de-sign kit which constructed by this research group.The carbon-based true random number generator utilized a slow clock oscillator to sample a fast clock oscillator for obtaining a random source,and added resistive thermal noise to the slow clock oscillator to increase the phase jitter of the ring oscillator.And the randomness tests such as single bit frequency test and overlapping subsequence detection confirm that this design improves the non-correlation and unpredictability of the entropy source.The carbon-based true random number generator has a maximum operating frequency of 7.04 MHz,a power consumption of 1.98 mW and a layout area of 2.3 mm×1.5 mm,The output sequence passes the randomness test,and is suitable for modern cryptosystems of the nanoscale chips.

关 键 词：碳纳米管场效应晶体管(CNTFET) 紧凑模型 真随机数发生器(TRNG) 振荡器 时钟抖动 

分 类 号：TN710.4[电子电信—电路与系统] TN432