一種低功耗高噪聲源真隨機數(shù)設(shè)計

魏子魁; 胡毅; 金鑫; 李振國; 馮文楠; 馮曦; 唐曉柯

doi:10.11999/JEIT190719

一種低功耗高噪聲源真隨機數(shù)設(shè)計

doi: 10.11999/JEIT190719 cstr: 32379.14.JEIT190719

1.
北京智芯微電子科技有限公司國家電網(wǎng)公司重點實驗室電力芯片設(shè)計分析實驗室北京 100192
2.
北京智芯微電子科技有限公司北京市電力高可靠性集成電路設(shè)計工程技術(shù)研究中心北京 100192

基金項目: 國家核高基重大專項(2017ZX01030204)

詳細信息

作者簡介:
魏子魁：男，1989年生，工程師，研究方向為模擬集成電路設(shè)計和測試

胡毅：男，1982年生，工程師，研究方向為模擬集成電路設(shè)計和芯片技術(shù)

金鑫：女，1987年生，工程師，研究方向為模擬集成電路設(shè)計

通訊作者:
魏子魁　weizikui@sgitg.sgcc.com.cn

中圖分類號: TN47
計量
- 文章訪問數(shù): 2693
- HTML全文瀏覽量: 1335
- PDF下載量: 115
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2019-08-29
- 修回日期: 2020-03-04
- 網(wǎng)絡出版日期: 2020-03-31
- 刊出日期: 2020-10-13

A True Random Number Design of Low Power and High Noise Source

1.
State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology, Beijing Smart-Chip Microelectronics Technology Co. Ltd., Beijing 100192, China
2.
Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade, Beijing Smart-Chip Microelectronics Technology Co. Ltd., Beijing 100192, China

Funds: The Core Electronic Devices, High-end Generic Chips and Basic Software Major Project (2017ZX01030204)

摘要

摘要: 通過對一種低功耗高噪聲源真隨機數(shù)發(fā)生器(TRNG)的研究，設(shè)計了一種新型的低頻時鐘電路，可以把電阻熱噪聲放大100倍以上，從而減少低頻時鐘電路的帶寬和電阻值，使電路的面積和功耗減少，并且使低頻時鐘的jitter到達58.2 ns。電路采用SMIC 40 nm CMOS工藝設(shè)計，完成了流片和測試，真隨機數(shù)產(chǎn)生器輸出速度范圍為1.38～3.33 Mbit/s，電路整體功耗為0.11 mW，面積為0.00789 mm²。隨機數(shù)輸出滿足AIS31真隨機數(shù)熵源測試要求，并且通過了國密2安全測試。
- 真隨機數(shù)產(chǎn)生器 /
- 電阻熱噪聲 /
- 低頻時鐘jitter /
- 低功耗
Abstract: Through the research of a True Random Number Generator (TRNG), which is a low-power and high-noise source, a new type of low-frequency clock is designed. It can amplify the thermal noise of resistance more than 100 times, thus reducing the bandwidth and resistance value of the circuit, reducing the area and power consumption of the circuit, and making the jitter of low-frequency clock reach 58.2 ns. The circuit is designed by SMIC 40 nm CMOS technology. The flow sheet and test are completed. The output speed of TRNG ranges from 1.38 to 3.33 Mbit/s. The overall power consumption of the circuit is 0.11 mW and the area is 0.00789 mm². The output of random number meets the test requirement of AIS31 true random number entropy source, and passes the security test of National Secret 2.
- True Random Number Generator (TRNG) /
- Resistance thermal noise /
- Low-frequency oscillator jitter /
- Low power consumption

HTML全文

圖 1 真隨機數(shù)發(fā)生器結(jié)構(gòu)

下載: 全尺寸圖片幻燈片

圖 2 低頻時鐘電路圖

下載: 全尺寸圖片幻燈片

圖 3 帶噪聲的三角波

下載: 全尺寸圖片幻燈片

圖 4 普通電壓放大器放大電阻噪聲原理圖

下載: 全尺寸圖片幻燈片

圖 5 低頻時鐘輸出jitter

下載: 全尺寸圖片幻燈片

圖 6 低頻時鐘jitter的正態(tài)分布情況

下載: 全尺寸圖片幻燈片

圖 7 整體電路版圖

下載: 全尺寸圖片幻燈片

表 1 兩種結(jié)構(gòu)下噪聲電阻值和功耗

指標	噪聲電阻值 (Ω)	信號增益A₁(倍)	信號增益A₂(倍)	噪聲帶寬(MHz)	功耗(mW)
跨阻放大器結(jié)構(gòu)	64 k	1	100	1	0.081
電壓放大器結(jié)構(gòu)	2 M	5	5	80	0.220

下載: 導出CSV

表 2 低頻時鐘頻率仿真結(jié)果

指標	仿真結(jié)果
指標	MIN	TYP	MAX
輸出頻率(MHz)	1.38	2.13	3.34
Jitter(σ{T_cl})(ns)	77.89	58.2	40
功耗(mW)	0.055	0.081	0.110

下載: 導出CSV

表 3 高頻時鐘頻率仿真結(jié)果

仿真	HOSC頻率
仿真	MIN	TYP	MAX
頻率(GHz)	0.186	0.25	0.313
功耗(mW)	0.017	0.024	0.035
占空比(%)	50.09	50.28	50.43

下載: 導出CSV

表 4 幾種不同TRNG 性能比較

方法	基本原理	工藝(nm)	功耗(mW)	速度(Mbit/s)	面積(mm²)	S(mW·mm²·s/Mbit)
文獻[15]	相位抖動	28	0.54	23	0.0375	0.88
文獻[8]	相位抖動	130	0.04	0.1	0.005	2
文獻[10]	熱噪聲	28	0.388	4	0.025	2.43
文獻[16]	熱噪聲	55	0.81	10	0.0124	1
本文	熱噪聲	40	0.11	2	0.0079	0.44

下載: 導出CSV

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