Cryogenic Characterization of 28-nm FD-SOI Ring Oscillators With Energy Efficiency Optimization

被引：23

作者：

Bohuslavskyi, H. ^{[1
]}

Barraud, S. ^{[1
]}

Barral, V. ^{[1
]}

Casse, M. ^{[1
]}

Le Guevel, L. ^{[1
]}

Hutin, L. ^{[1
]}

Bertrand, B. ^{[1
]}

Crippa, A. ^{[2
]}

Jehl, X. ^{[2
]}

Pillonnet, G. ^{[1
]}

Jansen, A. G. M. ^{[2
]}

Arnaud, F. ^{[3
]}

Galy, P. ^{[3
]}

Maurand, R. ^{[2
]}

De Franceschi, S. ^{[2
]}

Sanquer, M. ^{[2
]}

Vinet, M. ^{[1
]}

机构：

[1] CEA, LETI, Minatec Campus, F-38054 Grenoble, France

[2] Univ Grenoble Alpes, CEA, INAC, PHELIQS, F-38054 Grenoble, France

[3] STMicroelectronics, F-38920 Crolles, France

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2018年 / 65卷 / 09期

关键词：

28 nm fully depleted silicon-on-insulator (FD-SOI); body biasing; cryogenic electronics; quantum computing; ring oscillator (RO); ultralow power; QUANTUM COMPUTATION; CMOS; SILICON;

D O I：

10.1109/TED.2018.2859636

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Extensive electrical characterization of ring oscillators (ROs) made in high-kappa metal gate 28-nm fully depleted silicon-on-insulator technology is presented for a set of temperatures between 296 and 4.3 K. First, delay per stage (tau(P)), static current (I-STAT), and dynamic current (I-DYN) are analyzed for the case of the increase of threshold voltage (V-TH) observed at low temperature. Then, the same analysis is performed by compensating V-TH to a constant, temperature-independent value through forward body biasing (FBB). Energy efficiency optimization is proposed for different supply voltages (V-DD) in order to find an optimal operating point combining both high RO frequencies and low-power dissipation. We show that the Energy-Delay product can be significantly reduced at low temperature by applying an FBB voltage (V-FBB). We demonstrate that outstanding performance of RO in terms of speed (tau(P) = 37 ps) and static current (7nA/stage) can be achieved at 4.3 K with V-DD reduced down to 0.325 V.

引用

页码：3682 / 3688

页数：7

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