A 3.5K 4-6 GHz RF-DAC for Cryogenic Quantum Applications in 28-nm Bulk CMOS

被引：0

作者：

Guo, Yanshu ^{[1
]}

Li, Yaoyu ^{[2
]}

Huang, Wenqiang ^{[2
]}

Liu, Qichun ^{[3
]}

Li, Tiefu ^{[2
,3
]}

Wang, Zhihua ^{[2
]}

Jiang, Hanjun ^{[2
]}

Zheng, Yuanjin ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[2] Tsinghua Univ, Sch Integrated Circuits, Beijing, Peoples R China

[3] Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2024年 / 71卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Capacitors; Switches; Cryogenics; Qubit; Transformers; Transistors; Capacitance; Cryogenic circuits; Cryo-CMOS; quantum computing; RF-DAC;

D O I：

10.1109/TCSII.2024.3386843

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：

A 4-6GHz cryogenic radio frequency digital-to-analog converter (RF-DAC) is presented for quantum computing application in this brief. The RF-DAC is implemented with a switched-capacitance topology for its characteristic of being insensitive to cryogenic temperature. A cross-connection switched capacitor array is also integrated into the RF-DAC to enhance the power on/off ratio. The cryogenic characteristics of a passive transformer are discussed in detail with a lumped model and accuracy EM simulation method. Fabricated in a 28nm CMOS process and verified at 3.5K, the RF-DAC can generate the driving pulse correctly with a sampling clock frequency of up to 2GS/s. The achieved SNDR and power on/off ratio are better than 41.3dB and 36dB, respectively. The output power of the RF-DAC is >-13 dBm over a band of 4-6GHz.

引用

页码：4071 / 4075

页数：5

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