Superconducting bipolar digital-to-analog converter equipped with dual double-flux-quantum amplifier

IEICE Electronics Express

Yoshinao Mizugaki¹  Hiroshi Shimada¹  Tomoki Watanabe¹ 

[1] Department of Engineering Science, Graduate School of Informatics and Engineering, The University of Electro-Communications (UEC Tokyo)

关键词: Josephson effects;    single-fluq-quantum (SFQ);    niobium integrated circuits;    pulse-frequency modulation;   

DOI  :  10.1587/elex.13.20160242

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(13)Precise voltage generation is a unique feature of superconducting single-flux-quantum (SFQ) circuits, and hence, several SFQ-based digital-to-analog converters (DACs) have been designed for metrological applications. In this letter, we propose a dual double-flux-quantum amplifier (dual-DFQA) that extends DAC output voltage from unipolar to bipolar. An SFQ-based DAC comprising a 4-bit variable pulse number multiplier and a ±20-fold dual-DFQA is fabricated using a niobium integration technology. A 1-kHz, ±0.29-mV sinusoidal voltage waveform is successfully synthesized.

【 授权许可】

Unknown