IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Superconducting bipolar digital-to-analog converter equipped with dual double-flux-quantum amplifier
Yoshinao MizugakiTomoki WatanabeHiroshi Shimada
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JOURNALS FREE ACCESS

2016 Volume 13 Issue 10 Pages 20160242

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Abstract

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.

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© 2016 by The Institute of Electronics, Information and Communication Engineers
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