Josephson D/A converter with fundamental accuracy

Josephson D/A converter with fundamental accuracy

A binary sequence of series arrays of shunted Josephson junctions is used to make a 14-b D/A converter. With 13 bias lines, any step number in the range -8192 to +8192 -1.2 V to +1.2 V can be selected in the time required to stabilize the bias current (a few microseconds). The circuit is a fast accu...

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Veröffentlicht in:IEEE transactions on instrumentation and measurement 1995-04, Vol.44 (2), p.223-225
Hauptverfasser: Hamilton, C.A., Burroughs, C.J., Kautz, R.L.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Binary sequences
Circuit synthesis
Electrical and electronic components, instruments and techniques
Electronics
Exact sciences and technology
Frequency
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Josephson devices
Josephson junctions
Measurement standards
Microwave circuits
Microwave generation
NIST
Particle measurements
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
Voltage
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Zusammenfassung:A binary sequence of series arrays of shunted Josephson junctions is used to make a 14-b D/A converter. With 13 bias lines, any step number in the range -8192 to +8192 -1.2 V to +1.2 V can be selected in the time required to stabilize the bias current (a few microseconds). The circuit is a fast accurate dc reference, and it makes possible the digital synthesis of ac waveforms whose amplitudes derive directly from the internationally accepted definition of the volt.< >
ISSN:0018-9456
1557-9662
DOI:10.1109/19.377816