Commercially available 20-bit digital to analog converters (DACs) have the potential to impact the field of low frequency voltage metrology. We measured a linearity of ±6 µV (±0.6 µV/V full scale) over the 10 V range for such a DAC with a Zener voltage standard in use as its external 10 V reference. This result is a first step toward implementing such a DAC as an ac synthesized source, whose accuracy and stability could be established by a dc voltage standard reference.
Proceedings Title: Conference on Precision Electromagnetic Measurements Conference Digest
Conference Dates: July 1-6, 2012
Conference Location: National Harbor, MD
Conference Title: Conference on Precision Electromagnetic Measurements
Pub Type: Conferences
Digital-analog conversion, Josephson arrays, signal synthesis, standards, voltage measurement