Two-Tone Signal Generation for ADC Testing

Keisuke KATO; Fumitaka ABE; Kazuyuki WAKABAYASHI; Chuan GAO; Takafumi YAMADA; Haruo KOBAYASHI; Osamu KOBAYASHI; Kiichi NIITSU

doi:10.1587/transele.E96.C.850

Special Section on Analog Circuits and Related SoC Integration Technologies

Two-Tone Signal Generation for ADC Testing

Keisuke KATO, Fumitaka ABE, Kazuyuki WAKABAYASHI, Chuan GAO, Takafumi YAMADA, Haruo KOBAYASHI, Osamu KOBAYASHI, Kiichi NIITSU

Author information

Keisuke KATO
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Fumitaka ABE
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Kazuyuki WAKABAYASHI
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Chuan GAO
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Takafumi YAMADA
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Haruo KOBAYASHI
Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University
Osamu KOBAYASHI
Semiconductor Technology Academic Research Center (STARC)
Kiichi NIITSU
Department of Electrical Engineering and Computer Science, Graduate School of Engineering, Nagoya University

Keywords: ADC testing, two-tone signal, intermodulation distortion, arbitrary waveform generator, ΣΔ DAC, digital pre-distortion, distortion shaping

JOURNAL RESTRICTED ACCESS

2013 Volume E96.C Issue 6 Pages 850-858

DOI https://doi.org/10.1587/transele.E96.C.850

Details

Abstract

This paper describes algorithms for generating low intermodulation-distortion (IMD) two-tone sinewaves, for such as communication application ADC testing, using an arbitrary waveform generator (AWG) or a multi-bit ΣΔ DAC inside an SoC. The nonlinearity of the DAC generates distortion components, and we propose here eight methods to precompensate for the IMD using DSP algorithms and produce low-IMD two-tone signals. Theoretical analysis, simulation, and experimental results all demonstrate the effectiveness of our approach.

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