A linearity testing of cascaded analog mixed-signal blocks using SEIR method

Tatsuya Ishikawa, Chia Wei Pai, Hiroki Ishikuro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a method to separate distortions of the input signal, amplifier, and analog-to-digital converter (ADC), which are cascaded blocks in the testing of an analog front-end system. The proposed technique extends the stimulus error identification and removal (SEIR) method to separate the low-quality input test signal, the nonlinearity of amplifier and ADC. The system model was built by using MATLAB/Simulink, and the nonlinearity of the input signal with distortion, amplifier, and ADC were successfully separated. With a 12-bit ADC, the estimation error of each block is less than 1 LSB in the simulation, and the proposed method was verified by measurement. The relations between the estimation error, calculation cost and each parameter in the proposed method are systematically studied.

Original languageEnglish
Title of host publicationI2MTC 2020 - International Instrumentation and Measurement Technology Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728144603
DOIs
Publication statusPublished - 2020 May
Event2020 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2020 - Dubrovnik, Croatia
Duration: 2020 May 252020 May 29

Publication series

NameI2MTC 2020 - International Instrumentation and Measurement Technology Conference, Proceedings

Conference

Conference2020 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2020
Country/TerritoryCroatia
CityDubrovnik
Period20/5/2520/5/29

Keywords

  • ADC
  • Analog-front-end
  • Integral nonlinearity (INL)
  • Stimulus error identification and removal (SEIR) method

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Instrumentation

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