Highly Efficient Waveform Acquisition Condition in Equivalent-Time Sampling System

Sasaki, Y.; Zhao, Yujie; Kuwana, Anna; Kobayashi, Haruo

doi:10.1109/ats.2018.00045

Cited by 18 publications

(3 citation statements)

References 3 publications

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“…Depending on the relationship between 𝑓𝑓 𝐶𝐶𝐶𝐶𝐶𝐶 and 𝑓𝑓 𝑠𝑠𝑠𝑠𝑠𝑠 , the waveform acquisition efficiency of the input signal waveform is different; this efficiency is an issue for sampling oscilloscope applications, and Sasaki et al clarified the relationship between the "golden ratio" of the frequency values of 𝑓𝑓 𝐶𝐶𝐶𝐶𝐶𝐶 and 𝑓𝑓 𝑠𝑠𝑠𝑠𝑠𝑠 that can acquire waveforms with high efficiency [12].…”

Section: Methods Of Adjusting Sampling Clock Frequency and Initial Ph...mentioning

confidence: 99%

Consideration on Input Signal for ADC Histogram Test in Short Time

Zhao¹,

Kuwana²,

Du³

et al. 2020

AEF

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This paper describes two algorithms for generating test signals to efficiently test the linearity of ADCs. Linearity is an important testing item for ADCs, and it takes a long time (hence is costly) to test especially low-sampling-rate, high-resolution ADCs. We have proposed to generate a test signal consisting of multiple-sine waves, to precisely test the linearity for specific important codes (such as around the center of the output codes), using an arbitrary waveform generator (AWG) and an analog filter in our previous studies. Here, we formulate them for general use. Their verification is performed on a single sine wave, and good results are obtained to show the validity of the derivation algorithm.

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Section: Methods Of Adjusting Sampling Clock Frequency and Initial Ph...mentioning

confidence: 99%

Consideration on Input Signal for ADC Histogram Test in Short Time

Zhao¹,

Kuwana²,

Du³

et al. 2020

AEF

Self Cite

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“…One of his students found by extensive simulations that the golden ratio (1.6180..) is the most efficient for avoiding the waveform missing phenomena (Fig. 9), and we analyzed its effectiveness in theory and simulation [27].…”

Section: Golden Ratio and Metallic Ratio Samplingmentioning

confidence: 99%

How the Author's Group Came Up with Ideas in Analog/Mixed-Signal Circuit and System Area

KOBAYASHI

2024

IEICE Trans. Fundamentals

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This article reviews the author's group research achievements in analog/mixed-signal circuit and system area with introduction of how they came up with the ideas. Analog/mixed-signal circuits and systems have to be designed as well-balanced in many aspects, and coming up ideas needs some experiences and discussions with researchers. It is also heavily dependent on researchers. Here, the author's group own experiences are presented as well as their research motivations.

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“…The acceleration coefficient kAEQ of the equivalent sampling frequency compared to the real sampling frequency fSAMP is according to (5) (5) In MCUs, all periodic events are usually derived from the system clock fSYS. The fSAMP and fPWM are also derived by dividing by the coefficient M and N, respectively, using timers.…”

Section: Fig 5 Signal Digitization Timing In Etsmentioning

confidence: 99%

Increasing of Sampling Rate of Internal ADC in Microcontrollers by Equivalent-Time Sampling

Svatoš¹,

Fischer²,

Holub³

2022

Proceedings of the 25th IMEKO TC4 International Symposium and 23rd International Workshop on ADC and DAC Modelling and Testing

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The paper describes the Equivalent-Time Sampling (ETS) in Software-Defined Instruments (SDI) -typically oscilloscopes. It introduces a possible solution of the microcontrollers drawback caused by the maximal sampling frequency and its limitations in digitizing quick transient responses. The principle of ETS used in microcontrollers is explained, and the jitter effect is taken into account. Analog-to-digital converter input model and real properties of softwaredefined oscilloscope from ETS point of view are introduced and explained. In the system for circuit behavior analysis as a step response, where a microcontroller with internal peripherals (pulse-width modulation and analog-to-digital converter) is used for a test signal generation and data digitization, the use of ETS may increase the equivalent sampling rate of the internal analog-to-digital converter up to tens of MSa/s.

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Highly Efficient Waveform Acquisition Condition in Equivalent-Time Sampling System

Cited by 18 publications

References 3 publications

Consideration on Input Signal for ADC Histogram Test in Short Time

Consideration on Input Signal for ADC Histogram Test in Short Time

How the Author's Group Came Up with Ideas in Analog/Mixed-Signal Circuit and System Area

Increasing of Sampling Rate of Internal ADC in Microcontrollers by Equivalent-Time Sampling

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