All-digital A/D converter TAD with high-resolution and low-power for sensor/RF digitization

Watanabe, Toshio; Terasawa, Tomohito

doi:10.1007/s10470-013-0189-5

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…Although low-frequency noises in Fig. 5(a) in high-resolution conversion using 1.35μV/LSB dominate the SNR, they can be removed by using digital CDS methods with reference values in sensor applications as described in [5]. And furthermore, voltage resolutions of TAD can be so high that TAD with a small V in span (e.g., 100mV pp ) even for high-resolution conversion never requires any complicated pre-conditioning circuits [6], such as an LNA, VGA, LPF, etc., for achieving very-lowpower sensor ASICs.…”

Section: Ramp-input Adc Measured Resultsmentioning

confidence: 99%

“…Others are image sensing systems such as touchsensing devices [13] and range sensing (lidar) systems [14], for example. In addition, it makes a lot of sense to define the value for one LSB because it translates fairly the amount of information that can be carried within a voltage range in the digital sensors [3], [6], [12], [14] with TAD as explained in [5].…”

Section: Discussion About Inl Correctionmentioning

confidence: 99%

“…Under these circumstances, alldigital ADCs based on time-domain processing [3] should be considered as one of the promising solutions for ADC to achieve high resolution and low power simultaneously. In a much broader sense, digital circuit using time-domain processing has potential to replace conventional methods as analog interfaces such as ADCs, TDCs and mixers [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, since there are few delay units in the RDL, a small-sized buffer can be used to avoid loading the signal (V in ) as an impedance converter, if necessary. This is because both high-and lowfrequency noise due to the buffer can be removed by TAD-filter effect [3] and digital post-processing [digital CDS (correlated double sampling) method] as explained in [5], [7], respectively.…”

Section: Introductionmentioning

confidence: 99%

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All-digital 0.016mm<sup>2</sup> reconfigurable sensor-ADC using 4CKES-TAD in 65nm digital CMOS

Watanabe

Miyahara

et al. 2014

2014 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS)

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An all-digital reconfigurable (10-to-16-bit) sensor ADC based on TAD (Time A/D converter) is completely digital, using a ring-delay-line RDL driven by an input voltage V in as its power supply. This method realized 16.2bit/100ksps/37.5μW from 0.6V supply without any static current using a 0.016mm 2 prototype 4CKES (4-clock-edge-shift) TAD in a 65nm digital CMOS. Resolutions can be controlled by setting its conversion time T cv . A 13.8bit/1Msps/75.4μW or 10.5bit/10Msps/93.2μW operation is also experimentally confirmed using 0.6V supply. Finally, correction of nonlinearity characteristics has been discussed using differential-setup processing method. I.978-1-4799-4242-8/14/$31.00 c 2014 IEEE

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Section: Ramp-input Adc Measured Resultsmentioning

confidence: 99%

Section: Discussion About Inl Correctionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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All-digital 0.016mm<sup>2</sup> reconfigurable sensor-ADC using 4CKES-TAD in 65nm digital CMOS

Watanabe

Miyahara

et al. 2014

2014 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS)

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“…Digital frequency meter can not only solve the problem of low efficiency of analog circuit information processing and transmission, but also improve the accuracy of frequency measurement [2] . Digital frequency meter is the use of digital circuits can be achieved on the cyclical changes in the signal frequency measurement of the instrument can be used to measure sine wave, rectangular wave, triangular wave and sharp pulse and other periodic signal frequency [3] .…”

mentioning

confidence: 99%

Design and Implementation of High Precision Digital Frequency Meter Based on C8051F020 Microcontroller

Su¹,

Aiguo²,

Qin³

et al. 2017

Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC

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Frequency, is to describe the frequency of periodic movement of the physical quantity, easy to transmit, anti-interference ability, many engineering measurements are related to frequency, such as sound frequency, mechanical vibration, measurement speed [1] .With the advance of the digital process, the traditional frequency-based circuit and timing circuit design of the frequency meter in the speed, accuracy and other aspects of the trend gradually, but was based on ultra-large-scale integrated circuit technology developed from the digital frequency meter to replace it on a large scale. Digital frequency meter can not only solve the problem of low efficiency of analog circuit information processing and transmission, but also improve the accuracy of frequency measurement [2] . Digital frequency meter is the use of digital circuits can be achieved on the cyclical changes in the signal frequency measurement of the instrument can be used to measure sine wave, rectangular wave, triangular wave and sharp pulse and other periodic signal frequency [3] .At present, there are many ways to measure the frequency of the frequency meter. Commonly used methods include interpolation method, cursor method, precision frequency measurement method, frequency difference multiplication method, phase comparison method, direct frequency measurement method and direct measurement method. Interpolation method and cursor method for analog circuits, the circuit design is complex, poor stability [4][5] . Frequency difference method is mainly used for frequency stability measurement, anti-jamming performance is poor [6] . Equal precision frequency measurement method is very high accuracy, fast operation, but most of its use of the chip is a programmable logic device, programming more complex [7] . Phase comparison method is mainly used for frequency accuracy and stability measurement, measurement accuracy by the hardware equipment constraints [8] . Based on the single-chip digital frequency meter commonly used frequency measurement method has direct frequency measurement method and direct measurement method, the direct measurement of the frequency range is limited, can only measure low frequency [9] . Direct frequency measurement is also limited by the frequency range, can only measure high frequency [10] . This paper designs a digital frequency meter based on C8051F020 single chip microcomputer. The frequency measurement method of digital frequency meter adopts the direct frequency measurement method and the direct

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Design of PPS Self-Calibration High-Precision Frequency Meter Based on STM32 Single Chip Microcomputer

Kong,

Wang,

Wei

et al. 2023

2023 3rd International Conference on Electronic Information Engineering and Computer (EIECT)

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All-digital A/D converter TAD with high-resolution and low-power for sensor/RF digitization

Cited by 10 publications

References 13 publications

All-digital 0.016mm<sup>2</sup> reconfigurable sensor-ADC using 4CKES-TAD in 65nm digital CMOS

All-digital 0.016mm<sup>2</sup> reconfigurable sensor-ADC using 4CKES-TAD in 65nm digital CMOS

Design and Implementation of High Precision Digital Frequency Meter Based on C8051F020 Microcontroller

Design of PPS Self-Calibration High-Precision Frequency Meter Based on STM32 Single Chip Microcomputer

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