Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

Dong, Ruoshi; Liu, Zhao; Qin, Jiajun; Zhong, Wentao; Fan, Yichun; Liu, Shubin; An, Q.

doi:10.1007/s41365-021-00863-5

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The pulser was switched on and a positive pulser spectrum was acquired for a peaking time of 3.2 μs.Two more pulse spectra were acquired with a peaking time of 0.8 μs and 8.0 μs.The pulser peak resolution was calculated for each peaking time and compared [13].…”

Section: B Acquiring a Pulse Spectrummentioning

confidence: 99%

Digital Data Acquisition for Gamma-Ray Spectroscopy

2022

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The performance characteristics of the digital pulse processor (DPP) as a low power pulse processor for gamma-ray semiconductor detector were analyzed. The FWHM energy resolution of the germanium detector was obtained as 0.35 and is in proper range of published value. The pulse resolution for peaking time of 0.8 obtained to be 1.16 respectively. A good range was obtained for the residual energy at various energy peaks. This lie between -2.3 KeV and 1.3KeV.The optimum peaking time was obtained at 6 μs where the FWHM goes through a minimum value from the plot of FWHM against peaking time. The dead time plot gave a linear fit for a peaking time of 3.2 μs and a curve at 19.2 μs.

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Section: B Acquiring a Pulse Spectrummentioning

confidence: 99%

Digital Data Acquisition for Gamma-Ray Spectroscopy

2022

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“…Parallel sampling technology has witnessed rapid development over the past few decades, as indicated by various studies [1][2][3].This technique leverages interleaved sampling in either the time or frequency domain to increase the sampling rate and bandwidth. Consequently, it caters to the requirements of fields such as communication, nuclear physics experiments, and electronic measurements, which demand high-speed sampling systems [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The time-interleaved analog-to-digital converter (TIADC), representing a parallel sampling structure, has gradually emerged as a prominent ADC topology [10]. In recent years, a large number of studies have been dedicated to studying the calibration method of mismatch error of TIADC [3,5,[11][12][13], and more studies tend to adopt more efficient background calibration methods to be integrated into ADC chips or FPGAs [11,12]. However, most calibration methods are only suitable for narrowband calibration, assuming that the time mismatch error and gain mismatch error are constant within the wideband.…”

Section: Introductionmentioning

confidence: 99%

An efficient calibration method for digital bandwidth interleaving sampling system

Ma,

Wu,

Jiang

et al. 2023

J. Inst.

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Digital bandwidth interleaving (DBI) is a technique that can simultaneously increase system sampling rate and bandwidth. While DBI can reduce the impact of clock jitter on the dynamic performance of the system compared to time-interleaved sampling systems, achieving dynamic performance comparable to time-interleaved analog-to-digital converters (TIADC) remains challenging due to phase misalignment in crossover bands caused by analog filters and nonlinearity in analog mixers. To address these issues, this paper proposes a method to calibrate DBI sampling systems using PRBS signals. This method involves injecting pseudo-random binary sequence (PRBS) signal into the system input as a background signal and calculating the correlation between the output sampling sequence and the PRBS sequence to obtain the response of each sampling channel. Compared with traditional single tone signal or pulse signal, this method offers a more efficient background calibration method. To verify the effectiveness of this method, this paper designed a hybrid parallel sampling system combining DBI and TIADC with a 20 GSPS sampling rate and 8 GHz bandwidth to evaluate the effectiveness of the calibration method. In the performance test of the sampling system before and after calibration, this calibration method improved the system's Signal-to-Noise and Distortion Ratio (SINAD) by up to 13 dB, Spurious Free Dynamic Range (SFDR) by up to 27 dB, and phase response flatness better than 0.3 radians.

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Performance of digital data acquisition system in gamma-ray spectroscopy

Luo

et al. 2021

NUCL SCI TECH

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Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

Cited by 5 publications

References 16 publications

Digital Data Acquisition for Gamma-Ray Spectroscopy

Digital Data Acquisition for Gamma-Ray Spectroscopy

An efficient calibration method for digital bandwidth interleaving sampling system

Performance of digital data acquisition system in gamma-ray spectroscopy

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