Journal ArticleDOI
Fully Digital Feedforward Background Calibration of Clock Skews for Sub-Sampling TIADCs Using the Polyphase Decomposition
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TLDR
A low-power fully digital clock skew feedforward background calibration technique in sub-sampling Time-Interleaved Analog-to-Digital Converters (TIADCs) that can be implemented on a moderate hardware cost with low power dissipation.Abstract:
This paper presents a low-power fully digital clock skew feedforward background calibration technique in sub-sampling Time-Interleaved Analog-to-Digital Converters (TIADCs). Both estimation and correction algorithms share the common derivative filter, which makes them possible to reduce the chip area. Furthermore, these algorithms use the polyphase filtering technique and do not use adaptive digital synthesis filters. Thus, the proposed calibration can be implemented on a moderate hardware cost with low power dissipation. The adopted feedforward technology eliminates the stability issues encountered with the adaptive technique. The Hardware Description Language (HDL) design of the proposed calibration is synthesized using a 28nm FD-SOI process for a 60dB SNR TIADC clocked at 2.7GHz. The calibration is designed for both baseband and sub-sampling TIADC applications. For sub-sampling TIADCs with the input at the first four Nyquist bands, the synthesized calibration system occupies $0.04\rm {mm}^{2}$ of area and dissipates a total power of 33.2mW. For the baseband TIADC applications, it occupies $0.02\rm {mm}^{2}$ and consumes 15.5mW.read more
Citations
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Journal ArticleDOI
A High-Precision Time Skew Estimation and Correction Technique for Time-Interleaved ADCs
TL;DR: An all-digital background calibration technique for the time skew mismatch in time-interleaved ADCs (TIADCs) and a corresponding filter design method is proposed, which is tailored to meet the target performance and yield.
Journal ArticleDOI
First Order Statistic Based Fast Blind Calibration of Time Skews for Time-Interleaved ADCs
Maowei Yin,Zhongfu Ye +1 more
TL;DR: A full digital background method is proposed in this brief for timing mismatch calibrations of time-interleaved analog-to-digital converters (TIADCs) with wide sense stationary input signals and has the advantages of low complexity and fast convergence over most other conventional methods.
Journal ArticleDOI
A 5 GS/s 29 mW Interleaved SAR ADC With 48.5 dB SNDR Using Digital-Mixing Background Timing-Skew Calibration for Direct Sampling Applications
TL;DR: A 16-channel 5 GS/s time-interleaved (TI) SAR ADC for a direct-sampling receiver that employs a digital-mixing background timing mismatch calibration to compensate for timing-skew errors is presented.
Journal ArticleDOI
An Efficient Spur-Aliasing-Free Spectral Calibration Technique in Time-Interleaved ADCs
TL;DR: Compared to benchmark designs, the new technique involves much less calibration hardware overhead, and calibrates all mismatches with much less time, and addresses the needs from practical TI-ADCs well.
A 10bit 120MSample/s Time-Interleaved Analog-to-Digital Converter with Digital Background Calibration
TL;DR: In this paper, adaptive signal processing is used to correct offset mismatch, gain mismatch, and sample-time error between time-interleaved channels in a 10b 120MSample/s pipelined ADC.
References
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Book
Digital Signal Processing: Principles, Algorithms, and Applications
TL;DR: This paper presents a meta-analysis of the Z-Transform and its application to the Analysis of LTI Systems, and its properties and applications, as well as some of the algorithms used in this analysis.
Book
The scientist and engineer's guide to digital signal processing
TL;DR: Getting Started with DSPs 30: Complex Numbers 31: The Complex Fourier Transform 32: The Laplace Transform 33: The z-Transform Chapter 27 Data Compression / JPEG (Transform Compression)
Journal ArticleDOI
Solving Least Squares Problems.
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