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Author:

Huang, Pingli (Huang, Pingli.) | Hsien, Szukang (Hsien, Szukang.) | Lu, Victor (Lu, Victor.) | Wan, Peiyuan (Wan, Peiyuan.) | Lee, Seung-Chul (Lee, Seung-Chul.) | Liu, Wenbo (Liu, Wenbo.) | Chen, Bo-Wei (Chen, Bo-Wei.) | Lee, Yung-Pin (Lee, Yung-Pin.) | Chen, Wen-Tsao (Chen, Wen-Tsao.) | Yang, Tzu-Yi (Yang, Tzu-Yi.) | Ma, Gin-Kou (Ma, Gin-Kou.) | Chiu, Yun (Chiu, Yun.)

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EI Scopus

Abstract:

Conversion from dc to the 10th Nyquist band is enabled in a SHA-less, 10-b, 100-MS/s pipelined ADC by digitally calibrating the clock skew in the 3.5-b front-end stage. Architectural redundancy of pipelined ADC is exploited to extract skew information from the first-stage residue output with two out-of-range comparators and some simple digital logic; a gradient-descent algorithm is used to adaptively adjust the timing of the front-end sub-ADC to synchronize with that of the S/H. The 90-nm prototype consumes 12.2 mW and digitizes inputs up to 480 MHz (limited by testing equipment) without skew errors in experiments, whereas the same ADC fails at 130 MHz when the calibration is disabled. The measured SFDR is 71 dB at 20 MHz and 55 dB at 480 MHz. © 2010 IEEE.

Keyword:

Electric clocks Analog to digital conversion Gradient methods Calibration Pipelines

Author Community:

  • [ 1 ] [Huang, Pingli]University of Illinois at Urbana-Champaign, Urbana, IL, United States
  • [ 2 ] [Hsien, Szukang]Texas Instruments, Sunnyvale, CA, United States
  • [ 3 ] [Lu, Victor]University of Illinois at Urbana-Champaign, Urbana, IL, United States
  • [ 4 ] [Wan, Peiyuan]University of Illinois at Urbana-Champaign, Urbana, IL, United States
  • [ 5 ] [Wan, Peiyuan]Beijing University of Technology, Beijing, China
  • [ 6 ] [Lee, Seung-Chul]University of Illinois at Urbana-Champaign, Urbana, IL, United States
  • [ 7 ] [Liu, Wenbo]University of Illinois at Urbana-Champaign, Urbana, IL, United States
  • [ 8 ] [Chen, Bo-Wei]Industrial Technology Research Institute, Hsinchu, Taiwan
  • [ 9 ] [Lee, Yung-Pin]Industrial Technology Research Institute, Hsinchu, Taiwan
  • [ 10 ] [Chen, Wen-Tsao]Industrial Technology Research Institute, Hsinchu, Taiwan
  • [ 11 ] [Yang, Tzu-Yi]Industrial Technology Research Institute, Hsinchu, Taiwan
  • [ 12 ] [Ma, Gin-Kou]Industrial Technology Research Institute, Hsinchu, Taiwan
  • [ 13 ] [Chiu, Yun]University of Illinois at Urbana-Champaign, Urbana, IL, United States

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ISSN: 0886-5930

Year: 2010

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 6

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 16

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