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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.)

Indexed by:

CPCI-S EI Scopus SCIE

Abstract:

A 10-b, 100-MS/s pipelined analog-to-digital converter (ADC) without dedicated front-end sample-and-hold amplifier (SHA) converts from dc to the 12th Nyquist band with in situ, mostly digital background calibration for the clock skew in the 3.5-b front-end stage. The skew information is extracted from the first-stage residue output with two comparators sensing out-of-range errors; a gradient-descent algorithm is used to adaptively adjust the timing of the front-end sub-ADC to synchronize with that of the sample-and-hold (S/H) in the multiplying digital-to-analog converter (MDAC). The prototype ADC, implemented in a 90-nm CMOS process, digitizes inputs up to 610 MHz without skew errors in experiments; in contrast, the same ADC fails at 130 MHz with calibration disabled (with the default sub-ADC sample point set at the midpoint of the delay range). The prototype with calibration circuits fully integrated on chip consumes 12.2 mW and occupies 0.26-mm silicon area, while the calibration circuits dissipate 0.9 mW and occupy 0.01 mm. A 71-dB spurious-free dynamic range (SFDR) and a 55-dB signal-to-noise and distortion ratio (SNDR) were measured with a 20-MHz sine-wave input, and a larger than 55-dB SFDR was measured in the 10th Nyquist band.

Keyword:

Multibit pipeline architecture SHA-less sample-and-hold amplifier (SHA) skew calibration sampling clock skew pipelined analog-to-digital converter (ADC)

Author Community:

  • [ 1 ] [Huang, Pingli]Univ Texas Dallas, Texas Analog Ctr Excellence TxACE, Richardson, TX 75080 USA
  • [ 2 ] [Lee, Seung-Chul]Univ Texas Dallas, Texas Analog Ctr Excellence TxACE, Richardson, TX 75080 USA
  • [ 3 ] [Chiu, Yun]Univ Texas Dallas, Texas Analog Ctr Excellence TxACE, Richardson, TX 75080 USA
  • [ 4 ] [Hsien, Szukang]Texas Instruments Inc, Sunnyvale, CA 94089 USA
  • [ 5 ] [Lu, Victor]Univ Illinois, Dept Comp Sci, Urbana, IL 61801 USA
  • [ 6 ] [Wan, Peiyuan]Beijing Univ Technol, Beijing 10022, Peoples R China
  • [ 7 ] [Liu, Wenbo]Broadcom Corp, Irvine, CA 92619 USA
  • [ 8 ] [Chen, Bo-Wei]Ind Technol Res Inst, Hsinchu 310, Taiwan
  • [ 9 ] [Lee, Yung-Pin]Ind Technol Res Inst, Hsinchu 310, Taiwan
  • [ 10 ] [Chen, Wen-Tsao]Ind Technol Res Inst, Hsinchu 310, Taiwan
  • [ 11 ] [Yang, Tzu-Yi]Ind Technol Res Inst, Hsinchu 310, Taiwan
  • [ 12 ] [Ma, Gin-Kou]Ind Technol Res Inst, Hsinchu 310, Taiwan

Reprint Author's Address:

  • [Huang, Pingli]Univ Texas Dallas, Texas Analog Ctr Excellence TxACE, Richardson, TX 75080 USA

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Source :

IEEE JOURNAL OF SOLID-STATE CIRCUITS

ISSN: 0018-9200

Year: 2011

Issue: 8

Volume: 46

Page: 1893-1903

5 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 32

SCOPUS Cited Count: 39

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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