Title:
ERROR SHAPING CIRCUIT OF ANALOG-TO-DIGITAL CONVERTER, AND SUCCESSIVE-APPROXIMATION ANALOG-TO-DIGITAL CONVERTER
Document Type and Number:
WIPO Patent Application WO/2020/228467
Kind Code:
A1
Abstract:
An error shaping circuit of an analog-to-digital converter, and a successive-approximation analog-to-digital converter, wherein the error shaping circuit comprises a distributed capacitor array, a data weighted averaging module (40), a mismatch error shaping module (50), a control logic generation circuit (30), a digital filter, and an extractor. The distributed capacitor array comprises two symmetrically disposed capacitor array units, and each capacitor array unit comprises a high-level first sub-capacitor array (10) and a low-level second sub-capacitor array (20). The data weighted averaging module (40) eliminates the correlation between the first sub-capacitor array (10) and an input signal. The mismatch error shaping module (50) eliminates the correlation between the second sub-capacitor array (20) and an input signal.
Inventors:
ALPMAN ERKAN (US)
GUO XIAOFENG (CN)
DUSTER JON SWEAT (US)
TAN YULIN (CN)
ZHANG NING (CN)
FENG HAIGANG (CN)
GUO XIAOFENG (CN)
DUSTER JON SWEAT (US)
TAN YULIN (CN)
ZHANG NING (CN)
FENG HAIGANG (CN)
Application Number:
PCT/CN2020/084853
Publication Date:
November 19, 2020
Filing Date:
April 15, 2020
Export Citation:
Assignee:
RADIAWAVE TECH CO LTD (CN)
International Classes:
H03M1/10; H03M1/08; H03M1/38
Foreign References:
| CN110113051A | 2019-08-09 | |||
| CN107565969A | 2018-01-09 | |||
| CN107135000A | 2017-09-05 | |||
| CN101807923A | 2010-08-18 | |||
| CN109586722A | 2019-04-05 | |||
| US9780802B1 | 2017-10-03 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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