Title:
HIGH-PRECISION INCREMENTAL ZOOM ADC ARCHITECTURE
Document Type and Number:
WIPO Patent Application WO/2024/082739
Kind Code:
A1
Abstract:
A high-precision incremental zoom analog-to-digital conversion (ADC) architecture, comprising a fine incremental DSM, a coarse quantization ADC, a residual feedforward module, and an extended counting module. The residual feedforward module is used for reconstructing signal feedforward of a CIFF structure in the fine incremental DSM, and reducing the output swing of an incremental zoom ADC integrator; an input of the residual feedforward module is an analog input VIN of an incremental zoom ADC and an output k of the coarse quantization ADC, and an output of the residual feedforward module is used as a feedforward signal of the CIFF structure of the fine incremental DSM; the extended counting module is used for increasing a signal-to-quantization-noise ratio (SQNR) of the incremental zoom ADC; an input of the extended counting module is an output analog voltage of a last-stage integrator in the fine incremental DSM in an incremental mode in the last period, i.e., an analog quantization error of the incremental DSM under the CIFF structure, and an output of the extended counting module is a digital value of the quantization error of the fine incremental DSM after ADC.
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Inventors:
LIU YUYAN (CN)
TAN NIANXIONG (CN)
HONG JUNJIE (CN)
CHEN PENGPENG (CN)
LIN LING (CN)
TAN NIANXIONG (CN)
HONG JUNJIE (CN)
CHEN PENGPENG (CN)
LIN LING (CN)
Application Number:
PCT/CN2023/108604
Publication Date:
April 25, 2024
Filing Date:
July 21, 2023
Export Citation:
Assignee:
HANGZHOU VANGO TECH INC (CN)
International Classes:
H03M1/12
Attorney, Agent or Firm:
JIANGSU SUNDY LAW FIRM (CN)
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