Analog/digital conversion using successive approximation and redundant weighting

A digital converter and successive approximation technology, applied in the field of digital/analog conversion and analog/digital converter, can solve problems such as poor matching, complex self-calibration of weights, etc., achieve the effect of simple circuit configuration and increased operating clock rate

Inactive Publication Date: 2008-01-02
LANTIQ DEUT GBMH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Non-binary networks have their disadvantages compared to binary networks: with non-binary networks, the individual weights in principle present a poorer match, and any self-calibration of the weights is complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Analog/digital conversion using successive approximation and redundant weighting
  • Analog/digital conversion using successive approximation and redundant weighting
  • Analog/digital conversion using successive approximation and redundant weighting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] FIG. 1 shows a circuit diagram of a conventional analog / digital converter according to the charge redistribution method. For the configuration and operation of this analog / digital converter, refer to the description in the introduction of this specification.

[0034]Figure 2 shows an illustrative embodiment of a binary network according to the invention as part of an analog / digital converter according to the invention. A network for 8-bit analog / digital converters (N=8) is chosen as an example. In this exemplary embodiment, N=8 binary weights G1 to G8 are provided and according to the invention an additional redundant weight G5' is provided. In the present device, the weight G1 corresponds to the LSB and the weight G8 corresponds to the MSB.

[0035] The binary network is implemented by binary weighted capacitors C1a / b to C8a / b and C5a' / b', the normalized capacitance values ​​specifying the weight values ​​for each weight. As a further alternative, resistive methods ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Illustrative binary networks for analog/digital converters are described. For instance, an analog/digital converter may operate in accordance with a principle of successive approximation, and may include a plurality of N+1 circuit nodes each representing one of N binary weights and M>=1 redundant binary weights, wherein each binary weight corresponds to a different position of a redundant binary code formed as part of the approximation. Illustrative methods of operation of the binary network and/or the analog/digital converter are also described.

Description

technical field [0001] The invention relates to a binary network for digital / analog conversion of an analog / digital converter operating on the principle of the successive approximation method. The invention also relates to an analog / digital converter comprising a corresponding binary network and a corresponding method involving digital / analog conversion according to the principle of the successive approximation method. Background technique [0002] The functional principle of the successive approximation method represents an important method of operation for analog / digital converters. In this method, the required numerical value is determined in an iterative search process. For this purpose, the analog input voltage to be converted is compared with an analog threshold voltage by a comparator. The digital input word of the digital / analog converter is generated by an approximation register, also called SAR (Successive Approximation Register), connected downstream of the comp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/80H03M1/38
CPCH03M1/069H03M1/468H03M1/804
Inventor D·德拉克塞尔梅尔
Owner LANTIQ DEUT GBMH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap