Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Time interweaving stream-line type analog-digital converter structure

An analog-to-digital converter and pipeline-type technology, applied in the direction of analog-to-digital converters, can solve the problems of large hardware overhead, increased chip power consumption, increased area, etc., to improve precision performance, simplify complexity, and reduce chip area and the effect of power dissipation

Active Publication Date: 2012-11-07
FUDAN UNIV
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Doing so will bring a lot of hardware overhead, which will increase the area of ​​the entire analog-to-digital converter chip and increase the power consumption of the chip.

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
  • Time interweaving stream-line type analog-digital converter structure
  • Time interweaving stream-line type analog-digital converter structure
  • Time interweaving stream-line type analog-digital converter structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The working principle of the time-interleaved pipelined ADC structure using the front-end shared sub-ADC proposed in the present invention will be described below.

[0026] After the analog signal is input to the time-interleaved pipelined ADC, it first enters the front-end shared sub-ADC 1 (such as Figure 4 shown), the front-end shared sub-ADC 1 to time-interleave the ADC sampling frequency f s Performs analog-to-digital conversion on analog signals. The digital signal obtained after conversion is input to the demultiplexer 2 together with the input analog signal. demultiplexer 2 with f s The frequency of the analog signal and the corresponding digital signal obtained by the front-end shared sub-ADC 1 are sent to the N channel AD converters 3 in sequence, and then the N channel AD converters 3 will work at f s / N operating frequency.

[0027]Channel A / D converters are divided into two types: reference channel A / D converters and calibration channel A / D converters. ...

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

The invention belongs to the technical field of integrated circuits and particularly relates to a time interweaving stream-line type analog-digital converter structure which adopts a share front terminal analog-digital converter. A front end sampling maintaining amplification circuit of a channel analog-digital converter of a stream-line structure is removed. Sampling time errors in different types exist in both the stream-line structure analog-digital converter omitting the sampling maintaining amplification circuit and the time interweaving structure analog-digital converter. Compared with the existing method and structure, the structure of the share front terminal analog-digital converter is adopted at the front end of the stream-line type channel analog-digital converter omitting the sampling maintaining amplifier. The structure unifies sampling time errors in the two types, simplifies complexity of sampling time error calibration algorithm and circuit structure to the largest extent and finally effectively reduces power consumption and area of chips.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to a time-interleaved pipelined analog-to-digital converter structure using front-end shared sub-analog-to-digital converters. Background technique [0002] With the development of science and technology, electronic systems have gradually increased the requirements for the accuracy and speed of analog-to-digital converters. A / D converters with various basic structures have encountered bottlenecks in performance improvement under the constraints of technology, and a balance and trade-off must be made in terms of speed and accuracy. The time-interleaved A / D converter architecture uses parallel sampling of N-channel A / D converters with limited speed, and the time-interleaved A / D converter increases its conversion speed to a single-channel A / D converter while inheriting the accuracy of each channel's A / D converter. N times that of the digital converter. (Such a...

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
IPC IPC(8): H03M1/12
Inventor 任俊彦徐佳靓陈迟晓蔡盛畅张逸文叶凡许俊李宁
Owner FUDAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com