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

Switch control circuit, delta-sigma modulation circuit, delta-sigma modulation type AD convertor

A switching control circuit, switching technology, applied in the direction of analog-to-digital converter, analog-to-digital converter, delta modulation, etc., can solve the problems of distortion rate deterioration, charge residual and other problems

Inactive Publication Date: 2010-12-01
SANYO ELECTRIC CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since charges remain in the capacitor 112 constituting the integrator used in the ΔΣ modulation AD converter, the distortion rate deteriorates as shown in FIG. 13 .

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
  • Switch control circuit, delta-sigma modulation circuit, delta-sigma modulation type AD convertor
  • Switch control circuit, delta-sigma modulation circuit, delta-sigma modulation type AD convertor
  • Switch control circuit, delta-sigma modulation circuit, delta-sigma modulation type AD convertor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

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 inventio is to suppress degradation in distortion rate of a Delta Sigma modulation AD converter by enhancing precision in integration of an integrator and precision in modulation of a Delta Sigma modulation circuit. In the switch control circuit for turning the second and third switches and the first and fourth switches of an integrator constituted of a switched capacitor having first throughfourth switches on / off complementarily, when the first and fourth switches are turned off and the second and third switches are turned on, the second switch is turned on before the fourth switch is turned on.

Description

Switch control circuit, ΔΣ modulation circuit and ΔΣ modulation AD converter technical field The invention relates to a switch control circuit, a ΔΣ modulation circuit and a ΔΣ modulation AD converter. Background technique As an AD converter used in audio equipment and the like, an AD converter using a ΔΣ modulation circuit is known (for example, Patent Document 1). The ΔΣ modulation circuit used in such an AD converter is realized by using an integrator that integrates an input analog signal and outputs it, a quantizer that converts the integrated analog signal into a digital signal and outputs it, etc. of. Also, the integrator can be configured by combining a switched capacitor and an operational amplifier. FIG. 9 shows a configuration example of an integrator using a switched capacitor and an operational amplifier. The integrator 100 includes an operational amplifier 110 , a capacitor 111 for integration, switches SW11 to SW14 , and a switched capacitor including 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
Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/18H03M1/08H03M3/02
CPCH03M3/356H03M3/43H03M3/456
Inventor 大西章甲
Owner SANYO ELECTRIC CO LTD
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