A digital-to-analog converter and a digital power amplifier subsystem

A digital analog, digital power amplifier technology, applied in the direction of digital analog converter, analog/digital conversion, code conversion, etc., can solve problems such as adverse effects on the performance of digital analog converters, and achieve the effect of avoiding adverse effects

Pending Publication Date: 2018-12-28
SHANGHAI AWINIC TECH CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a digital-to-analog converter and a digital power amplifier subsystem, to solve the problem that the size of the switching tube in the digital-to-analog converter can only be designed to be small, which affects the performance of the digital-to-analog converter. The problem of adverse effects

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
  • A digital-to-analog converter and a digital power amplifier subsystem
  • A digital-to-analog converter and a digital power amplifier subsystem
  • A digital-to-analog converter and a digital power amplifier subsystem

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] refer to figure 1 , figure 1A schematic diagram of an application scenario of a digital power amplifier system of a digital-to-analog converter provided by an embodiment of the present invention, which functions to convert the PWM signal processed by the digital module into an analog signal, including two channels VOP and VON, and the VOP channel is used below The digital power amplifier subsystem is taken as an example for illustration.

[0038] In o...

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 provides a digital-to-analog converter and a digital power amplifier subsystem, wherein the clock feed-through effect and the channel charge injection phenomenon generated by the first switch and the second switch of the digital-to-analog converter during the switching process are not loaded in the output signal of the digital-to-analog converter across the first current source and the second current source, so as to avoid the adverse influence of the clock feed-through effect and the channel charge injection phenomenon generated by the first switch and the second switch in the switching process on the output signal of the digital-to-analog converter; further, the size of the first switch and the second switch is not limited, and a switch tube with a larger size can be used as the first switch and the second switch, thereby solving the problem that the first current source and the second current source operate in a linear region due to excessive voltage drop consumed by the first switch and the second switch.

Description

technical field [0001] The present invention relates to the technical field of semiconductor integrated circuits, and more specifically relates to a digital-to-analog converter and a digital power amplifier subsystem. Background technique [0002] The digital power amplifier has the characteristics of low distortion, low noise, large dynamic range, and strong anti-interference ability. Its advantages in sound quality transparency, resolution, background tranquility, and low-frequency shock are greatly superior to traditional analog power amplifiers and class D power amplifiers. With the rapid development of consumer products such as DVD home theater, mini audio system, set-top box, personal computer, LCD TV, flat panel display and mobile phone, especially the emergence of new audio specifications with high sampling frequency such as SACD and DVD Audio, and The evolution of audio system from stereo to multi-channel surround system has accelerated the development of digital po...

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): H03M1/66H03M1/74H03M1/82H04R3/00
CPCH03M1/662H03M1/742H03M1/822H04R3/00
Inventor 杨志飞张海军姚炜周佳宁杜黎明
Owner SHANGHAI AWINIC TECH CO LTD
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