Two-line MEMS microphone

A microphone and ASIC chip technology, applied in the field of two-wire MEMS microphones, can solve the problems of limiting the miniaturization of earphones, increasing procurement costs, and large volume, and achieving the effects of simple structure, small volume, and cost reduction

Inactive Publication Date: 2014-08-27
SHANDONG GETTOP ACOUSTIC
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above technical solution, the microphone itself has three interfaces, and three additional off-chip resistance capacitors (R1, R2, and uF-level large capacitor C) are requi

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
  • Two-line MEMS microphone
  • Two-line MEMS microphone
  • Two-line MEMS microphone

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] The present invention will be further explained below in conjunction with the drawings. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0022] See image 3 The two-wire MEMS microphone provided by the present invention is an element with two ends: a first connecting end M+ end and a second connecting end M- end. The MEMS microphone chip and the two-wire MEMS microphone dedicated ASIC chip are packaged on the same PCB substrate. The MEMS microphone chip is connected to the ASIC chip. The M+ and M- terminals of the ASIC chip are led out as the M+ and M- terminals of the entire two-wire ...

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 discloses a two-line MEMS microphone which comprises an MEMS microphone chip and an ASIC chip. The MEMS microphone chip is connected with the ASIC chip, the ASIC chip is provided with a first connection end (M+) and a second connection end (M-), and the ASIC chip receives sound signals picked by the MEMS microphone chip and converts the sound signals into current signals from the first connection end to the second connection end. The two-line MEMS microphone is concise in structure and small in size and facilitates miniaturization development of line control portions of an earphone and cost is reduced.

Description

technical field [0001] The invention relates to a two-wire MEMS microphone. Background technique [0002] MEMS microphone is a kind of electric energy sound transducer made by micromachining technology, which has the characteristics of small size, good frequency response characteristics and low noise. With the miniaturization and thinning of electronic devices, MEMS microphones are more and more widely used in these devices. [0003] At present, the mainstream 3.5mm earphones on the market have two types of interfaces, three-pole earphones and four-pole earphones. The 3.5mm three-pole earphone includes GND, left channel output, and right channel output three poles. The four-pole earphone refers to GND, left channel output, and right channel output three poles, as well as the MIC pole for microphone input. With the development of technology and the popularity of smart phones, quadrupole earphones that support microphone input have become mainstream products in the earphon...

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): H04R19/04
Inventor 万景明刘志永
Owner SHANDONG GETTOP ACOUSTIC
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