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Sensor microphone output protection circuit and sensor microphone

A technology of output protection and output circuit, which is applied in the field of microphones, can solve problems such as abnormal audio signals, unpleasant hearing for users, insufficient battery voltage, etc., and achieve the effect of ensuring stability and reliability

Pending Publication Date: 2022-05-31
GOERTEK MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional sensor microphone is powered on with insufficient voltage or when the battery decays and is dead, multiple internal modules will fail, resulting in abnormal output audio signals, causing users to hear unpleasant sounds

Method used

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  • Sensor microphone output protection circuit and sensor microphone
  • Sensor microphone output protection circuit and sensor microphone
  • Sensor microphone output protection circuit and sensor microphone

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Embodiment Construction

[0043] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at leas...

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PUM

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Abstract

The invention provides a sensor microphone output protection circuit and a sensor microphone. Wherein the sensor microphone comprises an amplification output circuit, a power supply end and an audio output end, the amplification output circuit is electrically connected with the power supply end and the audio output end, the sensor microphone output protection circuit comprises a voltage detection module, a low-power trigger module and a switch module, and the detection end of the voltage detection module is connected with the power supply end. The output end of the voltage detection module is electrically connected with the controlled end of the low-power trigger module, and the controlled end of the switch module is electrically connected with the low-power trigger module. The invention aims to eliminate the abnormal audio signal output by the sensor microphone when the voltage is not enough or the battery is attenuated and is out of power when the sensor microphone is powered on.

Description

technical field [0001] The invention relates to the technical field of microphones, in particular to a sensor microphone output protection circuit and a sensor microphone. Background technique [0002] With the expansion of consumer markets such as modern smartphones, TWS smart earphones and smart homes, the demand for sensor microphones (MEMS–Micro Electro Mechanical System) has increased relatively significantly. However, when the voltage of the traditional sensor microphone is insufficient when it is powered on or the battery is attenuated and dead, multiple internal modules will fail, resulting in abnormal output audio signals, causing users to hear unpleasant sounds. Contents of the invention [0003] The main purpose of the present invention is to provide a sensor microphone output protection circuit and a sensor microphone, aiming at eliminating the abnormal audio signal output by the sensor microphone when the voltage of the sensor microphone is insufficient or the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00H02H3/24
CPCH04R3/00H02H3/24Y02D30/70
Inventor 陈章益
Owner GOERTEK MICROELECTRONICS CO LTD
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