mjOuDU

MEMS microphone

Overview

The MEMS microphone's analog output is amplified into an AC signal after DC bias by an NE5532, with an amplification factor of 11, producing output 1. This output 1 is then filtered through a 1kHz low-pass filter to obtain output 2.
In actual testing, the module's overall current is approximately 4mA under a 3.3V power supply.
Laptop microphone power supply ports have an output current of 40~100uA, so they cannot be used directly. Laptop
testing method: The laptop's USB port is used to power the module via an LDO to 3.3V converter. The microphone input signal interface is directly connected to the microphone module's output pin. (Note: The last two sentences appear to be unrelated and possibly machine-generated text.)

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2026-03-28 08:09:01

Hello...Dad...
There were a lot of people on the bus on my way to work in the morning. Suddenly, a girl next to me said, "Hello... Dad..." Ah... After I answered, I turned around and saw that it was a girl calling h
Hercules DIY 5: Suspicion about interruption
[b]Hercules DIY 5: Doubts about interrupts[/b] According to the plan, this week should be about solving the program. Since my project is an alarm, I think it is best to use pin interrupts, but I have
A low-power mini computer occasionally fails to turn on when plugged in
When I start up a low-power computer, I first insert the Adapter and then press the power button. Why does it sometimes fail to start up? Is it a power problem? Experts, please give me some advice, th
EEWORLD University Hall----ENVI Learning Video (Deng Shubin)
ENVI learning video (Deng Shubin) : https://training.eeworld.com.cn/course/26638ENVI (The Environment for Visualizing Images) is a complete remote sensing image processing platform. The software proce
Printed Circuit Board Design Experience Sharing
For electronic products, printed circuit board design is a necessary design process for it to turn from an electrical schematic into a specific product. The rationality of its design is closely relate
It's a simple program (UART), I don't know where the problem is, please help!
The following code is UART0 operation: receiving characters from the host computer and then forwarding them back. The result is that it can be received, but it is wrong, such as sending 01 and receivi

Datasheet More

Circuits More