描述
SparkFun MEMS Microphone Breakout – INMP401 (ADMP401) 麥克風感測器模組 美國 SparkFun 原裝進口
這個小巧的接線板採用了ADMP401 MEMS麥克風。這個Breakout和麥克風的關鍵優勢之一是底部移植的輸入。這意味著麥克風的輸入可以與您的項目的外殼齊平。另外，您不必嘗試焊接麥克風的古怪的足跡。放大器放大器的增益為67，超過話筒的帶寬要求。當沒有聲音被拾起時，放大器的AUD輸出將浮動一半Vcc。當話筒握在手臂長度上並且以正常會話音量水平講話時，放大器產生大約200mV的峰 – 峰輸出。所以AUD輸出可以很容易地連接到一個微型ADC。
規格與特色
- -3dB roll off at 100Hz and 15kHz
- 1.5 to 3.3VDC supply voltage
- Should comfortably output 40mW
- SNR of -62dBA
原廠技術文件與範例
This tiny breakout board features the ADMP401 MEMS microphone. One of the key advantages to this breakout and microphone is the bottom ported input. This means the microphone’s input can fit flush against the enclosure of your project. Plus you will not have to deal with trying to solder the microphone’s wacky footprint. Wootness! The amplifier on the breakout has a gain of 67 and more than meets the bandwidth requirements of the mic. The amplifier’s AUD output will float at one half Vcc when no sound is being picked up. The amplifier produces a peak-to-peak output of about 200mV when the microphone is held at arms length and is being talked into at normal conversational volume levels. So the AUD output can easily be connected to the ADC of a micro. Get Started with the ADMP401 Breakout Guide
