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SparkFun MEMS麥克風突圍 - INMP401（ADMP401）
原名
SparkFun MEMS Microphone Breakout - INMP401 (ADMP401)
貨號
BOB-09868
特價
328
資料來源：https://www.sparkfun.com/products/9868
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
Features:
- -3dB roll off at 100Hz and 15kHz
- 1.5 to 3.3VDC supply voltage
- Should comfortably output 40mW
- SNR of -62dBA
Documents:
- Schematic
- Eagle Files
- Hookup Guide
- Datasheet (ADMP401)
- GitHub
Videos
這個微小的接口板採用了ADMP401 MEMS麥克風。其中一個這種突破和麥克風的關鍵優勢是底部端口輸入。這意味著麥克風的輸入可以適合對項目的外殼齊平。另外，您將不必處理試圖焊接麥克風的古怪的足跡。 Wootness！
在突破的放大器67和超過滿足麥克風的帶寬要求的增益。放大器的輸出澳元將浮在一半的Vcc時沒有聲音正在回升。該放大器產生的峰峰值輸出約為200mV，當話筒保持一定的距離，並保持正常對話的音量被說成。所以AUD輸出可以很容易地連接到微的ADC。
特徵：
- -3dB在100Hz和15kHz的滾降
- 1.5〜3.3VDC電源電壓
- 應該舒舒服服輸出為40mW
- -62dBA的SNR
文件：
