SparkFun ICS-40180 模擬類比 MEMS 麥克風模組

描述

SparkFun ICS-40180 模擬類比 MEMS 麥克風模組

SparkFun ICS-40180 模擬類比 MEMS 麥克風模組 可以輕鬆使用 InvenSense ICS-40180 模擬麥克風。該板具有運算放大器，可將麥克風的輸出提高到可用水平，允許您直接插入微控制器或SparkFun Spectrum Shield 之類的 ADC 中。除了放大信號之外，運算放大器還增加了 1/2 VCC 的偏置電壓。對於距離麥克風幾英尺遠的正常說話聲音等聲源，AUD 輸出信號的峰峰值約為 200mV。另請注意，這款低調麥克風的端口位於底部，因此麥克風可以與外殼的外表面齊平安裝。這個麥克風是全向的，這意味著它可以很好地從各個方向拾取聲源。

特色與規格

• -3dB 在 60Hz 和 19.7kHz 滾降
• 1.5VDC 至 3.6VDC 電源電壓
• 應該舒適地輸出 40mW
• OPA344 提供 600Ω 輸出阻抗
• 65dBA 的信噪比

文件與資源

• 示意圖
• 鷹文件
• 電路板尺寸
• 聯播指南
• 數據表(ICS-40180)
• GitHub 硬件倉庫

SparkFun Analog MEMS Microphone Breakout – ICS-40180

The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the InvenSense ICS-40180 analog microphone. This board features an OpAmp to bring output of the microphone to a usable level, allowing you to plug directly into an ADC on a microcontroller or something like the SparkFun Spectrum Shield.

In addition to amplifying the signal, the OpAmp adds a bias voltage of 1/2 VCC. With sound sources such as a normal speaking voice a few feet away from the microphone, the AUD output signal will be at about 200mV peak-to-peak. Also note, this low profile microphone has its port on the bottom side, so the microphone can be mounted flush to the outer surface of your enclosure. This microphone is omni-directional, which means it does a good job of picking up sound sources from all directions.

Features

• -3dB roll off at 60Hz and 19.7kHz
• 1.5VDC to 3.6VDC supply voltage
• Should comfortably output 40mW
• OPA344 provides 600Ω output impedance
• SNR of 65dBA