功能

• Description
• 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 the 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 , 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.
• Get Started with the Analog MEMS Microphone Breakout Guide
• 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