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SparkFun Analog MEMS Microphone Breakout - SPH8878LR5H-1

The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the SPH8878LR5H-1 analog microphone from Knowles. 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 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.

  • Supply Voltage: 2.3-3.6V
  • Average Current Consumption: 265µA
  • Frequency Range: 7Hz-36kHz
  • Signal-to-Noise Ratio: 66dBV/Pa
  • Sensitivity: ~44dBV/Pa (Single-Ended Mode)
  • -3dB Roll Off at 7Hz / +3dB Flatness at 36kHz
  • Acoustic Overload Point: 134dB SPL
  • OPA344 provides 600Ω output impedance

SparkFun Analog MEMS Microphone Breakout - SPH8878LR5H-1 Product Help and Resources

Analog MEMS Microphone Breakout - SPH8878LR5H-1 Hookup Guide

March 17, 2022

Get started with sound monitoring using the SparkFun analog MEMS microphone breakout board with Arduino!

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2 Programming

Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Customer Reviews

4.5 out of 5

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Super easy

This was almost too easy, works perfect, paired with a teensy 4.0

Works well

I use this microphone to detect motor vibratrions, the do an FFT and determine the highest componentes of the spectrum. It is sensitive enough for what I need.