Listen to this good news - we now have a breakout board for a super tiny MEMS microphone. Just like 'classic' electret microphones, MEMS mics can detect sound and convert it to voltage, but they don't need a bias resistor or amplifier, its all in one! The SPW2430 is a small, low cost MEMS mic with a range of 100Hz - 10KHz, good for just about all general audio recording/detection.

This breakout is best used for projects such as voice changers, audio recording/sampling, and audio-reactive projects that use FFT. To keep the breakout small and simple, we only added a 3V voltage regulator (the microphone requires 3.3V DC) and filter capacitors. No additional opamp is included, the output peak-to-peak voltage has a 0.67V DC bias and about 100mVpp (peak-to-peak) when talking near the microphone, which is good for attaching to something that expects 'line level' input without clipping. The peak-to-peak can be as high as 1Vpp if there's a very loud sound. If you are If you need a microphone with adjustable gain or auto-gain control, check out our mic+amplifier options. If you need a higher peak-to-peak, a rail-to-rail op-amp and some resistors can get you boosted up!

Using it is simple: connect GND to ground, Vin to 3.3-5VDC. For the best performance, use the "quietest" supply available (on an Arduino, this would be the 3.3V supply). The audio waveform will come out of the DC pin. The output will have a DC bias of 0.67V so when its perfectly quiet that's what you'll read, there's a little drift. If the audio equipment you're using requires AC coupled audio, you can grab the signal out of the AC pin, which has a 10uF capacitor in series.

The output pin is not designed to drive speakers or anything but the smallest in-ear headphones - you'll need an audio amplifier (such as our 3.7W stereo amp) if you want to connect the amp directly to speakers. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the DC pin directly to the microcontroller ADC pin.

Technical Details

  • Weight: 0.9g
  • Product Dimensions: 15.8mm x 14.1mm x 2.9mm / 0.6" x 0.6" x 0.1"

Microphone Silicon Mems Breakout - SPW2430 [2716]

  • Brand: Adafruit
  • Product Code: ADA-2716
  • Reward Points: 5
  • Availability: 2
  • £6.40

  • Ex Tax: £5.33
  • Price in reward points: 100

Electret Microphone Amplifier - MAX4466 with Adjustable Gain [1063]

Electret Microphone Amplifier - MAX4466 with Adjustable Gain [1063]

£7.98

This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on

Qty: 36

Electret Microphone - 20Hz-20KHz Omnidirectional [1064]

Electret Microphone - 20Hz-20KHz Omnidirectional [1064]

£3.36

This is an "omnidirectional" microphone, with -44dB sensitivity, and has 20-20KHz frequency ...

Qty: 4

Electret Wired Miniature Microphone [1935]

Electret Wired Miniature Microphone [1935]

£2.78

With pre-attached 65mm long wires, this wired Electret Microphone is tiny and can be biased with 2V ...

Out Of Stock

Electret Microphone Amplifier - MAX9814 with Auto Gain Control [1713]

Electret Microphone Amplifier - MAX9814 with Auto Gain Control [1713]

£10.49

This well-designed electret microphone amplifier with AGC comes with a 20-20KHz electret microphone ...

Qty: 37

MEMS Microphone Breakout - INMP401 (ADMP401) [BOB09868]

MEMS Microphone Breakout - INMP401 (ADMP401) [BOB09868]

£12.74

Tiny breakout board features the ADMP401 MEMs microphone which can fit flush against the enclosure ...

Qty: 1

Electret Microphone Breakout [BOB-12758]

Electret Microphone Breakout [BOB-12758]

£9.06

This small breakout board couples an Electret microphone (100Hz–10kHz) with a 60x mic preamplifier t ...

Qty: 4