Electret microphone and OPA344 amplifier module - SparkFun BOB-12758*

Module with microphone and operational amplifier. The output signal is amplified 100 times so the system can be connected directly to the analog inputs of microcontrollers.

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In stock, shipping 24 hours!

Price 33,90 zł


Module with electret microphone elektretowym and operational amplifier. Thanks to the applied system amp (OPA344), the voltage signal of the microphone is amplified 100-times. This allows for the direct connection of the module to the input pins of the analog-to-digital converter (e.g. analog inputs of the Arduino). The system is powered with the voltage ranging from 2.7 V to 5.5 V.



  • Supply voltage: from 2.7 V to 5.5 V
  • Current consumption: max 0.5 mA
  • Frequency range: 100 Hz to 10 000 Hz
  • The set does not contain goldpin strap, it can be purchased separately

  • Module dimensions : 17 x 11 x 8 mm

Connection method

Power should be connected between the pins of VCC (2.7 V to 5.5 V) and GND (ground). AUD is an output of amplified analog signal. It must be connected to the input pins of the analog-to-digital converter (e.g. analog inputs of the Arduino) using wires or using breadboard. Pins are the solder fields, for soldering the goldpin connectors (2.54 mm pitch).



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The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.