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MAX9814 High Performance Microphone AGC Amplifier Module CMA-4544PF-W 55% OFF MAX9814 High Performance Microphone AGC Amplifier Module CMA-4544PF-W 4,65€ 10,24€ View It
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Top Positive Review for %s on Banggood, Shop best %s with lowest price on Banggood. Browse most helpful positive review for %s before you buy., rc toys, fun sports, fashion, popular electronics
MilanCRO 14/02/2019
Excellent low noise microphone amplifier + electret microphone on it. Power it either with 3.3V or 5V, you may feed directly out to your Arduino ADC input. The output from this preamplifier is about half of the VCC voltage. There is AGC (Automatic Gain Control), but it may be bad if you want use it as YouTube microphone for your computer - while not talking, all background noises are amplified. To disable AGC, short together pins 13 and 14 on the chip, or better to adjacent resistors with designations "222" and "154". This way audio is more silent when not talking close to the microphone. I found also useful pre-amplifier for other things where no need bias resistor, just "raw" analog input. In this case use soldering iron and remove 2.2 kOhm resistor (designation "222"). This way bias voltage will be not present on input pin (just unsolder microphone capsule) and you have really great pre-amplifier for your projects (radio communications, various detectors, and so on). I will provide picture with place where to make short if you want to disable AGC. Next to this spot is resistor "222" which can be also removed together with microphone for use to other purposes as a high quality and low noise pre-amplifier. Bandwidth of this preamp is about 35 kHz.
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  • Banggood Dear MilanCRO,Thank you for placing an order on Banggood and we hope you will enjoy the products you bought.If you have any questions or suggestions, please do not hesitate to contact us at below links: Personal Computer: http://www.banggood.com/Contact-Us_hi111Mobile: https://m.banggood.com/contact_us.html Best regards,Banggood Team

    10/05/2024

  • PINTO Thisis a real review on the characteristics of a product! This is what is useful and not commonly what is found here, which review has nothing. In other words, "everything is ok" and things like that! Thank you, Milan CRO.

    Reply 01/02/2021
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