MAX4466 Electret Microphone Amplifier with Adjustable Gain Module

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MAX4466 Electret Microphone Amplifier with Adjustable Gain Module is best used for projects such as voice changes; audio recording/sampling, and audio-reactive projects that use FFT.On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x.That’s down to be about 200mVpp (for normal speaking volume about 6″ away) which is good for attaching to something that expects ‘line level’ input without clipping, or up to about 1Vpp, ideal for reading from a microcontroller ADC.The output is rail-to-rail so if the sounds get loud, the output can go up to 5Vpp.

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MAX98357 I2S 3W CLASS D AMPLIFIER INTERFACE AUDIO DECODER MODULE

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MAX98357 I2S 3W CLASS D AMPLIFIER

The MAX98357 Audio Decoder Module is suitable for Raspberry Pi. Accepts digital audio through the I2S interface, converts it to an analog output signal, and amplifies it to allow direct speaker connection.MAX98357 Audio Decoder Module combines an I2S D / A converter with an audio amplifier on one board.Due to the high efficiency of the amplifier, the MAX98357 Audio Decoder Module is particularly suitable for mobile and battery-powered projects.The behavior can be changed using a resistor so that only L or R is output.The MAX98357 Audio Decoder Module is delivered fully assembled and tested.The delivery includes a pin header and a 2-pin terminal, which you can solder on demand.

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