This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power supply noise rejection, so this amplifier sounds really good. This breakout is best used for projects such as voice changers, audio recording/sampling, and audio-reactive projects that use FFT.
A small trimmer pot to adjust the gain, lets you 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.
Using it is simple: connect GND to ground, VCC to 2.4-5VDC. 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 OUT pin. The output will have a DC bias of VCC/2 so when its perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). If the audio equipment you're using requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.
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{"id":1621458255944,"title":"Electret Microphone Amplifier - MAX4466 Sound Sensor with Adjustable Gain","handle":"electret-microphone-amplifier-max4466-with-adjustable-gain","description":"\u003cp\u003e\u003cspan\u003eThis fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power supply noise rejection, so this amplifier sounds really good. \u003c\/span\u003eThis breakout is best used for projects such as voice changers, audio recording\/sampling, and audio-reactive projects that use FFT.\u003c\/p\u003e\n\u003cp\u003eA small trimmer pot to adjust the gain, lets you 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003eUsing it is simple: connect GND to ground, VCC to 2.4-5VDC. 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 OUT pin. The output will have a DC bias of VCC\/2 so when its perfectly quiet, the voltage will be a steady VCC\/2 volts (it is DC coupled). If the audio equipment you're using requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e+2.4V to +5.5V Supply Voltage Operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVersions with 5nA Complete Shutdown Available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent Power-Supply Rejection Ratio: 112dB \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent Common-Mode Rejection Ratio: 126dB \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh AVOL: 125dB (RL = 100kΩ) \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRail-to-Rail Outputs \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow 24µA Quiescent Supply Current\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/images_480x480.png?v=1592343573\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/images_1_480x480.png?v=1592343582\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eResources\u003c\/h5\u003e\n\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1020\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDatasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1020\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSample Code\u003c\/a\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/OskL19Mb3eI\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/z7MxxVktykA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e","published_at":"2022-12-06T11:26:21+05:30","created_at":"2019-02-05T15:30:45+05:30","vendor":"ThinkRobotics.in","type":"Sensor","tags":["Adjustable","Adjustable Gain","AMP-MOD","Amplifier","audio","Audio Sensor","BRK-AUDIO","ELC1","Electret Microphone","Gain","MAX4466","Mic","Microphone"],"price":24999,"price_min":24999,"price_max":24999,"available":true,"price_varies":false,"compare_at_price":0,"compare_at_price_min":0,"compare_at_price_max":29000,"compare_at_price_varies":true,"variants":[{"id":27846985678920,"title":"Without Soldered Pin","option1":"Without Soldered Pin","option2":null,"option3":null,"sku":"ELC1020","requires_shipping":true,"taxable":true,"featured_image":{"id":4671535972424,"product_id":1621458255944,"position":2,"created_at":"2019-02-05T15:30:58+05:30","updated_at":"2019-12-31T17:38:02+05:30","alt":"Electret Microphone Amplifier","width":929,"height":674,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-2.jpg?v=1577794082","variant_ids":[27846985678920]},"available":true,"name":"Electret Microphone Amplifier - MAX4466 Sound Sensor with Adjustable Gain - Without Soldered Pin","public_title":"Without Soldered Pin","options":["Without Soldered Pin"],"price":24999,"weight":25,"compare_at_price":0,"inventory_management":"shopify","barcode":"27846985678920","featured_media":{"alt":"Electret Microphone Amplifier","id":821267398728,"position":2,"preview_image":{"aspect_ratio":1.378,"height":674,"width":929,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-2.jpg?v=1577794082"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":15987754631240,"title":"With Soldered Pin","option1":"With Soldered Pin","option2":null,"option3":null,"sku":"ELC1020S","requires_shipping":true,"taxable":true,"featured_image":{"id":27968699629654,"product_id":1621458255944,"position":3,"created_at":"2021-03-03T17:26:56+05:30","updated_at":"2021-03-03T17:26:56+05:30","alt":"Electret Microphone Amplifier","width":1000,"height":1000,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/HTB1WwgfRIfpK1RjSZFOq6y6nFXaw.jpg?v=1614772616","variant_ids":[15987754631240]},"available":true,"name":"Electret Microphone Amplifier - MAX4466 Sound Sensor with Adjustable Gain - With Soldered Pin","public_title":"With Soldered Pin","options":["With Soldered Pin"],"price":24999,"weight":25,"compare_at_price":29000,"inventory_management":"shopify","barcode":"15987754631240","featured_media":{"alt":"Electret Microphone Amplifier","id":20228150919254,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/HTB1WwgfRIfpK1RjSZFOq6y6nFXaw.jpg?v=1614772616"}},"requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-3.jpg?v=1577794082","\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-2.jpg?v=1577794082","\/\/thinkrobotics.com\/cdn\/shop\/products\/HTB1WwgfRIfpK1RjSZFOq6y6nFXaw.jpg?v=1614772616"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-3.jpg?v=1577794082","options":["Soldered"],"media":[{"alt":"Electret Microphone Amplifier","id":821267365960,"position":1,"preview_image":{"aspect_ratio":1.32,"height":724,"width":956,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-3.jpg?v=1577794082"},"aspect_ratio":1.32,"height":724,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-3.jpg?v=1577794082","width":956},{"alt":"Electret Microphone Amplifier","id":821267398728,"position":2,"preview_image":{"aspect_ratio":1.378,"height":674,"width":929,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-2.jpg?v=1577794082"},"aspect_ratio":1.378,"height":674,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/MAX4466-2.jpg?v=1577794082","width":929},{"alt":"Electret Microphone Amplifier","id":20228150919254,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/HTB1WwgfRIfpK1RjSZFOq6y6nFXaw.jpg?v=1614772616"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/HTB1WwgfRIfpK1RjSZFOq6y6nFXaw.jpg?v=1614772616","width":1000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003e\u003cspan\u003eThis fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power supply noise rejection, so this amplifier sounds really good. \u003c\/span\u003eThis breakout is best used for projects such as voice changers, audio recording\/sampling, and audio-reactive projects that use FFT.\u003c\/p\u003e\n\u003cp\u003eA small trimmer pot to adjust the gain, lets you 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003eUsing it is simple: connect GND to ground, VCC to 2.4-5VDC. 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 OUT pin. The output will have a DC bias of VCC\/2 so when its perfectly quiet, the voltage will be a steady VCC\/2 volts (it is DC coupled). If the audio equipment you're using requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e+2.4V to +5.5V Supply Voltage Operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVersions with 5nA Complete Shutdown Available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent Power-Supply Rejection Ratio: 112dB \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent Common-Mode Rejection Ratio: 126dB \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh AVOL: 125dB (RL = 100kΩ) \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRail-to-Rail Outputs \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow 24µA Quiescent Supply Current\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/images_480x480.png?v=1592343573\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/images_1_480x480.png?v=1592343582\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003eResources\u003c\/h5\u003e\n\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1020\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDatasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1020\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSample Code\u003c\/a\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/OskL19Mb3eI\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/z7MxxVktykA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e"}
