-The ADMP401 is a high quality, low cost, low power analog output bottom-ported omnidirectional MEMS microphone.
-The ADMP401 consists of a MEMS microphone element, an impedance converter, and an output amplifier.
-The ADMP401 sensitivity specification makes it an excellent choice for both near field and far field applications.
-The ADMP401 has a high SNR and flat wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption enables long battery life for portable applications.
-A built-in particle filter provides for high reliability.
-The ADMP401 complies with the TIA-920 standard Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones.
-This tiny breakout board features the ADMP401 MEMs microphone.
-One of the key advantages to this breakout and microphone is the bottom ported input.
-This means the microphone's input can fit flush against the enclosure of your project.
-Plus you will not have to deal with trying to solder the microphone's wacky footprint.
-The amplifier on the breakout has a gain of 67 and more than meets the bandwidth requirements of the mic.
-The amplifier's AUD output will float at one half Vcc when no sound is being picked up.
-The amplifier produces a peak-to-peak output of about 200mV when the microphone is held at arms length and is being talked into at normal conversational volume levels.
-So the AUD output can easily be connected to the ADC of a micro.
Features:
-ADMP401 is a high quality, low cost, low power analog output bottom-ported omnidirectional MEMS microphone
-This tiny breakout board features the ADMP401 MEMs microphone
-Applications
-Smartphones and feature phones
-Digital video cameras
-Bluetooth headsets
-Video phones
-Teleconferencing systems
Pinouts:
-Vcc: 1.5 to 3.3V DC
-GND: GND
-AUD: Output Signal
SPECIFICATIONS:
-3dB roll off at 100Hz and 15kHz
-1.5 to 3.3VDC supply voltage
-Should comfortably output 40mW
-SNR of -62dBA
OVERVIEW:
-Omnidirectional MEMS microphone
-High SNR
-Low current consumption
PACKAGE INCLUDES:
1 PCS x Admp401 Mems Omnidirectional Microphone High Snr Low Power Module Analog Output
https://www.analog.com/en/products/admp401.html
//SOURCE CODE TAKEN FROM BELOW LINK
//https://www.instructables.com/Using-Breakout-Board-for-ADMP401-MEMS-Microphone-o/
#include
int adc_id = 2;
int delay_us = 100000;
int HistoryValue = 0;
char buffer[100];
void setup()
{
memset(buffer,0,sizeof(buffer));
}
void loop()
{
int value = analogRead(adc_id); // get adc value
value = ((float)value/4096)*sizeof(buffer);
if(((HistoryValue>=value) && ((HistoryValue - value) > 2)) || ((HistoryValue 2)))
{
memset(buffer,'*',value);
buffer[value] = 0;
printf("%s\n",buffer);
}
HistoryValue = value;
}
9962060070