It has the characteristics of long sensing distance, high reliability, large sensing angle and wide application range.
Product description:
A high performance, low power, digital output, omnidirectional microphone with bottom port. This
The complete solution includes sensors, signal conditioning, analog-to-digital converters, anti-aliasing filters, power management and an industry standard 24-bit I2S interface. The I2S interface allows direct connection to digital processors such as DSPs and microcontrollers without the need for audio codecs in the system. With a high signal-to-noise ratio, it is an excellent choice for near-field applications. Features a flat wideband frequency response for high definition natural sound.
Features:
1. Digital I2S interface with high precision 24-bit data
2. High signal-to-noise ratio of 61 dBA
3. High sensitivity - 26 dBFS
4. Stable frequency response from 60 Hz to 15 kHz
5. Low power consumption: low current consumption of 1.4 mA
6. High PSR: -75 dBFS
Interface definition:
SCK: Serial data clock for I2S interface
WS: Serial data word selection for I2S interface
L/R: Left/Right channel selection.
When set to low, the microphone outputs a signal on the left channel of the I2S frame.
When set to high level, the microphone outputs the signal in the right channel
SD: Serial data output of I2S interface.
VCC: Input Power, 1.8V to 3.3V.
GND: power ground
This product provides a tutorial for using the I2S-capable ESP32 module.
Connect to ESP32:
INMP441 ESP32
SCK >> GPIO14
SD >> GPIO32
WS >> GPIO15
left/right >> ground
ground >> ground
VDD >> VDD3.3
If you have any questions about this product, please contact us and we will try our best to solve the problem until you are satisfied.