50pcs/1pc INMP441 ICS-43434 Omnidirectional Microphone Module I2S ISS MEMS for ESP32 High Precision Low Power Sensor Ultra Small

NMP441 is an omnidirectional MEMS microphone with high performance, low power consumption, digital output and bottom port. The complete INMP441 solution consists of a MEMS sensor, signal composition conditioning, analog-to-digital converter, anti-aliasing filter, power management and industry standard 24-bit I⊃2;S interface. The I⊃2;S interface allows INMP441 to be directly connected to digital processors, such as DSPs and microcontrollers, without the need for the audio codec used in the system. INMP441 has a high signal-to-noise ratio and is an excellent choice for near-field applications. INMP441 has a flat broadband frequency response, resulting in high definition of natural sound.

Product Features:

1. Digital I⊃2;S 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 of I⊃2;S interface

WS: Serial data word selection for I⊃2;S interface

L/R: Left/right channel selection.

When set to low level, the microphone outputs signals on the left channel of the I⊃2;S frame.

When set to high level, the microphone outputs signals on the right channel

SD: Serial data output of I⊃2;S interface.

VCC: Input power, 1.8V to 3.3V.

GND: power ground

ESP32 development board connection:

INMP441 ESP32 Development Board

SCK >> GPIO14

SD >> GPIO32

WS >> GPIO15

L/R >> GND

GND >> GND

VDD >> VDD3.3

ICS-43434 is a digital I2S output bottom-end microphone. The complete ICS-43434 solution includes MEMS sensor, signal conditioning, analog-to-digital converter, decimation and anti-aliasing filters, power management, and industry-standard 24-bit I2S interface. The I2S interface allows the ICS-43434 to be directly connected to digital processors (such as DSPs and microcontrollers) without the need for an audio codec in the system. The ICS-43434 has multiple operating modes: high performance, low power (always on), and sleep. The ICS-43434 has a high signal-to-noise ratio and 120 dB sound pressure level AOP in all operating modes. The ICS-43434 has a high signal-to-noise ratio of 65 dBA and a wideband frequency response. The sensitivity tolerance of the ICS-43434 is ±1 dB, which allows high-performance microphone arrays without system calibration. Usage examples with the I2S-enabled ESP32 are provided.

Product Features:

1. High-precision 24-bit digital I2S interface

2. Wide frequency response from 60 Hz to 20 kHz

3. High power supply rejection ratio: -100 dB FS

4. Sensitivity: -26dB FS±1dB

5. Signal-to-noise ratio: 64 dBA

6. Low power consumption: 230uA