G-Sense ICS-43434 2CHANNEL MEMS High Precision Omnidirectional Microphone Module I2S

The ICS-43434 is digital I2S output bottom port microphone and it’s a great replacement/alternate for INMP441. The complete ICS-43434 solution consists of a MEMS sensor, signal conditioning, an analog-to-digital converter, decimation and antialiasing filters, power management, and an industry standard 24-bit I²S interface. The I²S interface allows the ICS-43434 to connect directly to digital processors, such as DSPs and microcontrollers, without the need for an audio codec in the system. The ICS-43434 has multiple modes of operation: HighPerformance, Low Power (AlwaysOn) and Sleep. The ICS-43434 has high SNR and 120 dB SPL AOP in all operational modes.

Interface definition

• SCK: Serial data clock for I2S interface
• WS: Serial data word selection for I2S interface

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 signals on the right channel

• SD: Serial data output of the I2S interface.
• VCC: Input power, 1.8V to 3.3V.
• GND: power ground

ICS-43434 connection with ESP32 / GLYPH Development Board

• SCK -GPIO 20
• SD – SCK
• WS – MO
• GND – GND
• VDD – VDD3.3

Features:

• Digital I2S interface with high precision 24-bit data
• High signal to noise ratio is 65 dBA
• High sensitivity – 26 dB
• Stable frequency response from 23Hz to 51.6kHz
• Low power consumption: low current consumption 230uA
• AOP: 120 SPL
• Stereo Audio Recording