INMP441 MEMS High Precision Omnidirectional Microphone Module I2S
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INMP441 MEMS High Precision Omnidirectional Microphone Module I2S The INMP441 is a digital MEMS microphone that is omnidirectional and has a bottom port. It is designed to be high-performing and low-power, and the complete solution includes a MEMS sensor , signal conditioning, analog to digital converter, anti-aliasing filter, power management, and a 24-bit I2S interface that is industry-standard. The I2S interface is especially useful because it allows for direct connection to digital processors such as microcontrollers and DSPs without the need for an audio codec. With a high signal-to-noise ratio, the INMP441 is a great option for applications in close proximity. It also has a flat wideband frequency response that results in natural and high-definition sound. 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 signals on the right channel SD: Serial data output of the I2S interface. VCC: Input power, 1.8V to 3.3V. GND: power ground NMP441 connection with ESP32 SCK -GPIO14 SD – GPIO32 WS – GPIO15 L/R – GND GND – GND VDD – VDD3.3 Features: Digital I2S interface with high precision 24-bit data High signal to noise ratio is 61 dBA High sensitivity – 26 dBFS Stable frequency response from 60 Hz to 15 kHz Low power consumption: low current consumption 1.4 mA High PSR: -75 dBFS
- 24-bit I2S digital output for high-resolution audio
- High SNR of 61 dBA for clear sound capture
- Low power consumption: 1.4 mA at 3.3V
- Wide operating voltage: 1.8V to 3.3V
- Flat frequency response: 60 Hz – 15 kHz
- Direct interface with ESP32, Arduino, and Raspberry Pi
- Omnidirectional pickup pattern with bottom port design
- No external codec required
- Digital I2S interface with 24-bit audio data
- High signal-to-noise ratio for professional audio quality
- Low-power design ideal for battery-operated devices
- Wide compatibility with popular MCUs and development boards
- Integrated MEMS sensor and signal conditioning
- Supports left/right channel selection via L/R pin
| Supply voltage | 3.3V |
|---|---|
| Communication interface | Inter-IC Sound (I2S) |
| Sensitivity | High |
| SNR | High |
What is the operating voltage of the INMP441 microphone module?
The INMP441 operates at 1.8V to 3.3V, making it compatible with 3.3V microcontrollers like ESP32 and Arduino.
Can the INMP441 be used with ESP32?
Yes, the INMP441 connects directly to ESP32 via I2S using GPIO pins for SCK, WS, SD, and L/R.
Does the INMP441 require an external audio codec?
No, the built-in I2S interface allows direct digital connection to MCUs and DSPs without an audio codec.
What is the signal-to-noise ratio of the INMP441?
The INMP441 has a high SNR of 61 dBA, ensuring clear and low-noise audio capture.
What is the sensitivity and frequency response range of the INMP441?
The INMP441 has a sensitivity of -26 dBFS and a stable frequency response from 60 Hz to 15 kHz.
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About INMP441 MEMS High Precision Omnidirectional Microphone Module I2S by Iotcart
Buy INMP441 MEMS microphone with I2S interface. Compatible with ESP32, Arduino. 24-bit audio, 61 dBA SNR. Low power 1.8V-3.3V.
Categorised under: Raspberry Pi Kits› Microphones