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【Product Introduction】
●INMP441 is a high-performance, low-power, digital output, omnidirectional MEMS microphone with bottom port. The module has a complete INMP441 solution consisting of a MEMS sensor, signal conditioning, analog-to-digital converter, anti-aliasing filter, power management and an industry-standard 24-bit I²S interface.
●I²S interface allows INMP441 to be directly connected to digital processors such as DSPs and microcontrollers without the need for audio codecs 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 natural sound with high clarity.
【Product 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 1.4 mA
6. High PSR: -75 dBFS
【Interface definition】
●SCK: Serial data clock of 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 in the left channel of the I²S frame.
●When set to high, the microphone outputs a signal in the right channel
●SD: Serial data output of the I²S interface.
●VCC: Input power supply, 1.8V to 3.3V.
●GND: Power ground
