The INMP441 is a performance, lowpower digital output, omnidirectional MEMS microphone with bottom port. The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, antialiasing filter, power management and an industry standard 24bit I2S interface. The I2S interface allows the INMP441 to be connected directly to digital processors such as DSPs and microcontrollers without the need for an audio codec for use in the system. Key benefits Direct digital interface: Industry standard 24bit I2S output enables direct connection to digital processors such as DSPs and microcontrollers, eliminating the need for an external audio codec and simplifying system design. digital data: Digital output provides consistent, resolution audio data suitable for speech recognition and voice interfaces. Integrated signal chain: The device combines MEMS sensing, signal conditioning, analog to digital conversion, antialiasing filtering and power management in a single package, reducing component count and simplifying layout. Omnidirectional bottomport design: Bottom port MEMS microphone supports flexible placement and reliable voice capture across a range of environments. Low power operation: Optimized for low power consumption, making it suitable for batterypowered and portable applications. Robust compatibility: Works with common digital processors via the standard I2S interface, enabling straightforward integration into existing DSP or microcontroller workflows. Key attributes Function: Digital omnidirectional MEMS microphone with bottom port and 24bit I2S output. Interface: Industry standard 24bit I2S for direct connection to DSPs and microcontrollers. Sensor technology: MEMS microphone with integrated signal conditioning, ADC, antialiasing filter and power management. Porting: Bottom port orientation to support versatile mounting and acoustic performance. Performance orientation: performance with low power characteristics suitable for voice capture and voiceenabled applications. Use scenarios and applications Voice control and voice UI in smart speakers, home automation hubs, and other consumer electronics that require reliable digital microphone input without an external codec. Conference and hands communication in laptops, desktop computers, and roombased collaboration systems where direct digital microphone input improves audio clarity and simplifies integration. Embedded IoT devices, wearables, and portable electronics that need lowpower, quality digital microphone input while maintaining a compact design and simple system integration. The INMP441 provides a complete, readytouse digital microphone solution with a bottom port design, 24bit I2S interface, and integrated signal conditioning, enabling direct connection to digital processors without the need for an audio codec. This supports straightforward implementation across a range of voiceenabled and soundcensing applications while maintaining a professional, reliable performance profile.