INMP441 MEMS Microphone

• The INMP441 is a high performance, low-power omnidirectional MEMS microphone with a base port.
• The complete INMP441 solution includes MEMS sensor, signal conditioning, analog-to-digital converter, anti-aliasing filters, power management and an industry-standard 24-bit I²S interface.
• The I²S interface allows the INMP441 to connect directly to digital processors, such as DSPs and microcontrollers, without the need for an audio codec in the system.
• The INMP441 has a high RSB, making it an excellent choice for near-field applications. The INMP441 has a flat broadband frequency response, which allows to achieve natural sound with high intelligibility.
• The INMP441 is available in a 4.7 x 3.75 x 1.0 mm thin surface mount box. It is compatible with reflow soldering without degradation of sensitivity. INMP441 is halide free.

Specifications:

• Supply voltage: 1.8-3.3V DC
• Signal voltage: 1.8-3.3V
• Average current: ~1.4mA
• Chip: INMP441
• Frequency range: 60-15,000Hz
• Sensitivity: ~-26dBFS
• Communication: I2S
• PCB dimensions: 14 x 14mm

Pinout:

• SD: I2S data signal
• VDD: Supply voltage
• GND: Ground/min
• L/R: Left/Right channel selection (low = left channel, high = right channel)
• WS: I2S word select
• SCK: I2S clock signal