Product introduction:
The INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. Should
The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog - to - digital converters, anti-aliasing filters, power management and an industry-standard 24 -bit IS interface. The IS interface allows the INMP441 to be connected directly to digital processors such as DSPs and microcontrollers without the use of audio codecs used in the system . The INMP441 has a high signal-to-noise ratio, making it an excellent choice for near-field applications. The INMP441 has a flat broadband frequency response, resulting in natural sound with high definition.
Product Features:
1. Digital IS 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 for IS interface
WS : Serial data word selection for IS interface
L/R : Left / right channel selection.
When set to low level, the microphone outputs a signal on the left channel of the IS frame .
When set to high level, the microphone outputs a signal on the right channel
SD : Serial data output of IS interface .
VCC : Input power supply, 1.8V to 3.3V.
GND: power ground