The INMP522 is a high performance, ultralow noise, low power, digital output, bottom-ported omnidirectional MEMS microphone. The INMP522 has a sensitivity tolerance of ±1 dB from part to part, making it ideal for microphone array and beamforming applications.
The INMP522 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ Δ modulator. The digital interface enables the pulse density modulated (PDM) output of two microphones to be time-multiplexed on a single data line using a single clock. The INMP522 is function-and pin-compatible with the INMP521 and INMP421 microphones, providing an easy upgrade path.
The INMP522 has a very high signal-to-noise ratio (SNR) and common sensitivity of −26 dBFS, making it an excellent choice for far-field applications. The INMP522 has an extended wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 2 µA current consumption enables long battery life for portable applications.
The INMP522 is available in a thin 4 mm × 3 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.
|Part #||Output||Port Location||SNR||Equivalent
||Maximum SPL||Sensitivity @1kHz||Sensitivity Tol||Package Size||Documentation||Flex Board||Evaluation Board||Device|
|UNITS:||(dBA)||(dBA)||(min - max)||+/- dB||mm||(.pdf)||(add to cart)||(add to cart)||(add to cart)|
|PDM||Bottom||65dB||29dB||75Hz - 20kHz||116dB SPL||-26 dBFS||1dB||3.00x4.00x1.00|