View source for Knowles PDM Mono Audio Microphone - SPM1423HM4H

[[Image:TArduinoSPM1423HM4H.png]]

== Summary ==
Low-power, top-port MEMS microphone with PDM digital output, designed for high-fidelity audio capture in compact devices.:contentReference[oaicite:2]{index=2}

== Description ==
The **SPM1423HM4H** is a MEMS-based microphone featuring a Pulse Density Modulation (PDM) interface, designed for high-fidelity audio capture in space-constrained applications. It operates with a supply voltage range of 1.6V to 3.6V and offers a signal-to-noise ratio (SNR) of 61.5 dB. The microphone is omnidirectional, capturing sound from all directions, and is suitable for use in various embedded systems requiring audio input.:contentReference[oaicite:9]{index=9}

The **Right Channel** boolean property allows configuration of the microphone's output channel.:contentReference[oaicite:12]{index=12}

The component provides **Control** and **Data** pins for interfacing with the microphone.:contentReference[oaicite:15]{index=15}

<b>Diagram:</b>

[[Image:TArduinoSPM1423HM4H.Preview.png]]

== Categories ==
*[[Image:TArduinoAudioCategory.png]] [[Category Audio]] – Audio input components.

== Properties ==
*'''Enabled''' – Enables or disables the component.
*'''Right Channel''' – Configures the microphone's output channel (boolean).:contentReference[oaicite:20]{index=20}

== Pins ==
=== Input Pins ===
*'''Control''' – Control signals for microphone operation.
*'''Data''' – Digital audio data output.:contentReference[oaicite:25]{index=25}

=== Output Pins ===
*'''Out''' – Microphone audio output.:contentReference[oaicite:28]{index=28}

[[Category:Components]]