SPECIFICATIONS

Brand Name: Gaqqee

Choice: yes

Condition: New

Dissipation Power: Microphone Breakout Module

High-concerned chemical: none

Operating Temperature: 0-50C

Origin: Mainland China

Package: SMD

Quantity: 1

Supply Voltage: 1.8V To 3.3V

Type: Module

is_customized: Yes

semi_Choice: yes

Product features:
1. Advanced integration capability: The digital PDM MEMS microphone tap module, as a "third class" microphone technology beyond analog or I2S, can seamlessly integrate with electronic devices lacking analog inputs, making it a revolutionary supplement to ordinary products and unique manufacturer projects.
2. For digital system optimization: Unlike many electret microphone components that provide analog output, this small omnidirectional microphone is specifically designed for systems without analog input, using a simple pulse density modulation (PDM) digital interface for direct integration.
3. Simple and efficient digital interface: The microphone sensor utilizes non PWM, non I2S digital outputs through pulse density modulation (PDM), requiring only compatible PDM interfaces in most modern 32-bit processors to ensure efficient and worry free settings for capturing high-quality audio.
4. High frequency clock input: The PDM microphone tap works by receiving clock inputs between 1 MHz and 3 MHz, generating square waves synchronized with the clock on the data line. This feature allows for precise control and flexibility in processing audio signals, making it an ideal choice for advanced audio applications.
5. Simulate output through digital means: With its innovative design, the microphone module outputs square waves, and its density is averaged to simulate the analog output value. This unique approach combines optimal digital accuracy and analog flexibility, providing a universal solution for various audio capture needs.

describe
This is a PDM MEMS microphone, PDM is the "third type" microphone that can be integrated with electronic devices in addition to analog or I2S. These microphones are very commonly used in products, but are rarely seen in maker projects. Firstly, it should be noted that this sensor does not provide "analog" output like many of our electret microphone components. Therefore, it is very suitable for chips without analog inputs. Secondly, the digital interface is a very simple pulse density modulation output. It is digital, but not PWM or I2S. You need to ensure that your chip has a PDM interface - most 32-bit processors today have it!
PDM is a bit like 1-bit PWM, where you provide the microphone with a clock at a rate of 1 MHz to 3 MHz and obtain a square wave synchronized with the clock on the data line. The data line has a logic output of 0 or 1, and the square wave generates density. After averaging, it will produce an analog value output.

Parameters:
Interface: JST SH connector
Voltage range: 1.8-3.3V
Clock frequency: 1-3.25 MHz
Current consumption: 0.6mA
Signal to noise ratio: 61 decibels
Size: 14.0mm x 14.0mm x 4.5mm


Product List:
1X module

Note:
Due to differences in display and lighting effects, the actual color of the item may be slightly different from the color shown in the picture. Thank you.
Due to manual measurement, please allow for a measurement deviation of 1-2cm.