pdf-icon

Unit Mini PDM

SKU:U089

Description

Unit Mini PDM is a digital MEMS silicon microphone based on PDM (Pulse Density Modulation) signal. This microphone features high signal-to-noise ratio, high sensitivity, low power consumption, resistance to RF interference, and smooth frequency response. It automatically switches the microphone state (power off / activate / sleep) based on the clock frequency, making it widely applicable for audio data collection in wearable devices and smart digital devices.

Features

  • PDM signal output (CLK/DAT)
  • High sensitivity, high signal-to-noise ratio
  • Low power consumption
  • Resistant to RF interference
  • Compatible with LEGO

Includes

  • 1 x Unit Mini PDM
  • 1 x HY2.0-4P Grove cable (5cm)

Applications

  • Spectrum analyzer
  • Recording
  • Sound level meter

Specifications

Specification Parameter
Digital Microphone SPM1423
Sensitivity 94dB SPL@1KHz, typical: -22dBFS
Signal-to-Noise Ratio 94dB SPL@1KHz, A-weighted, typical: 61.4dB
Total Harmonic Distortion 100dB SPL@1KHz, typical: 1%
Operating Current 600µA
Net Weight 4g
Gross Weight 8g
Product Dimensions 24 x 24 x 13mm
Package Dimensions 136 x 92 x 13mm
Housing Material Plastic (PC)

Schematics

PinMap

Unit Mini PDM

HY2.0-4P Black Red Yellow White
PORT.B GND 5V Data Clock

Model Size

Datasheets

Softwares

Arduino

EasyLoader

Easyloader Download Link Notes
Unit PDM Test Easyloader download /

Video