SPM0423HD4H-WB
Digital SiSonicTM Microphone
The SPM0423HD4H-WB is a miniature, high-
performance, low power, top port silicon
digital microphone with a single bit PDM
output. Using Knowles’ proven high
performance SiSonicTM MEMS technology,
the SPM0423HD4H-WB consists of an
acoustic sensor, a low noise input buffer,
and a sigma-delta modulator. These devices
are suitable for applications such as
cellphones, smart phones, laptop
Features:
PDM Output
Supports Dual Multiplexed Channels
Ultra-Stable Performance
Standard SMD Reflow
Omnidirectional
computers, sensors, digital still cameras,
portable music recorders, and other
portable electronic devices where excellent
wideband audio performance and RF
immunity are required.
Revision: C
Sheet 1 of 13
2/28/2013
©2013 Knowles Electronics
KNOWLES [ KNOWLES ELECTRONICS ]
