printed circuit board microphone / CMOS / MEMS / surface-mount
SPx series Knowles Electronics, LLC



  • Applications:

    for printed circuit boards

  • Technology:


  • Other characteristics:



Built on our CMOS/MEMS technology platform (originally launched in 2002), the SiSonic™ silicon-based microphone series is entering its fourth generation of development, with product shipments exceeding 5 billion units to date. The proven and evolving design series continues to support high-performance, high-density innovation in such applications as cell phones, digital still cameras, portable music players, and other portable electronic devices.
Design variables include ever-smaller sizes, lower profiles and mounting options, increased output capacities, and new digital audio options that eliminate analog noise. For manufacturers, surface mount designs eliminate off-line subassembly production costs. Customized designs are supplied on tape-and-reel and can be run through standard automatic pick-n-place equipment during in-line surface mount manufacturing.
The microphones can also be integrated with our patented IntelliSonic™ software and special porting designs to provide a precisely customized sound.


New MaxRF models eliminate GSM/TDMA burst noise and provide wide-band RF noise suppression
UltraMini footprint - less than 11.5mm
Slim UltraMini footprint - less than 8.5mm
Digital mics eliminate analog noise
Integrated designs with differential or switchable gain
Bottom port for thinnest ever designs
Multiple performance modes (sleep, low-power, standard mode) optimize voice-trigger applications by entering a low-power high-SNR sensing mode