Mic Omni-Directional 150Ohm -38dBV 3.7V Rectangular Solder Pad

The WM7121P is a low-profile silicon analog microphone. It offers high Signal to Noise Ratio (SNR) and low power consumption and is suited to a wide variety of consumer applications. The WM7121P incorporates Cirrus Logic’s proprietary CMOS/MEMS membrane technology, offering high reliability and high performance in a miniature, low-profile package. The WM7121P is designed to withstand the high temperatures associated with automated flow solder assembly processes. The WM7121P Top Port microphone offers matched performance to the WM7132P Bottom Port microphone. The matched characteristics enable highly accurate sound pick-up in opposite directions, suitable for noise cancellation and other DSP algorithms. The WM7121PE variant offers a tighter tolerance on the microphone sensitivity, giving reduced variation between parts. This removes the need for in-line production calibration of part-to-part microphone variations.

• High SNR (65dB)
• Low variation in sensitivity
  • ±1dB tolerance (WM7121PE)
• Matched pair with Bottom Port microphone WM7132PE
  • Matched sensitivity, roll-off and phase response
• Low current consumption (190µA)
• Analog output
• Top Port LGA Package
• 1.5V to 3.7V supply