WM7121PE

WM7121PE Top Port Analog Silicon Microphone DESCRIPTION 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® 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. (Note that conventional microphones can be damaged by this process.) The WM7121P Top Port microphone offers matched performance to the WM7132P Bottom Port microphone. The matched characteristics enable highly accurate sound pickup in opposite directions, suitable for noise cancellation and other DSP algorithms. The WM7121P offers tight tolerance on the microphone sensitivity, giving reduced variation between parts. This removes the need for in-line production calibration of partto-part microphone variations. FEATURES  High SNR (65dB)  Low variation in sensitivity (±1dB tolerance)  Matched pair with Bottom Port microphone WM7132P - Matched sensitivity, roll-off, and phase response  Low current consumption (190µA)  Analog output  Top Port LGA Package  1.5V to 3.7V supply APPLICATIONS  Mobile phone handsets  Portable media players  Digital still cameras  Digital video cameras  Bluetooth™ headsets  Portable navigation devices  Portable games consoles ...