WM7331E

WM7331E Bottom Port Analog Silicon Microphone DESCRIPTION The WM7331 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 WM7331 incorporates Cirrus Logic® proprietary CMOS/MEMS membrane technology, offering high reliability and high performance in a miniature, low-profile package. The compact integration of transducer and internal circuitry on a single die enables implementation within an extremely small package size. The WM7331 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 WM7331 offers tight tolerance on the microphone sensitivity, giving reduced variation between parts. This removes the need for in-line production calibration of part-topart microphone variations. FEATURES  High SNR (63dB)  Low variation in sensitivity (±1dB tolerance)  Low current consumption (55µA)  Analog output  Bottom Port LGA Package  2.5mm x 1.6mm x 0.9mm package  1.6V to 3.6V supply APPLICATIONS  Mobile phone handsets  Wearable devices  Portable media players  Digital cameras BLOCK DIAGRAM VDD WM7331 3D VIEW CHARGE PUMP CMOS MEMS Transducer AMP OUTPUT 2.50mm x 1.60mm x 0.90mm LGA package GND Pre-Production http://www.cirrus.com This document contains information for a product under development. Cirrus Logic reserves the right...