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WM7331E Dataheets PDF



Part Number WM7331E
Manufacturers Cirrus Logic
Logo Cirrus Logic
Description Bottom Port Analog Silicon Microphone
Datasheet WM7331E DatasheetWM7331E Datasheet (PDF)

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 implemen.

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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 to modify this product. Copyright  Cirrus Logic, Inc., 2014–2016 (All Rights Reserved) Rev 3.2 APR ‘16 TABLE OF CONTENTS WM7331E DESCRIPTION................................................................................................................ 1 FEATURES..................................................................................................................... 1 APPLICATIONS ............................................................................................................. 1 BLOCK DIAGRAM ......................................................................................................... 1 3D VIEW ......................................................................................................................... 1 TABLE OF CONTENTS.................................................................................................. 2 PIN CONFIGURATION ................................................................................................... 3 PIN DESCRIPTION......................................................................................................... 3 ORDERING INFORMATION........................................................................................... 3 ABSOLUTE MAXIMUM RATINGS ................................................................................. 4 IMPORTANT ASSEMBLY GUIDELINES ....................................................................... 4 RECOMMENDED OPERATING CONDITIONS.............................................................. 4 ACOUSTIC AND ELECTRICAL CHARACTERISTICS .................................................. 5 TERMINOLOGY .........................................................................................................................5 TYPICAL PERFORMANCE............................................................................................ 6 APPLICATIONS INFORMATION ................................................................................... 7 RECOMMENDED EXTERNAL COMPONENTS........................................................................7 CONNECTION TO A CIRRUS LOGIC CODEC .........................................................................8 PCB LAND PATTERN AND PASTE STENCIL ..........................................................................9 PACKAGE DIMENSIONS............................................................................................. 10 IMPORTANT NOTICE .................................................................................................. 11 REVISION HISTORY .................................................................................................... 12 2 Rev 3.2 PIN CONFIGURATION 3 WM7331E 4 12 Top View PIN DESCRIPTION PIN NAME 1 VDD 2 OUTPUT 3 GND 4 GND TYPE Supply Analog Output Supply DESCRIPTION Analog supply Microphone analog output signal Analog ground Can be left floating (recommended), or connected to GND ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE WM7331IMSE/RV -40 to +100°C Note: Reel quantity = 6000 All devices are Pb-free and Halogen free. PACKAGE LGA (tape and reel) MOISTURE PEAK SOLDERING SENSITIVITY LEVEL TEMPERATURE MSL2A +260°C Rev 3.2 3 WM7331E ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given und.


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