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WM7121PE

Cirrus Logic
Part Number WM7121PE
Manufacturer Cirrus Logic
Description Top Port Analog Silicon Microphone
Published May 27, 2016
Detailed Description WM7121PE Top Port Analog Silicon Microphone DESCRIPTION The WM7121P is a low-profile silicon analog microphone. It off...
Datasheet PDF File WM7121PE PDF File

WM7121PE
WM7121PE

Overview
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 BLOCK DIAGRAM WM7121P VDD CHARGE PUMP 3D VIEW CMOS MEMS Transducer AMP GND OUTPUT 3.
76mm x 2.
95mm x 1.
10mm LGA package http://www.
cirrus.
com Copyright  Cirrus Logic, Inc.
, 2014–2016 (All Rights Reserved) Rev 4.
1 MAR ‘16 TABLE OF CONTENTS WM7121PE DESCRIPTION.
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