Silicon Microphone. WM7211E Datasheet

WM7211E Microphone. Datasheet pdf. Equivalent

WM7211E Datasheet
Recommendation WM7211E Datasheet
Part WM7211E
Description Top Port Digital Silicon Microphone
Feature WM7211E; WM7211E Top Port Digital Silicon Microphone DESCRIPTION The WM7211 is a low-profile silicon digita.
Manufacture Cirrus Logic
Datasheet
Download WM7211E Datasheet




Cirrus Logic WM7211E
WM7211E
Top Port Digital Silicon Microphone
DESCRIPTION
The WM7211 is a low-profile silicon digital microphone. It
offers high Signal-to-Noise Ratio (SNR) and low power
consumption and is suited to a wide variety of consumer
applications.
The WM7211 incorporates Cirrus’s proprietary
CMOS/MEMS membrane technology, offering high
reliability and high performance in a miniature, low-profile
package. The WM7211 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 WM7211 incorporates a high performance ADC,
which outputs a single-bit data stream using Pulse Density
Modulation (PDM) encoding. The WM7211 supports
selectable left/right channel assignment for a two-channel
digital microphone interface, enabling efficient connection
of multiple microphones in stereo/array configurations.
The WM7211 offers tight 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.
FEATURES
High SNR (61dB)
Low variation in sensitivity (±1dB tolerance)
Low current consumption
- 2μA (Sleep)
- 735μA (Normal operation)
PDM digital audio output
Stereo/array operation
Proprietary ADC technology
- Reduced clock jitter sensitivity
- Low noise floor
- Stable in overload condition
Top Port LGA Package
1.64V to 3.7V supply
APPLICATIONS
Mobile telephone handsets
Portable computers
Portable media players
Digital still cameras
Digital video cameras
Bluetooth headsets
Portable navigation devices
BLOCK DIAGRAM
WM7211
VDD
CHARGE
PUMP
CONTROL
3D VIEW
CLK
DAT
LRSEL
CMOS MEMS
Transducer
AMP
ADC
GND
4.00mm x 3.00mm x 1.00mm LGA package
http://www.cirrus.com
Copyright Cirrus Logic, Inc., 20112016
(All Rights Reserved)
Rev 4.0
MAR ‘16



Cirrus Logic WM7211E
TABLE OF CONTENTS
WM7211E
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 .........................................................................................................................6
AUDIO INTERFACE TIMING .....................................................................................................7
TYPICAL PERFORMANCE ............................................................................................ 8
APPLICATIONS INFORMATION ................................................................................... 9
RECOMMENDED EXTERNAL COMPONENTS ........................................................................9
OPTIMISED SYSTEM RF DESIGN ...........................................................................................9
CONNECTION TO A CIRRUS AUDIO CODEC .........................................................................9
PCB LAND PATTERN AND PASTE STENCIL ........................................................................10
PACKAGE DIMENSIONS............................................................................................. 11
IMPORTANT NOTICE .................................................................................................. 12
REVISION HISTORY .................................................................................................... 13
2 Rev 4.0



Cirrus Logic WM7211E
PIN CONFIGURATION
WM7211E
32
41
5
Top View
PIN DESCRIPTION
PIN NAME
1 VDD
2 LRSEL
TYPE
Supply
Digital Input
3 CLK Digital Input
4
DAT
Digital Output
5 GND
Supply
DESCRIPTION
Power Supply
Channel Select
0 = Data output following falling CLK edge
1 = Data output following rising CLK edge
Internal pull-down holds this pin at logic 0 when not connected
Clock input
PDM Data Output
Ground
ORDERING INFORMATION
ORDER CODE
TEMPERATURE
RANGE
WM7211IMSE/RV
-40 to +100°C
Note:
Reel Quantity = 4800
All devices are Pb-free and Halogen free.
PACKAGE
LGA
(tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL2A
PEAK SOLDERING
TEMPERATURE
+260°C
Rev 4.0
3







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)