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WM7210IMS/V Datasheet(PDF) 1 Page - Wolfson Microelectronics plc

Part # WM7210IMS/V
Description  Top Port Digital Silicon Microphone
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM7210IMS/V Datasheet(HTML) 1 Page - Wolfson Microelectronics plc

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WM7210, WM7210E
Top Port Digital Silicon Microphone
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Preliminary Technical Data, January 2012, Rev 2.2
Copyright
2012 Wolfson Microelectronics plc
DESCRIPTION
The WM7210 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
WM7210
incorporates
Wolfson’s
proprietary
CMOS/MEMS
membrane
technology,
offering
high
reliability and high performance in a miniature, low-profile
package. The WM7210 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 WM7210 incorporates a high performance ADC,
which outputs a single-bit Pulse Density Modulated (PDM)
audio data stream. The WM7210 supports selectable
left/right channel assignment for a two-channel digital
microphone interface, enabling efficient connection of
multiple microphones in stereo/array configurations.
The WM7210E variant offers a tighter 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; selectable sensitivity tolerance options
-
WM7210 – SNR 58dB, Sensitivity +/-3dB
-
WM7210E – SNR 58dB, Sensitivity +/-1dB
Low power
-
Sleep mode - 2μA
-
Normal operation - 650μA
Low profile packaging
Support for automated flow solder assembly
PDM digital audio output
Stereo/array operation
Proprietary ADC technology
-
Reduced clock jitter sensitivity
-
Low noise floor modulation
-
Stable in overload condition
Top port package
1.64V to 3.7V supply
4.00 x 3.00 x 1.03mm thin package design
APPLICATIONS
Mobile telephone handsets
Portable computers
Portable media players
Digital still cameras
Digital video cameras
Bluetooth headsets
Portable navigation devices
BLOCK DIAGRAM


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