Datasheet > WM7121

WM7121

更新时间： 2022-04-07 10:27:18

品牌	Logo	应用领域
欧胜 - WOLFSON		/
页数	文件大小	规格书
12页	219K
描述
Top Port Analogue Silicon Microphone

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WM7121 数据手册

WM7121, WM7121E

Top Port Analogue Silicon Microphone

DESCRIPTION

FEATURES



High SNR; selectable sensitivity tolerance options

The WM7121 is a low-profile silicon analogue microphone. It

offers high Signal to Noise Ratio (SNR) and low power

consumption and is suited to a wide variety of consumer

applications.

WM7121 - SNR 65dB, Sensitivity +/-3dB

WM7121E - SNR 65dB, Sensitivity +/-1dB



Matched performance to bottom port microphone WM7132

The

WM7121

incorporates

Wolfson’s

proprietary

Matched sensitivity performance

Matched frequency response

Matched phase response

CMOS/MEMS membrane technology, offering high reliability

and high performance in a miniature, low-profile package.

The WM7121 is designed to withstand the high

temperatures associated with automated flow solder

assembly processes. (Note that conventional microphones

can be damaged by this process.)



Low supply current 200µA

Low profile packaging

Support for automated flow solder assembly

Analogue output

The WM7121E 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.

Top Port Package

1.5V to 3.7V supply

3.76mm x 2.95mm x 1.10mm Package

APPLICATIONS



Mobile phone handsets

Portable media players

Digital still cameras

Digital video cameras

Bluetooth headsets

Portable navigation devices

Portable games consoles

BLOCK DIAGRAM

VDD

Charge

Pump

Transducer

(CMOS MEMS)

OUTPUT

Amp

WM7121

GND

Preliminary Technical Data, October 2012, 2.0

WOLFSON MICROELECTRONICS plc

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