Datasheet > WM7216E

WM7216E

更新时间： 2024-11-14 01:22:59

品牌	Logo	应用领域
凌云 - CIRRUS		/
页数	文件大小	规格书
14页	739K
描述
Low Power Top Port Digital Silicon Microphone

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WM7216E 数据手册

WM7216E

Low Power Top Port Digital Silicon Microphone

DESCRIPTION

FEATURES

The WM7216 is a low-profile digital silicon microphone,

optimised for use with low-power ‘Always-on’ voice control

applications, such as Cirrus Logic^®SoundClear™

software.



High SNR (63dB)

Low variation in sensitivity (±1dB tolerance)

Low current consumption

10μA (Sleep)

The WM7216 supports two operational modes, selected

according to the applied clock frequency. ‘Voice’ mode

provides low current consumption, and sufficient SNR

performance for speech recognition algorithms. ‘Hi-Fi

Record’ mode offers wide dynamic range, and class-

leading THD performance. Operation in the ultrasonic

band is also supported at high clock frequencies.

290μA (Voice mode)

980μA (Hi-Fi Record mode)



PDM digital audio output

Stereo/array operation

Proprietary ADC technology

Reduced clock-jitter sensitivity

Low noise floor

The WM7216 incorporates Cirrus Logic proprietary

CMOS/MEMS membrane technology, offering high

reliability and high performance in a miniature, low-profile

package. The WM7216 is designed to withstand the high

temperatures associated with automated flow solder

assembly processes. (Note that conventional microphones

can be damaged by this process.)

Stable in overload condition



Top Port LGA Package

1.62V to 2.0V supply

APPLICATIONS

The WM7216 incorporates

a high-performance ADC,

which outputs a single-bit data stream using Pulse Density

Modulation (PDM) encoding. The WM7216 supports

selectable left/right channel assignment for a two-channel

digital microphone interface, enabling efficient connection

of multiple microphones in stereo/array configurations.



Mobile telephone handsets

Wearable devices

Portable media players

Digital cameras

Tablets and laptop computers

The WM7216 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.

BLOCK DIAGRAM

3D VIEW

VDD

WM7216

CLK

CHARGE

PUMP

CONTROL

DAT

LRSEL

AMP

ADC

CMOS MEMS

Transducer

GND

4.00mm x 3.00mm x 1.00mm LGA package

Rev 4.0

MAY ‘16

http://www.cirrus.com

12 3 4 5 6 7...14

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与WM7216E相关器件

型号	品牌	获取价格	描述	数据表
WM7216IMSE/RV	CIRRUS	获取价格	Consumer Circuit, CMOS, 4 X 3 MM, 1 MM HEIGHT, 0.85 MM PITCH, HALOGEN AND LEAD FREE, LGA-
WM7220	WOLFSON	获取价格	Top Port Digital Silicon Microphone
WM7220IMS/RV	WOLFSON	获取价格	Top Port Digital Silicon Microphone
WM7220IMS/V	WOLFSON	获取价格	Top Port Digital Silicon Microphone
WM7220IMSE/RV	WOLFSON	获取价格	Top Port Digital Silicon Microphone
WM7220IMSE/V	WOLFSON	获取价格	Top Port Digital Silicon Microphone
WM7230	WOLFSON	获取价格	Bottom Port Digital Silicon Microphone
WM7230IMS/RV	WOLFSON	获取价格	Bottom Port Digital Silicon Microphone
WM7230IMS/V	WOLFSON	获取价格	Bottom Port Digital Silicon Microphone
WM7230IMSE/RV	WOLFSON	获取价格	Bottom Port Digital Silicon Microphone

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