WM7231 datasheet(1/14 Pages) WOLFSON

Il numero della parte	WM7231

Spiegazioni elettronici	Bottom Port Digital Silicon Microphone

PDF	14 Pages

Scroll/Zoom	100%

Produttore elettronici	WOLFSON [Wolfson Microelectronics plc]

Homepage	http://www.wolfsonmicro.com

Logo

1 / 14 page

w

WM7231, WM7231E

Bottom Port Digital Silicon Microphone

WOLFSON MICROELECTRONICS plc

Pre-Production, January 2014, Rev 3.0

Copyright

2014 Wolfson Microelectronics plc

DESCRIPTION

The WM7231 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

WM7231

incorporates

Wolfson’s

proprietary

CMOS/MEMS

membrane

technology,

offering

high

reliability and high performance in a miniature, low-profile

package. The WM7231 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 WM7231 incorporates a high performance ADC,

which outputs a single-bit Pulse Density Modulated (PDM)

audio data stream. The WM7231 supports selectable

left/right channel assignment for a two-channel digital

microphone interface, enabling efficient connection of

multiple microphones in stereo/array configurations.

The WM7231E 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

-

WM7231 – SNR 60dB, Sensitivity +/-3dB

-

WM7231E – SNR 60dB, Sensitivity +/-1dB



Low power

-

Sleep Mode - 2μA

-

Normal Operation - 735μA



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



Bottom Port Package



1.62V to 3.7V supply



4.00 mm x 3.00 mm x 1.00mm 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

WM7231

AMP

Transducer

(CMOS MEMS)

VDD

DAT

CHARGE

PUMP

GND

ADC

CONTROL

CLK

LRSEL

Codice articolo simile - WM7231

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Wolfson Microelectronic...	WM7230	320Kb / 12P	Bottom Port Digital Silicon Microphone
	WM7230IMS/RV	320Kb / 12P	Bottom Port Digital Silicon Microphone
	WM7230IMS/V	320Kb / 12P	Bottom Port Digital Silicon Microphone
	WM7230IMSE/RV	320Kb / 12P	Bottom Port Digital Silicon Microphone
	WM7230IMSE/V	320Kb / 12P	Bottom Port Digital Silicon Microphone

More results

Descrizione simile - WM7231

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Wolfson Microelectronic...	WM7130A	340Kb / 12P	Bottom Port Analogue Silicon Microphone
	WM7132	338Kb / 12P	Bottom Port Analogue Silicon Microphone
	WM7230	320Kb / 12P	Bottom Port Digital Silicon Microphone
	WM7133L	296Kb / 13P	Bottom Port Analogue Silicon Microphone
Cirrus Logic	WM7236E	737Kb / 14P	Low Power Bottom Port Digital Silicon Microphone
	WM7331E	787Kb / 12P	Bottom Port Analog Silicon Microphone
	WM7132	727Kb / 12P	Bottom Port Analog Silicon Microphone
	WM7236	739Kb / 14P	Low Power Bottom Port Digital Silicon Microphone
	WM7331	787Kb / 12P	Bottom Port Analog Silicon Microphone
	WM7132PE	727Kb / 12P	Bottom Port Analog Silicon Microphone

More results

WM7231 Scheda tecnica(PDF) 1 Page - Wolfson Microelectronics plc

WM7231 Scheda tecnica(HTML) 1 Page - Wolfson Microelectronics plc

Codice articolo simile - WM7231

Descrizione simile - WM7231

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Scheda tecnica Scarica

Link URL