WM7211IMSE/V datasheet, PDF - EEWORLD Datasheet

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WM7211IMSE/V: DescriptionConsumer Circuit, CMOS,; CategoryOther integrated circuit (IC) Consumption circuit; File Size293KB，12 Pages; ManufacturerWolfson Microelectronics plc (Cirrus Logic); Websitehttp://www.wolfson.co.uk; Environmental Compliance

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WM7211IMSE/V Overview

Consumer Circuit, CMOS,

WM7211IMSE/V Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Wolfson Microelectronics plc (Cirrus Logic)
Reach Compliance Code	unknown
Commercial integrated circuit types	CONSUMER CIRCUIT
Number of terminals	5
Maximum operating temperature	100 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
Encapsulate equivalent code	LGA5(UNSPEC)
power supply	1.8 V
Certification status	Not Qualified
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Base Number Matches	1

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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 Wolfson’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 Pulse Density Modulated (PDM)

audio data stream. 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 WM7211E 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.



WM7211, WM7211E

Top Port Digital Silicon Microphone

FEATURES

High SNR; selectable sensitivity tolerance options

WM7211 – SNR 61dB, Sensitivity +/-3dB

WM7211E – SNR 61dB, Sensitivity +/-1dB

Sleep mode - 2μA

Normal operation - 700μA

Low power

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 1.00mm 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

WOLFSON MICROELECTRONICS plc

Preliminary Technical Data, May 2013, Rev 2.5

2013

Wolfson Microelectronics plc

WM7211

TABLE OF CONTENTS

Preliminary Technical Data

DESCRIPTION ....................................................................................................... 1

FEATURES ............................................................................................................ 1

APPLICATIONS..................................................................................................... 1

BLOCK DIAGRAM ................................................................................................ 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 ............................................................................................................... 5

AUDIO INTERFACE TIMING ........................................................................................... 6

TYPICAL PERFORMANCE ................................................................................... 7

FREQUENCY RESPONSE .............................................................................................. 7

THD RATIO ...................................................................................................................... 7

APPLICATIONS INFORMATION .......................................................................... 8

RECOMMENDED EXTERNAL COMPONENTS .............................................................. 8

OPTIMISED SYSTEM RF DESIGN ................................................................................. 8

CONNECTION TO A WOLFSON AUDIO CODEC .......................................................... 8

RECOMMENDED PCB LAND PATTERNS ..................................................................... 9

PACKAGE DIMENSIONS (LGA) ......................................................................... 10

IMPORTANT NOTICE ......................................................................................... 11

ADDRESS: .......................................................................................................... 11

REVISION HISTORY ........................................................................................... 12

PTD, Rev 2.5, May 2013

WM7211

ABSOLUTE MAXIMUM RATINGS

Preliminary Technical Data

Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at

or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical

Characteristics at the test conditions specified.

ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible

to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage

of this device.

Wolfson tests its package types according to IPC/JEDEC J-STD-020 for Moisture Sensitivity to determine acceptable storage

conditions prior to surface mount assembly. These levels are:

MSL1 = unlimited floor life at <30C / 85% Relative Humidity. Not normally stored in moisture barrier bag.

MSL2 = out of bag storage for 1 year at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.

MSL2A = out of bag storage for 4 weeks at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.

MSL3 = out of bag storage for 168 hours at <30C / 60% Relative Humidity. Supplied in moisture barrier bag.

The Moisture Sensitivity Level for each package type is specified in Ordering Information.

CONDITION

Supply Voltage (VDD)

Voltage range digital inputs (LRSEL and CLK)

Operating temperature range, T

Storage temperature prior to soldering

Storage temperature after soldering

MIN

-0.3V

GND-0.3V

-40ºC

MAX

+4.2V

VDD+0.3V

+100ºC

30C max / 60% RH max

-40ºC

+100ºC

IMPORTANT ASSEMBLY GUIDELINES

Do not put a vacuum over the port hole of the microphone. Placing a vacuum over the port hole can damage the device. For

information on recommended pick and place vacuum point, refer to the package dimension drawing.

Do not board wash the microphone after a re-flow process. Board washing and the associated cleaning agents can damage

the device. Do not expose to ultrasonic cleaning methods.

Do not use vapour phase re-flow process. The vapour can damage the device.

Please refer to application note WAN0273 (MEMS MIC Assembly and Handling Guidelines) for further assembly and

handling guidelines.

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Analogue Supply Range

Ground

Clock Frequency

SYMBOL

VDD

GND

CLK

MIN

1.64

TYP

MAX

3.7

3.25

UNIT

MHz

PTD, Rev 2.5, May 2013

WM7211IMSE/V Related Products

	WM7211IMSE/V	WM7211IMSE/RV	WM7211IMS/RV	WM7211IMS/V
Description	Consumer Circuit, CMOS,	Consumer Circuit, CMOS,	Consumer Circuit, CMOS,	Consumer Circuit, CMOS,
Is it Rohs certified?	conform to	conform to	conform to	conform to
Maker	Wolfson Microelectronics plc (Cirrus Logic)	Wolfson Microelectronics plc (Cirrus Logic)	Wolfson Microelectronics plc (Cirrus Logic)	Wolfson Microelectronics plc (Cirrus Logic)
Reach Compliance Code	unknown	unknown	unknown	unknown
Commercial integrated circuit types	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT	CONSUMER CIRCUIT
Number of terminals	5	5	5	5
Maximum operating temperature	100 °C	100 °C	100 °C	100 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
Encapsulate equivalent code	LGA5(UNSPEC)	LGA5(UNSPEC)	LGA5(UNSPEC)	LGA5(UNSPEC)
power supply	1.8 V	1.8 V	1.8 V	1.8 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
surface mount	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Base Number Matches	1	1	1	1

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