WM7230

Preliminary Technical Data

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PTD, Rev 2.4, October 2012

12

REVISION HISTORY

DATE

REV

ORIGINATOR

CHANGES

20/10/10

1.0/2.0

PH

Front page description and features re-worded.

Description of LRSEL pin updated.

Electrical Characteristics re-ordered, and terminology updated.

Microphone interface timing drawing and descriptions updated.

Frequency response graph added.

Illustration of recommended external components replaced with text.

Connection to Wolfson CODEC text and illustration updated.

Recommended PCB land patterns moved to Applications Information.

26/10/10

1.0/2.0

JMacD

Package Diagram DM089.D added

23/11/10

CST

Specification of FSR corrected.

Specification for THD corrected

Time to data valid changed to minimum

Grammatical errors

28/01/11

2.0

JMacD

Reel quantity added to order information

01/05/11

2.1

JMacD

Updated the LRSEL pin description , Timing diagram and notes for the rising and

falling clock edges.

Sleep mode current updated to 2uA

Updated the reel quantity

Updated the start up time

Updated the new freq response and THD curves

Updated +3dB frequency cut off

Updated VDD to 1.64V

06/09/11

2.1

JMacD

Package Diagram updated to DM089.E.

References and dimension letters changed to be consistent with all mems

package diagrams.

Lid dimensions updated.

Swapped dimensions L and E.

Added marking area boundary

16/12/11

2.2

KC

Introduced E variant with sensitivity +/-1dB

Added E variant ordering info

Added voltage range digital input

Updated the CODEC to WM8994

Added Reference to WAN_0273

22/06/12

2.3

MR/JMacD

Dynamic Range added, p5

Active mode current changed to 700uA, p1 and p5

CLK cycle time min and max updated, p6

Package Diagram updated to DM089F

08/10/12

2.4

JMacD

Optimised System RF Design added.