Pre-Production WM7230
w
PP, Rev 3.1, January 2014
13
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.
17/06/13 2.5 JMacD
Package Diagram updated to DM089.G
08/11/13 3.1 JMacD
Updated to pre-production status.
08/11/13 3.1 JMacD
Package Diagram updated – port hole tolerance added.
11/11/13 3.1 JMacD
Updated CODEC reference to WM8280.
18/12/13 3.1 MR
Acoustic and Electrical Characteristics updated:
Polarity added
PSR updated
Note added
