wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 93

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
PACKAGE DIAGRAM
FL: 28 PIN QFN PLASTIC PACKAGE 4
A3
SEATING PLANE
C
NOTES:
1. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.15 mm AND 0.30 mm FROM TERMINAL TIP.
2. FALLS WITHIN JEDEC, MO-220.
3. ALL DIMENSIONS ARE IN MILLIMETRES.
4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JEDEC 95-1 SPP-002.
5. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.
6. REFER TO APPLICATIONS NOTE WAN_0118 FOR FURTHER INFORMATION REGARDING PCB FOOTPRINTS AND QFN PACKAGE SOLDERING.
7. DEPENDING ON THE METHOD OF LEAD TERMINATION AT THE EDGE OF THE PACKAGE, PULL BACK (L1) MAY BE PRESENT.
8. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE.
0.226 Ref.
Symbols
A
REF:
bbb
aaa
ccc
A1
A3
D2
E2
15
21
A
D
G
L
b
E
e
A3
14
22
Exposed lead
BOTTOM VIEW
Tolerances of Form and Position
e
0.175
0.375
MIN
0.70
3.95
2.55
3.95
2.55
SIDE VIEW
b
EXPOSED
GROUND
PADDLE
0
D2
6
G
b
0.203 REF
0.45 BSC
28
NOM
0.560
0.425
8
0.15
0.10
0.10
0.75
0.02
0.18
4.00
4.00
JEDEC, MO-220
2.6
2.6
1
7
1
bbb
Dimensions (mm)
DETAIL 2
DETAIL 2
A1
M
X
A
C
E2
DETAIL 1
4
A
SEE DETAIL 2
0.185
0.475
X
B
MAX
0.80
0.05
4.05
2.65
4.05
2.65
0.75 mm BODY, 0.45 mm LEAD PITCH
ccc
0.08
C
C
5
NOTE
1
2
2
2 X
4
DETAIL 1
2 X
INDEX AREA
(D/2 X E/2)
aaa
0.30mm
aaa
C
EXPOSED
GROUND
PADDLE
C
45
degrees
TOP VIEW
D
DETAIL 2
Datum
R
L
E
DM042.B
e
Terminal
tip
e/2
PD, Rev 4.0, August 2008
WM8941
93