WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 107

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

Preliminary Technical Data
PACKAGE DIAGRAM
w
FL: 32 PIN QFN PLASTIC PACKAGE 5
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, VARIATION VHHD-5.
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 APPLICATION NOTE WAN_0118 FOR FURTHER INFORMATION REGARDING PCB FOOTPRINTS AND QFN PACKAGE SOLDERING.
7. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE.
A3
C
Symbols
A
SEATING PLANE
REF:
24
17
bbb
aaa
ccc
A1
A3
D2
E2
W
A
D
G
H
b
E
e
L
T
25
A3
16
e
Exposed lead
15
Tolerances of Form and Position
0.80
0.18
3.30
3.30
0.30
MIN
b
BOTTOM VIEW
JEDEC, MO-220, VARIATION VHHD-5.
0
SIDE VIEW
D2
B
EXPOSED
GROUND
PADDLE
H
Half etch tie bar
0.20 REF
0.50 BSC
0.213
NOM
0.10
0.90
0.02
0.25
5.00
3.45
5.00
3.45
0.40
0.15
0.10
0.1
0.1
0.2
W
6
32
9
Dimensions (mm)
DETAIL 2
T
b
G
X
1
8
1
DETAIL 2
5
bbb
L
X
A1
MAX
M
1.00
0.05
0.30
3.55
3.55
0.50
DETAIL 1
A
0.9 mm BODY, 0.50 mm LEAD PITCH
C
E2
A
B
ccc
0.08
C
NOTE
C
1
2
2
5
2 X
4
2 X
INDEX AREA
(D/2 X E/2)
aaa
aaa
C
C
EXPOSED
GROUND
PADDLE
DETAIL 1
R = 0.3MM
TOP VIEW
D
DM033.D
PTD Rev 2.6 November 2005
E
WM8978
107