WM8731L WOLFSON [Wolfson Microelectronics plc], WM8731L Datasheet - Page 62

• Manufacturer Part Number: WM8731L
• Description: Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8731 / WM8731L
PACKAGE DIMENSIONS - QFN
w
NOTES:
1. DIMENSION b APPLIED TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP. DIMENSION L1 REPRESENTS TERMINAL PULL BACK FROM
2. FALLS WITHIN JEDEC, MO-220 WITH THE EXCEPTION OF D2, E2:
3. ALL DIMENSIONS ARE IN MILLIMETRES
4. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE.
5. SHAPE AND SIZE OF CORNER TIE BAR MAY VARY WITH PACKAGE TERMINAL COUNT. CORNER TIE BAR IS CONNECTED TO EXPOSED PAD INTERNALLY
6. REFER TO APPLICATION NOTE WAN_0118 FOR FURTHER INFORMATION REGARDING PCB FOOTPRINTS AND QFN PACKAGE SOLDERING.
Symbols
PACKAGE SIDE WALL. MAXIMUM OF 0.1mm IS ACCEPTABLE. WHERE TERMINAL PULL BACK EXISTS, ONLY UPPER HALF OF LEAD IS VISIBLE ON PACKAGE SIDE WALL DUE TO HALF
ETCHING OF LEADFRAME.
D2,E2: LARGER PAD SIZE CHOSEN WHICH IS JUST OUTSIDE JEDEC SPECIFICATION
FL: 28 PIN QFN PLASTIC PACKAGE 5
1
(A3)
REF:
bbb
aaa
ccc
A1
A3
D2
C
E2
L1
A
D
E
R
K
b
e
L
CORNER
TIE BAR
A
5
SEATING PLANE
15
21
Tolerances of Form and Position
b(min)/2
22
14
0.85
0.18
0.35
0.20
e
MIN
3.2
3.2
13
0
JEDEC, MO-220, VARIATION VKKD-2
BOTTOM VIEW
SIDE VIEW
D2
B
B
EXPOSED
GROUND
PADDLE
5.00 BSC
5.00 BSC
0.2 REF
0.5 BSC
D2/2
Dimensions (mm)
NOM
0.90
0.02
0.23
0.15
0.10
0.10
3.3
3.3
0.4
27
6
28
8
b
ccc
1
2
7
MAX
1.00
0.05
0.30
0.45
0.1
3.4
3.4
X
M
L
E2/2
A
C
5
A1
SEE DETAIL B
SEE DETAIL A
A
A
X
E2
B
0.9 mm BODY, 0.50 mm LEAD PITCH
ccc
0.08
NOTE
C
1
2
2
1
C
DETAIL B
INDEX AREA
(D/2 X E/2)
2 X
2 X
aaa
aaa
C
C
bbb
M
C
1
A
DETAIL A
B
28x b
TOP VIEW
EXPOSED
GROUND
PADDLE
D
DM023.F
CORNER
TIE BAR
L1
E
5
1
PD Rev 4.2 November 2005
0.210mm
Production Data
62