WM8734SEFL Wolfson Microelectronics, WM8734SEFL Datasheet - Page 45

• Manufacturer Part Number: WM8734SEFL
• Description: Audio CODECs Stereo CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8734SEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8734
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
(A3)
1
REF:
bbb
ccc
aaa
A1
A3
D2
C
E2
L1
A
D
E
R
K
b
e
L
CORNER
TIE BAR
A
5
SEATING PLANE
21
15
Tolerances of Form and Position
b(min)/2
22
14
0.20
MIN
0.85
0.18
0.35
e
3.2
3.2
13
0
JEDEC, MO-220, VARIATION VHHD-1
BOTTOM VIEW
SIDE VIEW
D2
B
B
EXPOSED
GROUND
PADDLE
5.00 BSC
5.00 BSC
0.5 BSC
0.2 REF
D2/2
Dimensions (mm)
NOM
0.90
0.02
0.23
0.10
0.15
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
M
X
L
A
E2/2
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
1
2
2
C
DETAIL B
INDEX AREA
(D/2 X E/2)
2 X
2 X
aaa
aaa
C
C
bbb
M
C
1
A
B
DETAIL A
28x b
TOP VIEW
EXPOSED
GROUND
PADDLE
D
DM023.G
CORNER
TIE BAR
L1
PD, Rev 4.3, January 2009
E
5
1
0.210mm
Production Data
45