SI4720-B20-GMR Datasheet, PDF (44/48 Pages) Silicon Laboratories – BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

Si4720/21-B20
10. Package Outline: Si4720/21-GM
Figure 26 illustrates the package details for the Si4720. Table 22 lists the values for the dimensions shown in the
illustration.
Figure 26. 20-Pin Quad Flat No-Lead (QFN)
Table 22. Package Dimensions
Symbol
Millimeters
Symbol
Min
Nom
Max
A
0.50
0.55
0.60
f
A1
0.00
0.02
0.05
L
b
0.20
0.25
0.30
L1
c
0.27
0.32
0.37
aaa
D
3.00 BSC
bbb
D2
1.65
1.70
1.75
ccc
e
0.50 BSC
ddd
E
3.00 BSC
eee
E2
1.65
1.70
1.75
Notes:
1. All dimensions are shown in millimeters (mm) unless otherwise noted.
2. Dimensioning and tolerancing per ANSI Y14.5M-1994.
Min
0.35
0.00
—
—
—
—
—
Millimeters
Nom
2.53 BSC
0.40
—
—
—
—
—
—
Max
0.45
0.10
0.05
0.05
0.08
0.10
0.10
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