4x4 mm 20L QFN Recommended PCB Layout Symbol Parameter Dimensions Min Nom Max A P" />
參數(shù)資料
型號(hào): SI5010-B-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 10/20頁
文件大?。?/td> 0K
描述: IC CLOCK/DATA RECOVERY LP 20-QFN
標(biāo)準(zhǔn)包裝: 75
系列: DSPLL®
類型: 時(shí)鐘和數(shù)據(jù)恢復(fù)(CDR)
PLL:
主要目的: SONET/SDH,ATM 應(yīng)用
輸入: 時(shí)鐘
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 666MHz
電源電壓: 2.375 V ~ 2.625 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 20-QFN(4x4)
包裝: 管件
產(chǎn)品目錄頁面: 628 (CN2011-ZH PDF)
其它名稱: 336-1743-5
Si5010
18
Rev. 1.4
9.
4x4 mm 20L QFN Recommended PCB Layout
Symbol
Parameter
Dimensions
Min
Nom
Max
A
Pad Row/Column Width/Length
2.23
2.25
2.28
D
Thermal Pad Width/Height
2.03
2.08
2.13
e
Pad Pitch
0.50 BSC
G
Pad Row/Column Separation
2.43
2.46
2.48
R
Pad Radius
0.12 REF
X
Pad Width
0.23
0.25
0.28
Y
Pad Length
0.94 REF
Z
Pad Row/Column Extents
4.26
4.28
4.31
Notes:
1.
All dimensions listed are in millimeters (mm).
2.
The perimeter pads are to be Non-Solder Mask Defined (NSMD). Solder mask openings should be designed to leave 60-75 mm
separation between solder mask and pad metal, all the way around the pad.
3.
The center thermal pad is to be Solder Mask Defined (SMD).
4.
Thermal/Ground vias placed in the center pad should be no less than 0.2 mm (8 mil) diameter and tented from the top to prevent
solder from flowing into the via hole.
5.
The stencil aperture should match the pad size (1:1 ratio) for the perimeter pads. A 3x3 array of 0.5 mm square stencil openings, on a
0.65 mm pitch, should be used for the center thermal pad.
6.
A stencil thickness of 5 mil is recommended. The stencil should be laser cut and electropolished, with trapezoidal walls to facilitate
paste release.
7.
A “No-Clean”, Type 3 solder paste should be used for assembly. Nitrogen purge during reflow is recommended.
8.
Do not place any signal or power plane vias in these “keep out” regions.
9.
Suggest four 0.38 mm (15 mil) vias to the ground plane.
See Note 8
Gnd
P
in
Gnd Pin
Gnd
P
in
See Note 9
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