參數(shù)資料
型號: LTC6945IUFD#TRPBF
廠商: Linear Technology
文件頁數(shù): 20/28頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER INTEGER N 28QFN
軟件下載: PLLWizard™
PLLWizard™, with .NET 2.0 installer
標(biāo)準(zhǔn)包裝: 2,500
類型: *
PLL:
輸入: 時鐘
輸出: 時鐘
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 6GHz
除法器/乘法器: 是/無
電源電壓: 3.15 V ~ 5.25 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-QFN(4x5)
包裝: 帶卷 (TR)
LTC6945
27
6945f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
UFD Package
28-Lead Plastic QFN (4mm
× 5mm)
(Reference LTC DWG # 05-08-1712 Rev B)
4.00
0.10
(2 SIDES)
2.50 REF
5.00
0.10
(2 SIDES)
NOTE:
1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WXXX-X).
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1
TOP MARK
(NOTE 6)
0.40
0.10
27
28
1
2
BOTTOM VIEW—EXPOSED PAD
3.50 REF
0.75
0.05
R = 0.115
TYP
R = 0.05
TYP
PIN 1 NOTCH
R = 0.20 OR 0.35
45 CHAMFER
0.25
0.05
0.50 BSC
0.200 REF
0.00 – 0.05
(UFD28) QFN 0506 REV B
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
0.70 0.05
0.25 0.05
0.50 BSC
2.50 REF
3.50 REF
4.10
0.05
5.50
0.05
2.65
0.05
3.10
0.05
4.50
0.05
PACKAGE OUTLINE
2.65
0.10
3.65
0.10
3.65
0.05
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
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