hbwhelp@micrel.com or (408) 955-1690 Pin Description " />
參數(shù)資料
型號: SM802105UMG TR
廠商: Micrel Inc
文件頁數(shù): 5/11頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER 2CH 24-QFN
產(chǎn)品培訓模塊: High Bandwidth Product Overview
標準包裝: 1
系列: ClockWorks™, RotaryWave™
類型: 時鐘/頻率合成器,多路復用器
PLL:
主要目的: 以太網(wǎng)
輸入: LVCMOS,晶體
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 無/是
頻率 - 最大: 312.5MHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤
供應商設備封裝: 24-QFN(4x4)
包裝: 標準包裝
其它名稱: 576-3942-6
Micrel, Inc.
SM802105
April 2011
3
M9999-042111-A
hbwhelp@micrel.com or (408) 955-1690
Pin Description (Continued)
Pin Number
Pin Name
Pin Type
Pin Level
Pin Function
5, 11, 16, 18
TEST
Factory Test pins, Do not connect anything to these pins.
1
VDD
PWR
Core Power Supply
13, 14, 15
VSS
PWR
Core Power Supply Ground
17
VDDO1
PWR
Power Supply for Output Bank 1
21
VSSO1
PWR
Power Supply Ground for Output Bank 1
8
REF_IN
I, (SE)
LVCMOS
Reference Clock Input
9
XTAL_IN
I, (SE)
12pF crystal
Crystal Reference Input, no load caps needed.
See Fig. 5.
10
XTAL_OUT
O, (SE)
12pF crystal
Crystal Reference Output, no load caps needed.
See Fig. 5.
6
FSEL
I, (SE)
LVCMOS
Frequency Select, 1 = 156.25MHz, 0 = 312.5MHz,
45K pull-up
7
OE1
I, (SE)
LVCMOS
Output Enable, Q1 disables to tri-state,
0 = Disabled, 1 = Enabled, 45K pull-up
12
OE2
I, (SE)
LVCMOS
Output Enable, Q2 disables to tri-state,
0 = Disabled, 1 = Enabled, 45K pull-up
Application Information
Input Reference
When operating with a crystal input reference, do not apply a switching signal to REF_IN.
Crystal Layout
Keep the layers under the crystal as open as possible.
Do not place switching signals or noisy supplies under the crystal.
Truth Tables
PLL_BYPASS
XTAL_SEL
INPUT
OUTPUT
0
PLL
1
XTAL/REF_IN
0
REF_IN
1
XTAL
FSEL
Output Frequency
(MHz)
0
312.5
1
156.25
相關(guān)PDF資料
PDF描述
SM802108UMG IC SYNTEHSIZER 156.25MHZ 24QFN
SM802109UMG TR IC SYNTHESIZER QUAD 100MHZ 24QFN
SM840002KA TR IC CLK SYNTHESIZER LN 16-TSSOP
SM840004-11KA TR IC CLOCK SYNTHESIZER LN 20TSSOP
SM843001-106KA TR IC CLK SYNTHESIZER FIBRE 8-TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SM802108 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:ClockWorks? 10GbE & GbE (156.25MHz, 125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802108UMG 功能描述:時鐘合成器/抖動清除器 2 x 156.25MHz + 2 x 125MHz LVPECL RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
SM802108UMG TR 功能描述:時鐘合成器/抖動清除器 2 x 156.25MHz + 2 x 125MHz LVPECL RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
SM802108UMGR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:ClockWorks? 10GbE & GbE (156.25MHz, 125MHz) Ultra-Low Jitter, LVPECL Frequency Synthesizer
SM802109 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:ClockWorks? PCI-e Quad 100MHz Ultra-Low Jitter, HCSL Frequency Synthesizer