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參數(shù)資料
型號(hào): SM840001KA
廠商: Micrel Inc
文件頁數(shù): 6/8頁
文件大?。?/td> 0K
描述: IC CLOCK SYNTHESIZER 8TSSOP
產(chǎn)品培訓(xùn)模塊: High Bandwidth Product Overview
標(biāo)準(zhǔn)包裝: 150
系列: RotaryWave™
類型: 時(shí)鐘/頻率合成器,多路復(fù)用器
PLL:
輸入: 晶體
輸出: LVCMOS,LVTTL
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 無/無
頻率 - 最大: 226.66MHz
除法器/乘法器: 是/無
電源電壓: 2.375 V ~ 3.465 V
工作溫度: -40°C ~ 75°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 8-TSSOP
包裝: 管件
其它名稱: 576-3695-5
SM840001KA-ND
Micrel, Inc.
SM840001
March 2010
6
M9999-031810-B
hbwhelp@micrel.com or (408) 955-1690
Power Supply Filtering
The SM840001 provides separate power supply pins to
isolate any high switching noise from outputs to internal
core blocks. VDD and VDDA should be individually
connected to the power plane through vias. Bypass
capacitors should be used for each pin. Figure 2
illustrates how the power supply filter for 3.3V and 2.5V
is configured.
Figure 2.
Crystal Loading
Crystal Recommendations
This device requires a parallel resonance crystal.
Substituting a series resonance crystal will cause this
device to operate at the wrong frequency and violate the
ppm specifications.
To achieve low ppm error, the total capacitance of the
crystal must be considered in order to calculate
appropriate capacitive loading (CL).
Load Capacitance at each side: Trim Capacitance = Ct =
(2*CL-(Cb + Cd))
CL: Crystal load capacitance. Defined by manufacturer
Ct: External trim capacitors. (Trimmed CL Load
capacitance to get the right ppm)
Cb: Board capacitance (vias, traces, etc.)
Cd: Internal capacitance of the device (lead frame, bond
wires, pin, etc.)
Equivalent Series
Resistance (ESR)
Max.
Cut
Load
Cap.
Shunt
Cap.
Max.
Drive
Max.
50
AT
18pF
7pF
0.1m
W
Crystal Input Interface
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SM840001KA TR 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 106 & 212 MHz Ultra Low Clock Synthesizer 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
SM840001KATR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:106.25MHz Ultra-Low Jitter Clock Synthesizer
SM840002 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:ClockWorks? Dual 10-Gigabit/Gigabit Ethernet 62.5MHz, 125MHz, or 156.25MHz
SM840002KA 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 Low Noise 125/156.25MHz GbE/10GbE 2 LVCMOS Output Clk Syn 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
SM840002KA TR 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 Low Noise 125/156.25MHz GbE/10GbE 2 LVCMOS Output Clk Syn 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