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參數(shù)資料
型號: SM802105UMG
廠商: Micrel Inc
文件頁數(shù): 8/11頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER 2CH 24-QFN
產(chǎn)品培訓(xùn)模塊: High Bandwidth Product Overview
標(biāo)準(zhǔn)包裝: 100
系列: ClockWorks™, RotaryWave™
類型: 時鐘/頻率合成器,多路復(fù)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(yīng)商設(shè)備封裝: 24-QFN(4x4)
包裝: 管件
其它名稱: 576-3930
Micrel, Inc.
SM802105
April 2011
6
M9999-042111-A
hbwhelp@micrel.com or (408) 955-1690
AC Electrical Characteristics
(4, 5)
VDD = VDDO1/2 = 3.3V ±5% or 2.5V ±5%
VDD = 3.3V ±5%, VDDO1/2 = 3.3V ±5% or 2.5V ±5%
TA = 40°C to +85°C. RL = 50 to VDDO 2V
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
FOUT1
Output Frequency 1
FSEL=1
156.25
MHz
FOUT2
Output Frequency 2
FSEL=0
312.5
MHz
Ppm
Output ppm Variation
Crystal reference. Note 6
50
ppm
FREF
Reference Input Frequency
25
MHz
TR/TF
LVPECL Output Rise/Fall Time
20% – 80%
80
175
350
ps
ODC
Output Duty Cycle
48
50
52
%
TSKEW
Output-to-Output Skew
Within bank. Note 7
45
ps
TLOCK
PLL Lock Time
20
ms
Tjit()
RMS Phase Jitter
(8)
156.25MHz
Integration Range (1.875MHz – 20MHz)
Integration Range (12kHz – 20MHz)
312.5MHz
Integration Range (1.875MHz – 20MHz)
Integration Range (12kHz – 20MHz)
110
250
110
250
fs
Spurious Noise Components
6.25MHz using 156.25MHz
12.5MHz using 312.5MHz
-80
-85
dBc
Notes:
5.
All phase noise measurements were taken with an Agilent 5052B phase noise system.
6.
Crystal tolerance at room less than
± 15ppm, over temp less than ±20ppm.
7.
Defined as skew between outputs at the same supply voltage and with equal load conditions and same frequency; Measured at the output
differential crossing points.
8.
Measured using 25MHz crystal as the input reference source. If using an external reference input, use a low phase noise source. With an external
reference, the phase noise will follow the input source phase noise up to about 1MHz.
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