IDT / ICS 3.3V LVPECL FREQUENCY SYNTHESIZ" />
參數(shù)資料
型號(hào): SY100EP15VK4G TR
廠商: Micrel Inc
文件頁(yè)數(shù): 9/9頁(yè)
文件大?。?/td> 0K
描述: IC CLOCK BUFFER MUX 2:4 16-TSSOP
標(biāo)準(zhǔn)包裝: 1,000
系列: 100EP, Precision Edge®, ECL Pro™
類型: 扇出緩沖器(分配),多路復(fù)用器
電路數(shù): 1
比率 - 輸入:輸出: 2:4
差分 - 輸入:輸出: 是/是
輸入: HSTL,LVECL,LVPECL
輸出: LVECL,LVPECL
頻率 - 最大: 2.5GHz
電源電壓: 2.97 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 16-TSSOP
包裝: 帶卷 (TR)
其它名稱: SY100EP15VK4GTR
SY100EP15VK4GTR-ND
IDT / ICS 3.3V LVPECL FREQUENCY SYNTHESIZER
9
ICS843003AGI-01 REV A March 2, 2009
ICS843003I-01
FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
The ICS843003I-01 has been character ized with 18pF
parallel resonant crystals. The capacitor values shown in
Figure 3 below were determined using a 19.53125MHz or
Figure 3. CRYSTAL INPUt INTERFACE
25MHz, 18pF parallel resonant cr ystal and were chosen to
minimize the ppm error.
POWER SUPPLY FILTERING TECHNIQUES
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS843003I-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA, and VCCOx
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance, power
supply isolation is required.
Figure 2 illustrates how
a 10
resistor along with a 10F and a .01F bypass
capacitor should be connected to each V
CCA pin.
FIGURE 2. POWER SUPPLY FILTERING
10
V
CCA
10
F
.01
F
3.3V
.01
F
V
CC
C1
22p
X1
18pF Parallel Crystal
C2
22p
XTAL_OUT
XTAL_IN
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