參數(shù)資料
型號(hào): ICS8732AYI-01LF
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘及定時(shí)
英文描述: 8732 SERIES, PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52
封裝: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026, LQFP-52
文件頁(yè)數(shù): 16/16頁(yè)
文件大?。?/td> 160K
代理商: ICS8732AYI-01LF
8732AYI-01
www.icst.com/products/hiperclocks.html
REV. A AUGUST 9, 2005
9
Integrated
Circuit
Systems, Inc.
ICS8732I-01
LOW VOLTAGE, LOW SKEW
3.3V LVPECL CLOCK GENERATOR
FIGURE 3C. HIPERCLOCKS CLK/NCLK INPUT DRIVEN BY
3.3V LVPECL DRIVER
FIGURE 3B. HIPERCLOCKS CLK/NCLK INPUT DRIVEN BY
3.3V LVPECL DRIVER
FIGURE 3D. HIPERCLOCKS CLK/NCLK INPUT DRIVEN BY
3.3V LVDS DRIVER
3.3V
R1
50
R3
50
Zo = 50 Ohm
LVPECL
Zo = 50 Ohm
HiPerClockS
CLK
nCLK
3.3V
Input
R2
50
Zo = 50 Ohm
Input
HiPerClockS
CLK
nCLK
3.3V
R3
125
R2
84
Zo = 50 Ohm
3.3V
R4
125
LVPECL
R1
84
3.3V
DIFFERENTIAL CLOCK INPUT INTERFACE
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL
and other differential signals. Both V
SWING and VOH must meet the
V
PP and VCMR input requirements. Figures 3A to 3D show inter-
face examples for the HiPerClockS CLK/nCLK input driven by
the most common driver types. The input interfaces suggested
here are examples only. Please consult with the vendor of the
FIGURE 3A. HIPERCLOCKS CLK/NCLK INPUT DRIVEN BY
ICS HIPERCLOCKS LVHSTL DRIVER
1.8V
R2
50
Input
LVHSTL Driver
ICS
HiPerClockS
R1
50
LVHSTL
3.3V
Zo = 50 Ohm
HiPerClockS
CLK
nCLK
Zo = 50 Ohm
R1
100
3.3V
LVDS_Driv er
Zo = 50 Ohm
Receiv er
CLK
nCLK
3.3V
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8732I-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA and VCCO
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
Ω
resistor along with a 10
μF and a .01μF bypass capacitor
should be connected to each V
CCA pin.
FIGURE 2. POWER SUPPLY FILTERING
10
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
POWER SUPPLY FILTERING TECHNIQUES
driver component to confirm the driver termination require-
ments. For example in Figure 3A, the input termination applies
for ICS HiPerClockS LVHSTL drivers. If you are using an
LVHSTL driver from another vendor, use their termination rec-
ommendation.
相關(guān)PDF資料
PDF描述
ICS8732AYI-01LFT 8732 SERIES, PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52
ICS87332AMI-01T 87332 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS87332AMI-01LFT 87332 SERIES, LOW SKEW CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS87339AG-01LF LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS87339AG-01LFT LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
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