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参数资料
| 型号： | ICS84330AY-03 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBA, LQFP-32 |
| 文件页数： | 3/21页 |
| 文件大小： | 481K |
| 代理商： | ICS84330AY-03 |
84330AY-03
www.icst.com/products/hiperclocks.html
REV. A FEBRUARY 2, 2006
11
Integrated
Circuit
Systems, Inc.
ICS84330-03
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V
DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS84330-03 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC and VCCA
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 10μF and a .01μF bypass
capacitor should be connected to each V
CCA pin. The 10Ω
resistor can also be replaced by a ferrite bead.
FIGURE 2. POWER SUPPLY FILTERING
10
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
POWER SUPPLY FILTERING TECHNIQUES
INPUTS:
SELECT PINS:
All select pins have internal pull-ups and pull-downs;
additional resistance is not required but can be added for
additional protection. A 1k
Ω resistor can be used.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
CRYSTAL INPUT INTERFACE
The ICS84330-03 has been characterized with 18pF paral-
lel resonant crystals. The capacitor values, C1 and C2,
shown in Figure 3 below were determined using an 18pF
parallel resonant crystal and were chosen to minimize the
ppm error. These same capacitor values will tune any 18pF
Figure 3. CRYSTAL INPUt INTERFACE
parallel resonant crystal over the frequency range and other
parameters specified in this data sheet. The optimum C1
and C2 values can be slightly adjusted for different board
layouts.
OUTPUTS:
LVPECL OUTPUT
All unused LVPECL outputs can be left floating. We
recommend that there is no trace attached. Both sides of the
differential output pair should either be left floating or
terminated.
ICS84332
XTAL_IN
XTAL_OUT
X1
18pF Parallel Cry stal
C2
22p
C1
22p
ICS84330-03
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
TSD
IDT / ICS 700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS84330-03
11
相关PDF资料 |
PDF描述 |
|---|---|
| ICS84330BV | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84330BVLF | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84330BY | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS84330CM-01LF | 700 MHz, OTHER CLOCK GENERATOR, PDSO28 |
| ICS84330CVI | 720 MHz, OTHER CLOCK GENERATOR, PQCC28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84330AY-03LF | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84330AY-03LFT | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84330AY-03T | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84330BV | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84330BVT | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
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