參數(shù)資料
型號(hào)： ICS8430DY-111T
元件分類(lèi)： 時(shí)鐘及定時(shí)
英文描述： 8430 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封裝： 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32
文件頁(yè)數(shù)： 17/17頁(yè)
文件大小： 178K
代理商： ICS8430DY-111T
8430DY-111
www.icst.com/products/hiperclocks.html
REV. F APRIL 10, 2006
9
PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS8430-111
700MHZ, LOW JITTER
DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8430-111 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 10μF and a .01μF bypass
capacitor should be connected to each V
CCA pin.
POWER SUPPLY FILTERING TECHNIQUES
FIGURE 2. POWER SUPPLY FILTERING
10
Ω
V
CCA
10
μF
.01
μF
3.3V
.01
μF
V
CC
INPUTS:
TEST_CLK INPUT:
For applications not requiring the use of the test clock, it can
be left floating. Though not required, but for additional
protection, a 1k
Ω resistor can be tied from the TEST_CLK to
ground.
CLK/nCLK INPUT:
For applications not requiring the use of the differential input,
both CLK and nCLK can be left floating. Though not required,
but for additional protection, a 1k
Ω resistor can be tied from
CLK to ground.
LVCMOS CONTROL PINS:
All control pins have internal pull-ups or 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
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.
相關(guān)PDF資料
PDF描述
ICS8430DY-11LF 700 MHz, OTHER CLOCK GENERATOR, PQFP32
ICS8430DYI-01T 500 MHz, OTHER CLOCK GENERATOR, PQFP32
ICS8430DYI-11 700 MHz, OTHER CLOCK GENERATOR, PQFP32
ICS8430DYI-11LFT 700 MHz, OTHER CLOCK GENERATOR, PQFP32
ICS8430DYI-11LF 700 MHz, OTHER CLOCK GENERATOR, PQFP32
相關(guān)代理商/技術(shù)參數(shù)
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