ics8430ay62l Integrated Device Technology, ics8430ay62l Datasheet - Page 11

• Manufacturer Part Number: ics8430ay62l
• Description: Ics8430-62 500mhz, Crystal-to-3.3v, 2.5v Differential Lvpecl Frequency Synthesizer
• Manufacturer: Integrated Device Technology

ICS8430-62 Datasheet
Parameter Measurement Information, continued
Output Rise/Fall Time
Application Information
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter performance,
power supply isolation is required. The ICS8430-62 provides
separate power supplies to isolate any high frequency switching
noise from the outputs to the internal PLL. V
should be individually connected to the power supply plane through
vias, and 0.01µF bypass capacitors should be used for each pin.
Figure 2 illustrates this for a generic V
V
bypass capacitor be connected to the V
also be replaced by a ferrite bead.
ICS8430AY-62 REVISION A JULY 2, 2009
CCA
nFOUTx
FOUTx
requires that an additional 10Ω resistor along with a 10µF
20%
80%
t
R
CC
CCA
pin and also shows that
pin. The 10Ω resistor can
80%
CC,
t
F
V
CCA
and V
20%
V
SW I N G
CCO
11
500MHz CRYSTAL-TO-3.3V, 2.5V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
Figure 2. Power Supply Filtering
V
V
CCA
CC
.01µF
.01µF
©2009 Integrated Device Technology, Inc.
3.3V
10Ω
10µF