IDT
™
/ ICS
™
3.3V LVPECL FREQUENCY SYNTHESIZER 8 ICS8432BY-51 REV. F MAY 13, 2008
ICS8432-51
700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
Table 8. Common SANs Application Frequencies
Table 9. Configuration Details for SANs Applications
APPLICATION INFORMATION
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter perfor-
mance, power supply isolation is required. The ICS8432-51 pro-
vides separate power supplies to isolate any high switching noise
from the outputs to the internal PLL. V
CC
, V
CCA
and V
CCO
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
CC
pin and also shows that
V
CCA
requires that an additional 10Ω resistor along with a 10µF
bypass capacitor be connected to the V
CCA
pin.
FIGURE 2. POWER SUPPLY FILTERING
10Ω
V
CCA
10 μF
.01μF
3.3V
.01μF
V
CC
ygolonhceTtcennocretnIetaRkcolC
SEDRESotycneuqerFecnerefeR
)zHM(
ycneuqerFlatsyrC
)zHM(
tenrehtEtibagiGzHG52
.152.651,052,52152135.91,52
lennahCerbiF
zHG5260.11CF
zHG0521.22CF
5218.231,521.35,52.60152,5265106.61
dnabin
ifnIzHG5.2052,52152
POWER SUPPLY FILTERING T ECHNIQUES
STORAGE AREA NETWORKS
A variety of technologies are used for interconnection of the
elements within a SAN. The tables below lists the common
frequencies used as well as the settings for the ICS8432-51 to
generate the appropriate frequency.
tcennocretnI
ygolonhceT
ycneuqerFlatsyrC
)zHM(
15-2348SCI
ycneuqerFtuptuO
SEDRESot
)zHM(
15-2348SCI
sgnitteSN&
M
8M7M6M5M4M3M2M1M0M1N0N
tenrehtEtibagiG
52521 000010100 10
52052 0000101000 1
5252.651 00001100110
52135.9152.651 000100000 10
1lennahCrebiF
52521.35 00001000111
5252.601 00001000110
2lennahCrebiF526510
6.615218.231 00010000010
dnabinifnI
52521 000010100 10
52052 0000101000 1
