ICS84320AY-01LN IDT, Integrated Device Technology Inc, ICS84320AY-01LN Datasheet - Page 9

• Manufacturer Part Number: ICS84320AY-01LN
• Description: IC SYNTHESIZER GP LVPECL 32-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Frequency Synthesizerr

Specifications of ICS84320AY-01LN

• Pll: Yes with Bypass
• Input: Crystal
• Output: LVPECL
• Number Of Circuits: 1
• Ratio - Input:output: 1:2
• Differential - Input:output: No/Yes
• Frequency - Max: 780MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Frequency-max: 780MHz
• Number Of Elements: 1
• Supply Current: 155mA
• Pll Input Freq (min): 14MHz
• Pll Input Freq (max): 40MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Package Type: TQFP
• Output Frequency Range: 77.5 to 780MHz
• Operating Supply Voltage (min): 2.915/3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Commercial
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 800-1140; 84320AY-01LN

P
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS84320-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
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 24Ω resistor along with a 10μF and a .01μF bypass
capacitor should be connected to each V
resistor can also be replaced by a ferrite bead.
R
I
C
For applications not requiring the use of the crystal oscillator
input, both XTAL_IN and XTAL_OUT can be left floating.
Though not required, but for additional protection, a 1kΩ
resistor can be tied from XTAL_IN to ground.
TEST_CLK I
For applications not requiring the use of the test clock, it can
be left floating. Though not required, but for additional
protection, a 1kΩ resistor can be tied from the TEST_CLK to
ground.
LVCMOS C
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1kΩ resistor can be used.
84320AY-01
NPUTS
RYSTAL
OWER
ECOMMENDATIONS FOR
:
I
NPUTS
S
UPPLY
ONTROL
NPUT
F
P
INS
ILTERING
U
NUSED
T
ECHNIQUES
I
NPUT AND
A
PPLICATION
CCA
CC
, V
pin. The 24Ω
CCA
O
, and V
UTPUT
www.idt.com
CCO
P
INS
9
I
NFORMATION
O
LVPECL O
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.
780MH
UTPUTS
:
UTPUTS
LVPECL F
F
Z
IGURE
, C
RYSTAL
2. P
V
V
CCA
CC
OWER
REQUENCY
-
TO
.01μF
.01μF
S
UPPLY
ICS84320-01
-3.3V D
3.3V
24Ω
F
10μF
ILTERING
S
IFFERENTIAL
YNTHESIZER
REV. D JULY 26, 2010