ICS84320AY-01LN IDT, Integrated Device Technology Inc, ICS84320AY-01LN Datasheet - Page 11

• 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

T
The clock layout topology shown below is a typical termi-
nation for LVPECL outputs. The two different layouts men-
tioned are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, ter-
minating resistors (DC current path to ground) or current
sources must be used for functionality. These outputs are
designed to drive 50Ω transmission lines. Matched imped-
84320AY-01
RTT =
ERMINATION FOR
((V
F
FOUT
OH
IGURE
+ V
OL
5A. LVPECL O
) / (V
1
LVPECL O
CC
Z
Z
– 2)) – 2
o
o
= 50Ω
= 50Ω
Z
o
UTPUT
50Ω
UTPUTS
T
ERMINATION
RTT
50Ω
V
CC
FIN
- 2V
www.idt.com
11
ance techniques should be used to maximize operating
frequency and minimize signal distortion. Figures 5A and
5B show two different layouts which are recommended only
as guidelines. Other suitable clock layouts may exist and it
would be recommended that the board designers simulate
to guarantee compatibility across all printed circuit and clock
component process variations.
780MH
FOUT
F
IGURE
LVPECL F
Z
, C
5B. LVPECL O
RYSTAL
Z
Z
o
o
= 50Ω
= 50Ω
REQUENCY
-
125Ω
TO
84Ω
-3.3V D
ICS84320-01
UTPUT
3.3V
T
125Ω
84Ω
ERMINATION
S
IFFERENTIAL
YNTHESIZER
REV. D JULY 26, 2010
FIN