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ICS8430002 Datasheet(PDF) 17 Page - Integrated Device Technology

Part # ICS8430002
Description  High-Performance Fractional-N Frequency Synthesizer
PDF  27 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

ICS8430002 Datasheet(HTML) 17 Page - Integrated Device Technology

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ICS8430002AY REVISION C NOVEMBER 12, 2009
17
©2009 Integrated Device Technology, Inc.
ICS8430002 Data Sheet
HIGH-PERFORMANCE FRACTIONAL-N FREQUENCY SYNTHESIZER
LVPECL Clock Input Interface
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both VSWING and VOH must meet the VPP and
VCMR input requirements. Figures 6A to 6E show interface examples
for the PCLK/nPCLK input driven by the most common driver types.
The input interfaces suggested here are examples only. If the driver
is from another vendor, use their termination recommendation.
Please consult with the vendor of the driver component to confirm the
driver termination requirements.
Figure 6A. PCLK/nPCLK Input
Driven by an Open Collector CML Driver
Figure 6C. PCLK/nPCLK Input
Driven by a 3.3V LVPECL Driver
Figure 6E. PCLK/nPCLK Input
Driven by an SSTL Driver
Figure 6B. PCLK/nPCLK Input
Driven by a Built-In Pullup CML Driver
Figure 6D. PCLK/nPCLK Input Driven by
a 3.3V LVPECL Driver with AC Couple
PCLK
nPCLK
LVPECL
Input
CML
3.3V
Zo = 50
Ω
Zo = 50
Ω
3.3V
3.3V
R1
50
R2
50
R3
125
R4
125
R1
84
R2
84
3.3V
Zo = 50
Ω
Zo = 50
Ω
PCLK
nPCLK
3.3V
3.3V
LVPECL
LVPECL
Input
PCLK
nPCLK
LVPECL
Input
SSTL
2.5V
Zo = 60
Ω
Zo = 60
Ω
2.5V
3.3V
R1
120
R2
120
R3
120
R4
120
LVPECL
Input
R3
84
R4
84
R1
125
R2
125
R5
100 - 200
R6
100 - 200
PCLK
nPCLK
3.3V LVPECL
3.3V
Zo = 50
Ω
Zo = 50
Ω
3.3V
3.3V
LVPECL
Input
C1
C2



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