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Cypress Semiconductor - Spread Aware/ Frequency Multiplier and Zero Delay Buffer

Numéro de référence W170
Description Spread Aware/ Frequency Multiplier and Zero Delay Buffer
Fabricant Cypress Semiconductor 
Logo Cypress Semiconductor 





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W170 fiche technique
W170-01
Spread Aware™, Frequency Multiplier and Zero Delay Buffer
Features
• Spread Aware™—designed to work with SSFTG
reference signals
• Two outputs
• Configuration options allow various multiplication of
the reference frequency, refer to Table 1 to determine
the specific option which meets your multiplication
needs
• Available in 8-pin SOIC package
Key Specifications
Operating Voltage: ...........................3.3V±5% or 5.0V± 10%
Operating Range: .......................20 MHz < fOUT1 < 133 MHz
Absolute Jitter: ......................................................... ±500 ps
Output to Output Skew: .............................................. 250 ps
Propagation Delay: ................................................... ±350 ps
Propagation delay is affected by input rise time.
Table 1. Configuration Options
FBIN
FS0 FS1
OUT1
OUT1
0
0 2 X REF
OUT1
1
0 4 X REF
OUT1
0
1
REF
OUT1
1
1 8 X REF
OUT2
0
0 4 X REF
OUT2
1
0 8 X REF
OUT2
0
1 2 X REF
OUT2
1
1 16 X REF
OUT2
REF
2 X REF
REF/2
4 X REF
2 X REF
4 X REF
REF
8 X REF
Block Diagram
Pin Configuration
FBIN
FS0
÷Q
FS1
External feedback connection to
OUT1 or OUT2, not both
FBIN
IN
GND
FS0
1
2
3
4
8 OUT2
7 VDD
6 OUT1
5 FS1
IN
Reference
Input
Phase
Detector
Charge
Pump
Loop
Filter
Output
Buffer
VCO
÷2
Output
Buffer
OUT1
OUT2
Spread Aware is a trademark of Cypress Semiconductor Corporation.
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
September 28, 1999, rev. **

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