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GS4915 Datasheet, PDF (10/26 Pages) Gennum Corporation – ClockCleaner™ | |||
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2.3 AC Electrical Characteristics
GS4915 Data Sheet
Table 2-2: AC Electrical Characteristics
VDD = 1.8V ±5%, TA = 0ºC to 70ºC, unless otherwise shown
Parameter
Symbol Conditions
Input Jitter Tolerance
IJT
Output Jitter
â
Differential Output
â
Output Jitter
â
Single-ended Output
â
Output Duty Cycle
â
Differential Clock Output Rise / Fall Time â
Single-ended Clock Output Rise / Fall Time â
Input Clock Frequency
â
Output Clock Frequency
â
Lock Detect Time
tLOCKD
Unlock Detect Time
tUNLOCKD
Lock Time
Device Latency
tLOCK
â
Device Latency Difference
â
NOTES:
1. One UI refers to one cycle of the input CLK.
2. Assuming power up has already occured.
3. Difference between cleaning and bypass modes.
< 0.5Hz
0.5Hz to 1Hz
1Hz to 100Hz
> 100Hz
100kHz to 10MHz
Unfiltered
100kHz to 10MHz
Unfiltered
Differential output
Single-ended output
100Ω diff. load
10 pF load
â
â
Within 300ppm of
reference frequency
Within 700ppm of
reference frequency
â
Differential in,
Differential out,
SKEW_EN = LOW
Differential in,
Differential out,
SKEW_EN = HIGH
Single ended in,
single ended out,
SKEW_EN = LOW
Single ended in,
single ended out,
SKEW_EN = HIGH
â
Min
-10
-5
-1
-0.1
â
â
â
â
45
40
â
â
12
12
â
â
â
â
â
â
â
â
Typ
â
â
â
â
20
40
60
100
â
â
500
1200
â
â
â
â
â
1.2
1.2 -
Tout/4
3.5
3.5 -
Tout/4
750
Max
10
5
1
0.1
â
â
â
â
55
60
â
â
165
165
500
Units Notes
UI
1
UI
1
UI
1
UI
1
ps
â
ps
â
ps
â
ps
â
%
â
%
â
ps
â
ps
â
MHz
â
MHz
â
us
â
500
us
â
1
s
2
â
ns
â
â
ns
â
â
ns
â
â
ns
â
â
ps
3
39145 - 3 November 2007
10 of 26
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