GS4915 Data Sheet
2.3 AC Electrical Characteristics
Table 2-2: AC Electrical Characteristics
VDD = 1.8V ±5%, TA = 0ºC to 70ºC, unless otherwise shown
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Notes
Input Jitter Tolerance
IJT
< 0.5Hz
-10
-5
-1
-0.1
–
–
–
10
5
UI
UI
1
1
1
1
–
–
–
–
–
–
–
–
–
–
–
0.5Hz to 1Hz
1Hz to 100Hz
> 100Hz
–
1
UI
–
0.1
–
UI
Output Jitter
–
–
–
–
–
100kHz to 10MHz
Unfiltered
20
40
60
100
–
ps
Differential Output
–
–
ps
Output Jitter
100kHz to 10MHz
Unfiltered
–
–
ps
Single-ended Output
–
–
ps
Output Duty Cycle
Differential output
Single-ended output
100Ω diff. load
10 pF load
–
45
40
–
55
60
–
%
–
%
Differential Clock Output Rise / Fall Time
Single-ended Clock Output Rise / Fall Time
Input Clock Frequency
–
500
1200
–
ps
–
–
–
ps
–
12
12
–
165
165
500
MHz
MHz
us
Output Clock Frequency
–
–
–
Lock Detect Time
tLOCKD
Within 300ppm of
–
reference frequency
Unlock Detect Time
tUNLOCKD
Within 700ppm of
–
–
500
us
–
reference frequency
Lock Time
tLOCK
–
–
–
–
–
1
–
s
2
–
Device Latency
Differential in,
1.2
ns
Differential out,
SKEW_EN = LOW
Differential in,
Differential out,
SKEW_EN = HIGH
–
–
–
–
1.2 -
–
–
–
–
ns
ns
ns
ps
–
–
–
3
Tout/4
Single ended in,
single ended out,
SKEW_EN = LOW
3.5
Single ended in,
single ended out,
SKEW_EN = HIGH
3.5 -
Tout/4
Device Latency Difference
NOTES:
–
–
750
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.
39145 - 3 November 2007
10 of 26
GENNUM [ GENNUM CORPORATION ]
