ICS308 Datasheet, PDF (7/9 Pages) Integrated Circuit Systems – SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER

ICS308
SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER
SER PROG CLOCK SYNTHESIZER
AC Electrical Characteristics
VDD = 3.3 V±10%, Ambient Temperature -40 to +85° C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
Input Frequency
F_IN Fundamental crystal
5
Typ.
Max. Units
27 MHz
Output Frequency
Input Clock
VDD=3.3 V
2
50 MHz
0.25
200 MHz
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
t_OR 20% to 80%, Note 1
t_OF 80% to 20%, Note 1
Note 2
0.8
ns
0.8
ns
40 49-51 60
%
Power-up Time
STROBE goes high until
stable CLK out
3
10 ms
PDTS goes high until
stable CLK out
.2
2
ms
Maximum Output Jitter, short term
t_j
Reference Clock
±300
ps
Maximum Output Jitter, short term
t_j
All other clocks,
±200
ps
C_L=15 pF, configuration
dependent
Pin-to-Pin Skew
Low Skew Outputs
-250
250 ps
Note 1: Measured with 15 pF load.
Note 2: Duty Cycle is configuration dependent. Most configurations are min 45% / max 55%
Thermal Characteristics
Parameter
Symbol Conditions
Thermal Resistance Junction to
Ambient
θ_JA Still air
θ_JA 1 m/s air flow
θ_JA 3 m/s air flow
Thermal Resistance Junction to Case θ_JC
Min.
Typ.
135
93
78
60
Max.
Units
° C/W
° C/W
° C/W
° C/W
IDT™ / ICS™ SERIAL PROGRAMMABLE QUAD PLL VERSACLOCK SYNTHESIZER 7
ICS308
REV J 120507