ICS270
TRIPLE PLL FIELD PROGRAMMABLE VCXO CLOCK EPROM VCXO AND SYNTHESIZER
IDT™ / ICS™
TRIPLE PLL FIELD PROGRAMMABLE VCXO CLOCK 7
ICS270 REV F 051310
AC Electrical Characteristics
Unless stated otherwise, VDD = 3.3V ±5%, Ambient Temperature -40 to +85° C
Note 1: External crystal device must conform with Pullable Crystal Specifications listed on page 3.
Note 2: Measured with 15 pF load.
Note 3: Duty Cycle is configuration dependent. Most configurations are min 45% / max 55%.
Thermal Characteristics
Parameter Symbol Conditions Min. Typ. Max. Units
Input Frequency F
IN
Fundamental crystal 5 27 MHz
Output Frequency 0.314 200 MHz
Crystal Pullability F
P
0V< VIN < 3.3 V, Note 1 100 ppm
VCXO Gain VIN = VDD/2 +
1 V,
Note 1
110 ppm/V
Output Rise/Fall Time t
OF
80% to 20%, high drive,
Note 2
1.0 ns
Output Rise/Fall Time t
OF
80% to 20%, low drive,
Note 2
2.0 ns
Duty Cycle Note 3 40 49-51 60 %
Power-up time
PLL lock-time from
power-up
410ms
PDTS
goes high until
stable CLK output
0.6 2 ms
One Sigma Clock Period Jitter Configuration Dependent 50 ps
Maximum Absolute Jitter t
ja
Deviation from Mean,
Configuration Dependent
+200 ps
Pin-to-Pin Skew Low Skew Outputs -250 250 ps
Parameter Symbol Conditions Min. Typ. Max. Units
Thermal Resistance Junction to
Ambient
θ
JA
Still air 93 ° C/W
θ
JA
1 m/s air flow 78 ° C/W
θ
JA
3 m/s air flow 65 ° C/W
Thermal Resistance Junction to Case θ
JC
20 ° C/W
