ICS843SDN

FEMTOCLOCK™CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR

IDT™ / ICS™ 3.3V LVPECL CLOCK GENERATOR

3

ICS843SDNAG REV. A FEBRUARY 19, 2009

NOTE 1: Outputs termination with 50

Ω to V

Table 4. Crystal Characteristics

NOTE 1:Input frequency is limited to a range of 23.2MHz – 30MHz due to VCO range.

AC Electrical Characteristics

NOTE 1: Please refer to Phase Noise Plot.

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Output High Current; NOTE 1

µA

Output Low Current; NOTE 1

µA

Peak-to-Peak Output Voltage Swing

0.6

1.0

V

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency; NOTE 1

23.2

30

MHz

Equivalent Series Resistance (ESR)

40

Ω

Shunt Capacitance

7pF

Parameter

Symbol

Test Conditions

Minimum

Typical

Maximum

Units

Output Frequency

116

150

MHz

tjit(Ø)

RMS Phase Jitter, Random;

NOTE 1

120MHz,

(Integration Range: 12kHz – 20MHz)

0.81

ps

Output Rise/Fall Time

20% to 80%

100

600

ps

odc

Output Duty Cycle

47

53

%