ICS843SDN

FEMTOCLOCK™CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR

IDT™ / ICS™ 3.3V LVPECL CLOCK GENERATOR

3

ICS843SDNAG REV. A

NOVEMBER 13, 2012

Table 4. Crystal Characteristics

NOTE: It is not recommended to overdrive the crystal input with an external clock.

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

AC Electrical Characteristics

Table 5. AC Characteristics, VCC = 3.3V ± 5%, VEE = 0V, TA = 0°C to 70°C

NOTE 1: Please refer to Phase Noise Plot.

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency; NOTE 1

23.2

30

MHz

Equivalent Series Resistance (ESR)

40



Shunt Capacitance

7pF

Parameter

Symbol

Test Conditions

Minimum

Typical

Maximum

Units

fOUT

Output Frequency

116

150

MHz

tjit(Ø)

RMS Phase Jitter, Random;

NOTE 1

120MHz,

(Integration Range: 12kHz – 20MHz)

0.81

ps

tR / tF

Output Rise/Fall Time

20% to 80%

100

600

ps

odc

Output Duty Cycle

47

53

%