ICS8422002I-01

FEMTOCLOCKS™ CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER

PRELIMINARY

IDT™ / ICS™ LVHSTL FREQUENCY SYNTHESIZER

4

ICS8422002AGI-01 REV. C NOVEMBER 1, 2007

NOTE 1: Outputs termination with 50

Ω to ground.

NOTE 2: Defined with respect to output voltage swing at a given condition.

NOTE 1: Outputs termination with 50

Ω to ground.

NOTE 2: Defined with respect to output voltage swing at a given condition.

Table 4. Crystal Characteristics

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Input High Voltage

2

V

1.7

V

Input Low Voltage

-0.3

0.8

V

-0.3

0.7

V

Input

High Current

REF_CLK, MR, F_SEL[0:1],

nPLL_SEL, nXTAL_SEL

or 2.625V

150

µA

Input

Low Current

REF_CLK, MR, F_SEL[0:1],

nPLL_SEL, nXTAL_SEL

-5

µA

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Output High Current; NOTE 1

1.0

1.2

V

Output Low Current; NOTE 1

0

0.4

V

Output Crossover Voltage; NOTE 2

40

60

%

Peak-to-Peak Output Voltage Swing

0.6

1.1

V

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Output High Current; NOTE 1

1.0

1.2

V

Output Low Current; NOTE 1

0.235

V

Output Crossover Voltage; NOTE 2

40

60

%

Peak-to-Peak Output Voltage Swing

0.9

V

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency

22.4

25

27.2

MHz

Equivalent Series Resistance (ESR)

50

Ω

Shunt Capacitance

7pF

Drive Level

1mW