ICS44002AI01 datasheet(4/14 Pages) IDT

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ICS844002I-01

FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER

IDT™ / ICS™ LVDS FREQUENCY SYNTHESIZER

ICS844002AGI-01 REV. C SEPTEMBER 28, 2007

Table 3C. LVDS DC Characteristics, VDD = VDDA = VDDO = 2.5V ± 5%, TA = -40°C to 85°C

Table 4. Crystal Characteristics

AC Electrical Characteristics

Table 5. AC Characteristics, VDD = VDDA = VDDO = 2.5V ± 5%, TA = -40°C to 85°C

NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions. Measured at VDDO/2.

NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.

NOTE 3: Please refer to the Phase Noise Plot.

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

VOD

Differential Output Voltage

240

550

∆V

VOD Magnitude Change

VOS

Offset Voltage

0.7

1.1

1.5

∆V

VOS Magnitude Change

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency

22.4

27.2

MHz

Equivalent Series Resistance (ESR)

Ω

Shunt Capacitance

7pF

Drive Level

1mW

Parameter

Symbol

Test Conditions

Minimum

Typical

Maximum

Units

fOUT

Output Frequency

FSEL[1:0] = 00

140

170

MHz

FSEL[1:0] = 01

112

136

MHz

FSEL[1:0] = 10

MHz

tsk(o)

Output Skew; NOTE 1, 2

tjit(Ø)

RMS Phase Jitter, (Random);

NOTE 3

156.25MHz, (1.875MHz – 20MHz)

0.41

125MHz, (1.875MHz – 20MHz)

0.44

62.5MHz, (1.875MHz – 20MHz)

0.47

tR / tF

Output Rise/Fall Time

20% to 80%

250

550

odc

Output Duty Cycle

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