ICS844251BGI-14 REVISION A June 6, 2016

4

©2016 Integrated Device Technology, Inc.

ICS844251I-14 Data Sheet

FEMTOCLOCK™ CRYSTAL-TO-LVDS CLOCK GENERATOR

Table 4. Crystal Characteristics

AC Electrical Characteristics

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

NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is

mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium

has been reached under these conditions.

NOTE 1: Refer to Phase Noise Plots.

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

Mode of Oscillation

Fundamental

Frequency

23.2

30

MHz

Equivalent Series Resistance (ESR)

50



Shunt Capacitance

7pF

Symbol

Parameter

Test Conditions

Minimum

Typical

Maximum

Units

fOUT

Output Frequency

FREQ_SEL = 0

145

187.5

MHz

FREQ_SEL = 1

580

750

MHz

tjit(Ø)

RMS Phase Jitter, Random;

NOTE 1

156.25MHz,

Integration Range: 1.875MHz – 20MHz

0.54

ps

625MHz,

Integration Range: 1.875MHz – 20MHz

0.45

ps

tR / tF

Output Rise/Fall Time

20% to 80%

70

550

ps

odc

Output Duty Cycle

FREQ_SEL = 0

48

52

%

FREQ_SEL = 1

46

54

%