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ICS84325EM

CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

TABLE 4. CRYSTAL CHARACTERISTICS

Parameter

Mode of Oscillation

Frequency

Equivalent Series Resistance (ESR)

Shunt Capacitance

ICS84325

CRYSTAL-TO-3.3V LVPECL

FREQUENCY SYNTHESIZER WITH FANOUT BUFFER

Test Conditions

Minimum Typical Maximum

Fundamental

25

25.5

50

7

Units

MHz

Ω

pF

TABLE

5.

AC

CHARACTERISTICS,

V

CC

=

V

CCA

=

V

CCO

=

3.3V±5%,

TA

=

0°C

TO

70°C

Symbol Parameter

Test Conditions

Minimum Typical Maximum

FOUT

tsk(o)

Output Frequency

Output Skew; NOTE 1, 2

106.25

250

60

tR / tF

Output Rise/Fall Time

20% to 80%

300

800

fOUT = 106.25MHz

48

52

fOUT = 125MHz

46

54

odc

Output Duty Cycle

fOUT = 212.5MHz

43

57

fOUT = 250MHz

40

60

tLOCK

PLL Lock Time

1

See Parameter Measurement Information section.

NOTE 1: Defined as skew between outputs at the same supply voltage and with equal load conditions.

Measured at V /2.

CCO

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

Units

MHz

ps

ps

%

%

%

%

ms

84325EM

www.icst.com/products/hiperclocks.html

4

REV. B OCTOBER 11, 2004

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