IDT5V50009

SPREAD SPECTRUM CLOCK GENERATOR

SSCG

IDT™ SPREAD SPECTRUM CLOCK GENERATOR

5

IDT5V50009

REV C 040609

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V +10%, Ambient Temperature 0 to +70

° C

Thermal Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Clock Frequency

20

40

MHz

Output Clock Frequency

20

40

MHz

Clock Rise Time

trise1

SSCLK and REFCLK,

0.8 V to 2.0 V

0.75

ns

Clock Fall Time

tfall1

SSCLK and REFCLK,

0.8 V to 2.0 V

0.75

ns

Output Clock Duty Cycle

SSCLK and REFCLK

@1.65V

45

50

55

%

Cycle-to-Cycle Jitter

SSCLK,

Fin=27MHz,

Fout=27MHz

250

350

ps

Cycle-to-Cycle Jitter

REFCLK,

Fin=27MHz,

Fout=27MHz

275

375

ps

Modulation rate

Input/512

39

78

kHz

EMI Peak Frequency Reduction

8 to 16

dB

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

Still air

110

° C/W

1 m/s air flow

100

° C/W

3 m/s air flow

80

° C/W

Thermal Resistance Junction to Case

35

° C/W