ICS661

PRECISION AUDIO CLOCK SOURCE

CLOCK SYNTHESIZER

IDT™ / ICS™ PRECISION AUDIO CLOCK SOURCE

5

ICS661

REV F 051310

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±10%, Ambient Temperature -40 to +85

° C

Thermal Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Crystal Frequency

27

28

MHz

Output Clock Rise Time

20% to 80%, 15 pF load

1.5

ns

Output Clock Fall Time

80% to 20%, 15 pF load

1.5

ns

Output Duty Cycle

At VDD/2, 15 pF load

45

49 to 51

55

%

Jitter, Short term

Reference clock off

175

ps p-p

Jitter, Short term

Reference clock on

175

ps p-p

Jitter, Long term

Reference clock off; 10

us delay

300

ps p-p

Jitter, Long term

Reference clock on; 10

us delay

300

ps p-p

Single Sideband Phase

Noise

Reference clock off; 10

kHz offset

-110

dBc

Single Sideband Phase

Noise

Reference clock on; 10

kHz offset

-110

dBc

Actual Mean Frequency

Error versus Target

0ppm

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

Still air

78

° C/W

1 m/s air flow

70

° C/W

3 m/s air flow

68

° C/W

Thermal Resistance Junction to Case

37

° C/W