ICS280

TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER

EPROM CLOCK SYNTHESIZER

IDT® TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER

6

ICS280

REV G 030212

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±5%, Ambient Temperature -40 to +85

° C

Note 1: Measured with 15 pF load.

Note 2: Duty Cycle is configuration dependent. Most configurations are min 45% / max 55%.

Thermal Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Frequency

Fundamental crystal

5

27

MHz

Clock Input

3

166

MHz

Output Frequency

0.314

200

MHz

Output Rise/Fall Time

80% to 20%, high drive,

Note 1

1.0

ns

Output Rise/Fall Time

80% to 20%, low drive,

Note 1

2.0

ns

Duty Cycle

Note 2

40

49-51

60

%

Output Frequency Synthesis Error

Configuration Dependent

TBD

ppm

Power-up Time

PLL lock-time from

power-up

410

ms

PDTS goes high until

stable CLK output,

Spread Spectrum Off

0.2

2

ms

PDTS goes high until

stable CLK output,

Spread Spectrum On

47

ms

PDTS goes high until

spread spectrum is

stable, Spread Spectrum

On

10

50

ms

One Sigma Clock Period Jitter

Configuration Dependent

50

ps

Maximum Absolute Jitter

Deviation from Mean.

Configuration Dependent

+200

ps

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