ICS291

TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER

EPROM CLOCK SYNTHESIZER

IDT™ / ICS™ TRIPLE PLL FIELD PROG. SPREAD SPECTRUM CLOCK SYNTHESIZER 6

ICS291

REV D 061306

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

VDDO=VDD

0.314

200

MHz

1.8 V<VDDO<2.8 V

0.314

150

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

Output Rise/Fall Time

80% to 20%, high drive,

1.8 V<VDDO<2.8

Note 2

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

0.6

2

ms

PDTS goes high until

stable CLK output,

Spread Spectrum On

47

ms

One Sigma Clock Period Jitter

Configuration Dependent

50

ps

Maximum Absolute Jitter

Deviation from Mean.

Configuration Dependent

+200

ps

Pin-to-Pin Skew

Low Skew Outputs

-250

250

ps

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

Still air

93

° C/W

1 m/s air flow

78

° C/W

3 m/s air flow

65

° C/W

Thermal Resistance Junction to Case

20

° C/W