Spread Spectrum Clock Generator

MDS 7151 E

5

Revision 012306

Integrated Circuit Systems, Inc.

ICS7151

DC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±0.3 V, Ambient Temperature -40 to +85

°C

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V ±0.3 V, Ambient Temperature -40 to +85

° C

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Operating Voltage

VDD

3.0

3.3

3.6

V

Supply Current

IDD

No load, at 3.3 V

10

20

mA

Input High Voltage

XIN, S0, S1, ENS

VDDx0.8

VDD + 0.3

V

Input Low Voltage

XIN, S0, S1, ENS

0.0

VDDx0.20

V

Output High Voltage

2.0

V

Output Low Voltage

0.4

V

Input Capacitance

XIN, S0, S1, ENS

16

pF

Load Capacitance

CKOUT, 8.3 to 66.7

MHz

15

pF

CKOUT, 66.7 to 100

MHz

10

pF

CKOUT, 100 to 133.4

MHz

7pF

Input Pull-up Resistor

ENS

100

240

400

k

Ω

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Crystal Frequency

16.5

33.4

MHz

Input Clock Frequency

16.5

33.4

MHz

Output Frequency

CKOUT, Multiply by 1

(ICS7151-10)

16.5

33.4

MHz

CKOUT, Multiply by 2

(ICS7151-20)

33.3

66.7

MHz

CKOUT, Multiply by 4

(ICS7151-40)

66.6

133.4

MHz

CKOUT, 2-frequency

division (ICS7151-50)

8.3

16.7

MHz

Input Clock Duty Cycle

XIN, 16.5 to 33.4 MHz

40

50

60

%

Output Clock Duty Cycle

CKOUT, 1.5 V

40

60

%

Output Slew Rate

CKOUT, 0.4 to 2.4 V,

CL = 15 pF

0.5

3.0

V/ns